Part A Final Exam - Power Plant Theory
Also check Blog Archive February 20 for more practice Questions.
Questions: 50
1. CH026 Q07 (Points: 2)
WHMIS Material Safety Data Sheets must be provided at the worksite and
available
a. to all persons that are working with the product.
b. to plant managers.
c. to all maintenance and construction personnel.
d. to plant supervisory staff.
e. to new trainees.
Save Answer
2. CH029 Q04 (Points: 2)
Rehabilitation and retraining support programs for injured power engineers
are provided by
a. the Worker's Compensation Board.
b. St. John's Ambulance.
c. the BC Safety Engineering Services Branch.
d. the Hospital Society of BC.
e. the Institute of Power Engineers.
Save Answer
3. CH030 Q03 (Points: 2)
When there is a hazard of chemical splashes, the operator should wear
a. safety goggles with hardened lenses.
b. monogoggles.
c. a hardhat.
d. a respirator.
e. leather gloves with wrist guards.
Save Answer
4. CH038 Q08 (Points: 2)
The most suitable portable fire extinguisher to use on a Class "D" fire is
the
a. aqueous film-forming foam unit.
b. halon unit.
c. dry powder unit.
d. dry chemical unit.
e. carbon dioxide unit.
Save Answer
5. CH051 Q16 (Points: 2)
The boiler shown below
a. is internally fired.
b. is a horizontal return tubular boiler.
c. has four passes.
d. is typically used in large industrial plants.
e. has a large watertube in the middle.
Save Answer
6. CH051 Q12 (Points: 2)
The steam space of a boiler must be large in order to:
a. accomodate a steam separator.
b. keep the steam pressure down.
c. reduce the cooling effect of water.
d. help separate water from steam efficiently.
e. allow for connection of all the steam riser tubes.
Save Answer
7. CH052 Q02 (Points: 2)
A boiler in which the water is contained in a drum and hot gases pass
through tubes inside this drum is called a
a. packaged D-type boiler.
b. firetube boiler.
c. cross-drum straight-tube boiler.
d. watertube boiler.
e. bent tube boiler.
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8. CH052 Q08 (Points: 2)
An internally fired boiler is one in which combustion takes place in a
furnace which is surrounded by water.
a. True
b. False
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9. CH052 Q03 (Points: 2)
A locomotive type boiler is an internally fired boiler.
a. True
b. False
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10. CH053 Q13 (Points: 2)
In the illustration, the figure that represents a "seal welded" firetube
attachment is
a. Figure A.
b. Figure B.
c. Figure C.
d. Figure D.
e. Figure E.
Save Answer
11. CH053 Q15 (Points: 2)
The illustration shows a 4-pass package boiler with a completely
water-cooled rear furnace.
a. True
b. False
Save Answer
12. CH053 Q04 (Points: 2)
A firebox boiler is classified as an externally-fired boiler when it does
NOT incorporate a water leg.
a. True
b. False
Save Answer
13. CH054 Q19 (Points: 2)
High pressure watertubes
a. are elliptical in cross-section.
b. are always smaller than firetubes.
c. can be arranged in various bent configurations.
d. require pumps for circulation.
e. are always straight.
Save Answer
14. CH054 Q08 (Points: 2)
In the illustration, the component designated by the letter "D" is the
a. air heater.
b. economizer.
c. firewall.
d. main burners.
e. primary superheater.
Save Answer
15. CH054 Q12 (Points: 2)
The most economical fuel to burn in a large steam generator is
a. heavy fuel oil.
b. natural gas.
c. pulverized coal.
d. propane.
e. crude oil.
Save Answer
16. CH055 Q10 (Points: 2)
The boiler shown in the illustration below operates
a. only with the electrodes fully submerged.
b. with only the very pure water obtained by demineralization or
distillation.
c. with water of controlled salinity.
d. by raising and lowering the electrodes.
e. normally at low voltages (110 V and less) and low power ratings (3 000
W).
Save Answer
17. CH055 Q11 (Points: 2)
The illustration below shows a/an
a. immersion heater element.
b. electrode of an electric boiler.
c. bundle type heat exchanger.
d. air heater.
e. economizer.
Save Answer
18. CH055 Q04 (Points: 2)
The amount of steam produced by an electrode type boiler depends upon
a. the number of heating elements engaged.
b. the temperature of the steam at the surface of the water.
c. the density of the water.
d. the level of water in the basket.
e. the voltage supplied to the elements.
Save Answer
19. CH056 Q38 (Points: 2)
The watertube boiler wall construction represented in the accompanying
illustration is a
a. fixed tube wall.
b. shadow tube wall.
c. flat stud tube wall.
d. tangent-tube wall.
e. welded fin tube waterwall.
Save Answer
20. CH056 Q13 (Points: 2)
During the fabrication of a boiler drum, welds may be radiographed only if
the manufacturer feels it is necessary.
a. True
b. False
Save Answer
21. CH056 Q31 (Points: 2)
The accompanying illustration represents a
a. manhole cover.
b. head.
c. handhole cover.
d. tubesheet.
e. rupture disk.
Save Answer
22. CH057 Q18 (Points: 2)
The illustration below shows a/an
a. natural draft system.
b. combined draft system.
c. balanced draft system.
d. induced draft system.
e. over and underfire draft system.
Save Answer
23. CH057 Q07 (Points: 2)
Combustion gases are removed from the boiler furnace by the
a. uptake exhauster.
b. pulverizer exhauster.
c. gas extraction fan.
d. flue gas recirculation fan.
e. induced draft fan.
Save Answer
24. CH057 Q21 (Points: 2)
Furnace explosions in the boiler illustrated may be prevented by
a. using a perforated inlet register.
b. manipulating air register or chimney inlet damper during operation.
c. using properly designed safety valves.
d. periodically blowing down by means of the connections provided..
e. None of the above.
Save Answer
25. CH058 Q14 (Points: 2)
A large portion of heat is lost from the boiler as a result of
a. the combustion of sulphur.
b. the presence of nitrogen in the flue gas.
c. turbulence at the burner.
d. excessive heat transfer in the air heater.
e. the presence of oxygen in the air.
Save Answer
26. CH058 Q28 (Points: 2)
The amount of heat produced per unit amount of fuel burned is called the
a. fixed carbon ratio.
b. fuel energy ratio.
c. ignition temperature.
d. heating value.
e. combustion energy.
Save Answer
27. CH058 Q16 (Points: 2)
Air is largely comprised of an inert gas that will not combine with the
combustible elements of a fuel. This gas is
a. carbon.
b. sulphur dioxide.
c. carbon dioxide.
d. oxygen.
e. nitrogen.
Save Answer
28. CH059 Q13 (Points: 2)
NOx emmissions in a fluidized bed furnace are reduced
a. by reducing combustion temperature.
b. by means of calcium sulphate present during combustion.
c. by increasing furnace temperature to prevent formation of such gases.
d. by means of limestone added to the fuel.
e. by injecting water and steam fluidizing the fuel.
Save Answer
29. CH059 Q02 (Points: 2)
Fluidized bed combustion technology is
a. a very new technology.
b. dated from the mid-1920s.
c. dated from the 1950s.
d. dated from the 1960s.
e. dated from the 1970s.
Save Answer
30. CH060 Q23 (Points: 2)
A boiler safety valve does not open at its prescribed popping pressure. The
operator hand-eases the valve with the test lever. Upon raising the boiler
pressure again, the valve still will not open. The operator should
a. continue operating the boiler, but at reduced pressure.
b. assist the valve in opening by prying the spring.
c. immediately remove the boiler from service for repairs.
d. continue to raise the pressure until the valve opens.
e. disregard the problem, as there are two other valves on the boiler to
provide overpressure protection.
Save Answer
31. CH060 Q30 (Points: 2)
The safety valves on a boiler meet code requirements and are set to a
popping pressure of 1380 kPa. What would be the maximum permissible pressure
rise in a boiler, if the boiler was fired at full capacity with the main
steam stop valve closed?
a. 41 kPa
b. 82.8 kPa
c. 100 kPa
d. 138 kPa
e. 1380 kPa
Save Answer
32. CH060 Q21 (Points: 2)
The lifting lever is used to determine that the safety valve
a. is closed tightly after popping.
b. will open at the specified set pressure.
c. will close with the specified amount of blowdown.
d. will open, release steam and close.
e. will remain open after it has popped.
Save Answer
33. CH061 Q22 (Points: 2)
The advantages of mounting a gauge glass on a water column instead of
directly to the boiler include (select all that apply):
a. The installation cost by means of a water column is cheaper.
b. The column traps any sludge or sediment and prevents it from collecting
in the glass
c. The column cools the water and ensures this way greater accuracy of
measurement.
d. The water column acts as a reservoir to dampen agitation in the water.
e. The column provides a place for installation of high and low level alarms
and controls.
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34. CH061 Q19 (Points: 2)
During normal boiler operation the gage glass generally indicates water
level
a. identical to the actual level in the boiler drum.
b. lower than the actual level in the boiler drum.
c. higher if the boiler pressure is greater than the feedwater pressure
d. higher than the actual level in the boiler drum.
e. +/- 10% from the actual water level in the boiler drum.
Save Answer
35. CH061 Q02 (Points: 2)
The ASME Code states that when the water level is at the lowest visible
level in the gauge glass there shall be a minimum of water over the top row
of tubes or the crown sheet in a firetube boiler. According to Code, this
minimum level is
a. 15 mm.
b. 25.4 mm.
c. 51 mm.
d. 76 mm.
e. 101.3 mm.
Save Answer
36. CH062 Q01 (Points: 2)
Impurities must be removed from steam leaving the boiler because
a. deposits will form on the turbine blades.
b. they cause higher steam temperatures in the superheater.
c. they will increase pH of the condensate.
d. they deposit on the economizer tubes.
e. they get stuck in the non-return valve.
Save Answer
37. CH062 Q04 (Points: 2)
In the illustration of a simple watertube boiler circuit, the downcomers are
indicated by the letter
a. A.
b. B.
c. C.
d. D.
e. E.
Save Answer
38. CH062 Q17 (Points: 2)
At lower pressures, steam
a. cannot be separated from water with mechanical devices.
b. is separated from water by means of a perforated internal feed pipe.
c. has higher densities.
d. is more difficult to separate from the water.
e. readily rises and separates from the water.
Save Answer
39. CH063 Q10 (Points: 2)
Soot and ash are undesirable on tube surfaces because they
a. reduce draft fan power requirements.
b. increase heat transfer through heating surfaces.
c. reduce the heating surface of the boiler.
d. cause overheating of the tubes.
e. reduce boiler efficiency.
Save Answer
40. CH063 Q05 (Points: 2)
The two cleaning mediums used by boiler soot blowers are
a. saturated steam and high pressure feedwater.
b. superheated steam and water.
c. recirculated flue gas and compressed air.
d. recirculated flue gas and high pressure steam.
e. steam and compressed air.
Save Answer
41. CH063 Q07 (Points: 2)
Shot cleaning is a method which is sometimes used to remove soot and ash
deposits from tubes in the
1. furnace.
2. economizer.
3. air heater.
4. superheater.
a. 1 and 2 only.
b. 2 and 3 only.
c. 1, 2 and 3 only.
d. 3 and 4 only.
e. 2, 3 and 4 only.
Save Answer
42. CH064 Q11 (Points: 2)
A typical arrangement of valves on a high-pressure boiler blow-off line is
a. one valve only, of the globe valve design.
b. a check valve nearest to the boiler followed by a slow-opening valve.
c. two quick opening valves in tandem.
d. a quick opening valve closest to the boiler followed by a slow opening
valve.
e. a slow opening valve closest to the boiler followed by a quick-opening
valve.
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43. CH064 Q07 (Points: 2)
The inlet line from the boiler into the blowoff tank should be
1. sloped toward the blowoff tank.
2. beneath the water level in the blowoff tank.
3. above the water level in the blowoff tank.
4. sloped away from the blowoff tank.
a. 1 and 2 only.
b. 1 and 3 only.
c. 2 and 4 only.
d. 3 and 4 only.
Save Answer
44. CH064 Q06 (Points: 2)
The intermittent blow off connection is typically located at
a. the top of the tubesheet in a firetube boiler.
b. the top of the mud drum in a watertube boiler.
c. the bottom of the mud drum in a watertube boiler.
d. the bottom off the steam drum in a water tube boiler.
e. the water-line in both fire and water tube boilers.
Save Answer
45. CH065 Q16 (Points: 2)
The drain on the non-return valve is actually connected
a. internally to the upstream valve flange.
b. internally to the spindle packing gland.
c. internally to the downstream side of the valve plug.
d. externally to the downstream valve flange.
e. internally to the upstream side of the valve plug.
Save Answer
46. CH065 Q02 (Points: 2)
During start up of a boiler, the vent on the steam drum is
a. left open until the pressure is at least 100 PSI.
b. continously adjusted to maintain a steady air cushion pressure inside the
drum.
c. opened to prevent a vacuum from forming.
d. opened to allow the escape of non-condensible gases.
e. kept closed to prevent air infiltration.
Save Answer
47. CH065 Q14 (Points: 2)
The piping between the boiler non-return valve and the steam header valve is
called the
a. boiler mains.
b. boiler steam main.
c. boiler steam header.
d. steam main.
e. boiler steam line.
Save Answer
48. CH066 Q11 (Points: 2)
In the event of an excessively high boiler water level, the safest action to
take is to
a. shut off the feedwater pump.
b. close the feedwater valve to the boiler.
c. trip the fuel to the burners.
d. open the intermittent blow-off valves.
e. reduce the load by closing the boiler stop valve.
Save Answer
49. CH066 Q17 (Points: 2)
The water level in a boiler continues to drop even though the operator has
increased the water supply. What should the operator do next?
a. Shut off the burners before the water level reaches the bottom of the
gauge glass.
b. Lower the firing rate of the boiler in order that the tubes will not be
over-heated if the level goes too low.
c. Close in on the boiler stop valve to reduce the load.
d. Use hoses to hook up an auxiliary source of water.
e. Call the chief engineer for advice.
Save Answer
50. CH066 Q04 (Points: 2)
If smoking of an oil-fired boiler occurs, the problem may result from
a. the stack being too short to disperse the smoke.
b. the stack temperature being too high.
c. the fuel oil/air ratio being incorrect.
d. the fuel oil temperature being too high.
e. the furnace temperature being too high.
Save Answer
Pulp and Paper Quiz Test.
You Should be able to review the test also with your Books.
Assessment: Exam 1 - Pulp & Paper - Level 2 (2007)
Attempt: 1 (Credit)
User:
Time remaining: 35 minutes
Question 1 Value: 1 Path:
The main reason that low liquor solids concentration of heavy black liquor
must be avoided is that it can result in...
A)low boiler efficiency
B) carryover of liquor chemical into the superheater
C) low steam production
D) smelt water reactions
Question 2 Value: 1 Path:
When smelt from the recovery boiler is dissolved in weak wash at the
dissolving tank the product is ________ liquor.
A)white
B) weak
C) green
D) strong black
Question 3 Value: 1 Path:
Green liquor is pumped from the dissolving tank to the recaust where
suspended solids are removed from the liquor using a filter or green liquor
A)centrifuge
B) strainer
C) clarifier
Question 4 Value: 1 Path:
The smelt spouts on a recovery boiler are water cooled to keep the smelt
from burning through the steel.
A)True
B)False
Question 5 Value: 1 Path:
In any chemical pulping process the wood chips are broken down into fiber in
the:
A)digesters
B) brown stock washers
C) bleach plant
D) recovery plant
Question 6 Value: 1 Path:
The non-condensable gases vented from the black liquor in the evaporators
are drawn off the surface condenser and sent to the power boiler or lime
kiln by:
A)a condensate pump
B) an ejector system
C) a vacuum pump
D) the circulating pump
Question 7 Value: 1 Path:
Liquor chemicals melt in the recovery boiler furnace and run out the bottom.
This molten chemical is called:
A)smelt
B) char
C) liquor
D) hog
Question 8 Value: 1 Path:
After the recausticizing reaction is completed, lime mud is removed from the
white liquor by steeling and filtration. This lime mud is then washed,
filtered and sent to the:
A)digesters
B) recovery boiler
C) hot lime silo
D) lime kiln
Question 9 Value: 1 Path:
The (2) two active chemicals in the liquor added to the digester in a kraft
pulping process are:
(Ensure that you select (2) two answers)
A)sodium carbonate
B) sodium hydroxide
C) sodium sulfite
D) calcium carbonate
E) calcium oxide
F) sodium sulfide
Question 10 Value: 1 Path:
Fly Ash chemical removed from the flue gases in the recovery boiler
precipitator are:
A)blown back into the furnace
B) discarded to landfillC) discharged up the stack
D) mixed into the black liquor
Question 11 Value: 1 Path:
The purpose of the auxiliary burners in a recovery boiler is mostly to heat
the boiler up on startup and burn the bed down when shutting down the unit.
A)True B)False
Question 12 Value: 1 Path:
In the furnace of a recovery boiler a reducing atmosphere is maintained that
converts sodium sulfate to:
A)Sulfite B) sulfide C) carbonate D) hydroxide
Question 13 Value: 1 Path:
The steam which flashes off the liquor at the digester blow tank cannot be
vented to atmosphere because it:
A)Contains toxic non-condensable gases
B) is below atmospheric pressure
C) is too hot
D) condenses in the blow tank
Chemical that is carried with the vent steam from the smelt dissolving tank
is:
A)removed using a scrubber and returned to the dissolving tank
B) lost to the atmosphere
C) removed by the electrostatic preciptator
D) mixed into the black liquor
Question 15 Value: 1 Path:
In the lime kiln, calcium carbonate is heated and converted to calcium oxide
by driving off:
A)sodium carbonate B) sodium sulfide C) oxygen D) carbon dioxide
Part: 1
Module & Component Your Score Your Answer Correct Answer(s) Feedback
OPS & SYS - Pulp & Paper - Level 2 (2007) 1 DuKnJs7B 1
Question 16 Value: 1 Path:
In a modern kraft papermill the black liquor from the multiple effect
evaporators is further concentrated before burning by... (MUST select (2)
two correct answers)
A)evaporation in the concentrator
B) evaporation in the cyclone evaporator
C) dissolving saltcake that is removed from the flue gases
D) passing the liquor through a pressure strainer
E) evaporation in the cascade evaporators
Question 17 Value: 1 Path:
If a tube leak is suspected in the furnace of a recover boiler, an emergency
shutdown procedure is initiated which shuts down the boiler and...
A)drains out the water
B) opens the safety valves
C) stops the leak
D) drains the heavy black liquor tank
Question 18 Value: 1 Path:
After filtering the lime mud out, the white liquor is sent to storage before
being used in the:
A) digesters
B) recovery boiler
C) hot lime silo
D) lime kiln
Question 19 Value: 1 Path:
Wood is made up largely of fibers that can be used for the manufacture of
paper and other products. This fiber is called:
A)Lignin
B) Hemi-cellulose
C) Cellulose
D) Black Liquor
Question 20 Value: 1 Path:
Pulp fiber that is produced in a purely mechanical pulping process is called
_________ pulp.
A) sulphite
B) sulfate
C) kraft
D) groundwood
Question 21 Value: 1 Path:
The product from the lime kiln is:
A) used for producing calcium hydroxide in the slaker
B) sold for road building
C) used to make gypsum wall board
D) disposed of in a landfill
Question 22 Value: 1 Path:
All of the pulp produced in Canadian pulp mills is used for making paper.
True False
Question 23 Value: 1 Path:
In a black liquor recovery boiler primary air is introduced:
A) at the bottom of the furnace
B) just below the liquor guns
C) just above the liquor guns
D) below the grates
Question 24 Value: 1 Path:
Weak black liquor has a solids concentration in the range of:
A) 15%
B) 25%
C) 50%
D) 60% or more
Question 25 Value: 1 Path:
The compound which is formed by the slaking reaction, reacts with sodium
carbonate in the green liquor producing:
A) calcium hydroxide
B) calcium oxide
C) sodium hydroxide
D) sodium sulfide
Question 26 Value: 1 Path:
Most of the steam used in the pulp mill digesters is condensed and returned
to the power house to be re-used in the boilers. A)True B)False
Question 27 Value: 1 Path:
The Refractometers measure liquor solids to the recovery boiler burners. If
the solids concentration is too low, the liquor is automatically shut off
and returned to the storage tank by the ______ valves
A) rapid drain
B) diversion
C) nozzle
D) inlet
Question 28 Value: 1 Path:
The vacuum in the last effects of a multiple effect evaporator is produced
by the surface condenser. To maintain this vacuum, non-condensable gases are
removed from the condenser by:
A) venting to atmosphere
B) an ejector system
C) a vacuum pump
D) the circulating pump
Question 29 Value: 1 Path:
The most common method of producing chemical pulp in Canada is the _____
process.
A) Sulfite
B) soda
C) kraft
D) cheddar
Question 30 Value: 1 Path:
The "glue" that holds the wood fibers together is made up of an organic
material which is partially dissolved in a paper mill digester. This glue is
called:
A) cellulose
B) binder
C) lignin
D) glucose
Question 31 Value: 1 Path:
The solid waste that is removed from the lime/liquor mixture at the slaker
is called:
A) dregs
B) grits
C) lime mud
D) lime rock
Question 32 Value: 1 Path:
The organic matter and carbon in black liquor burns mostly in a pile on the
floor of the furnace. This is called the:
A) smelt
B) char bed
C) liquor bed
D) hog bed
Question 33 Value: 1 Path:
In a chemical pulping process the pulp fiber is separated from black liquor
at the:
A) digesters
B) brown stock washers
C) bleach plant
D) recovery plant
Question 34 Value: 1 Path:
When the hot lime is added to green liquor, it reacts with water in the
green liquor to form:
A) calcium hydroxide
B) calcium oxide
C) sodium hydroxide
D) sodium sulfide
Question 35 Value: 1 Path:
The liquor solids concentration after the multiple effect evaporators is
typically about
A) 12%
B) 25%
C) 50%
D) 60% or more
Question 36 Value: 1 Path:
When white paper is being made at a paper mill the brown pulp is converted
to white fiber at the:
A) digesters
B) brown stock
bleach plant
D) recovery plant
Question 37 Value: 1 Path:
Modern chemical recovery boilers do not use direct contact evaporators.
A) True
B) False
Question 38 Value: 1 Path:
Each of the effects in a multiple effect evaporator is at a lower pressure.
This is necessary to ensure that:
A) the liquor flows from one effect to the next
B) steam from the previous
effect is hot enough to boil the liquor
C) the steam will flow from one
effect to the next
D) the non-condensable gases are removed efficiently
Question 39 Value: 1 Path:
At the slaker, and in the causticizers, green liquor is converted to white
liquor by the addition of:
A) calcium hydroxide
B) calcium oxide
C) sodium hydroxide
D) sodium sulfide
Question 40 Value: 1 Path:
The lime kiln uses an auxiliary fuel fired burner to heat the time mud to
dry it and reduce the calcium carbonate. A)True B) False
Question 41 Value: 1 Path:
Liquor that is burned in the recovery boiler is called heavy black liquor
and has a solids concentration of:
A) 12%
B) 25%
C) 50%
D) 60% or more
Question 42 Value: 1 Path:
The liquor in the first effect of a multiple effect evaporator system is
heated and boiled using:
A) Live steam
B) natural gas or oil
C) electricity
D) vapor from the previous effect
Question 43 Value: 1 Path:
When water comes into contact with molten smelt an explosion can result that
is called a:
A) boiler explosion
B) furnace explosion
C) smelt water reaction
D) furnace puff
Question 44 Value: 1 Path:
The liquor in each effect of a multiple effect evaporator except the first
effect heated using:
A) live steam
B) natural gas or oil
C) electricity
D) vapor from the previous effect
Question 45 Value: 1 Path:
The solid contaminants removed from green liquor and discarded are called:
A) dregs
B) grits
C) lime mud
D) lime rock
Question 46 Value: 1 Path:
Non-condensable gases, which are released from the black liquor in the
evaporators, is drawn off and usually burned in the lime kiln.
A) True B) False
Question 47 Value: 1 Path:
The first step in recovering the chemicals from black liquor is evaporation.
The process begins in the:
A) direct contact evaporators
B) cascade evaporator
C) multiple effect evaporator
D) concentrator
Question 48 Value: 1 Path:
A steam jet is used to break up the flow from the recovery boiler smelt
spouts. This is called the:
A) shatter spray
B) liquor nozzle
C) hood shower
D) smelt deflector
Question 49 Value: 1 Path:
The water which is used to wash the lime mud in the mud washer is:
A) fresh water
B) clean condense
C) contaminated condensate from the evaporators
D) green liquor
Question 50 Value: 1 Path:
The chemical in black liquor that is not converted in the recovery boiler
furnace is:
A) sodium hydroxide
B) sodium carbonate
C) calcium carbonate
D) calcium hydroxide
E) sodium sulfate
You should be able to review your notes and match these questions for you best understanding.
Materials prepared for self test. Good Luck!
Also check Blog Archive February 20 for more practice Questions.
Questions: 50
1. CH026 Q07 (Points: 2)
WHMIS Material Safety Data Sheets must be provided at the worksite and
available
a. to all persons that are working with the product.
b. to plant managers.
c. to all maintenance and construction personnel.
d. to plant supervisory staff.
e. to new trainees.
Save Answer
2. CH029 Q04 (Points: 2)
Rehabilitation and retraining support programs for injured power engineers
are provided by
a. the Worker's Compensation Board.
b. St. John's Ambulance.
c. the BC Safety Engineering Services Branch.
d. the Hospital Society of BC.
e. the Institute of Power Engineers.
Save Answer
3. CH030 Q03 (Points: 2)
When there is a hazard of chemical splashes, the operator should wear
a. safety goggles with hardened lenses.
b. monogoggles.
c. a hardhat.
d. a respirator.
e. leather gloves with wrist guards.
Save Answer
4. CH038 Q08 (Points: 2)
The most suitable portable fire extinguisher to use on a Class "D" fire is
the
a. aqueous film-forming foam unit.
b. halon unit.
c. dry powder unit.
d. dry chemical unit.
e. carbon dioxide unit.
Save Answer
5. CH051 Q16 (Points: 2)
The boiler shown below
a. is internally fired.
b. is a horizontal return tubular boiler.
c. has four passes.
d. is typically used in large industrial plants.
e. has a large watertube in the middle.
Save Answer
6. CH051 Q12 (Points: 2)
The steam space of a boiler must be large in order to:
a. accomodate a steam separator.
b. keep the steam pressure down.
c. reduce the cooling effect of water.
d. help separate water from steam efficiently.
e. allow for connection of all the steam riser tubes.
Save Answer
7. CH052 Q02 (Points: 2)
A boiler in which the water is contained in a drum and hot gases pass
through tubes inside this drum is called a
a. packaged D-type boiler.
b. firetube boiler.
c. cross-drum straight-tube boiler.
d. watertube boiler.
e. bent tube boiler.
Save Answer
8. CH052 Q08 (Points: 2)
An internally fired boiler is one in which combustion takes place in a
furnace which is surrounded by water.
a. True
b. False
Save Answer
9. CH052 Q03 (Points: 2)
A locomotive type boiler is an internally fired boiler.
a. True
b. False
Save Answer
10. CH053 Q13 (Points: 2)
In the illustration, the figure that represents a "seal welded" firetube
attachment is
a. Figure A.
b. Figure B.
c. Figure C.
d. Figure D.
e. Figure E.
Save Answer
11. CH053 Q15 (Points: 2)
The illustration shows a 4-pass package boiler with a completely
water-cooled rear furnace.
a. True
b. False
Save Answer
12. CH053 Q04 (Points: 2)
A firebox boiler is classified as an externally-fired boiler when it does
NOT incorporate a water leg.
a. True
b. False
Save Answer
13. CH054 Q19 (Points: 2)
High pressure watertubes
a. are elliptical in cross-section.
b. are always smaller than firetubes.
c. can be arranged in various bent configurations.
d. require pumps for circulation.
e. are always straight.
Save Answer
14. CH054 Q08 (Points: 2)
In the illustration, the component designated by the letter "D" is the
a. air heater.
b. economizer.
c. firewall.
d. main burners.
e. primary superheater.
Save Answer
15. CH054 Q12 (Points: 2)
The most economical fuel to burn in a large steam generator is
a. heavy fuel oil.
b. natural gas.
c. pulverized coal.
d. propane.
e. crude oil.
Save Answer
16. CH055 Q10 (Points: 2)
The boiler shown in the illustration below operates
a. only with the electrodes fully submerged.
b. with only the very pure water obtained by demineralization or
distillation.
c. with water of controlled salinity.
d. by raising and lowering the electrodes.
e. normally at low voltages (110 V and less) and low power ratings (3 000
W).
Save Answer
17. CH055 Q11 (Points: 2)
The illustration below shows a/an
a. immersion heater element.
b. electrode of an electric boiler.
c. bundle type heat exchanger.
d. air heater.
e. economizer.
Save Answer
18. CH055 Q04 (Points: 2)
The amount of steam produced by an electrode type boiler depends upon
a. the number of heating elements engaged.
b. the temperature of the steam at the surface of the water.
c. the density of the water.
d. the level of water in the basket.
e. the voltage supplied to the elements.
Save Answer
19. CH056 Q38 (Points: 2)
The watertube boiler wall construction represented in the accompanying
illustration is a
a. fixed tube wall.
b. shadow tube wall.
c. flat stud tube wall.
d. tangent-tube wall.
e. welded fin tube waterwall.
Save Answer
20. CH056 Q13 (Points: 2)
During the fabrication of a boiler drum, welds may be radiographed only if
the manufacturer feels it is necessary.
a. True
b. False
Save Answer
21. CH056 Q31 (Points: 2)
The accompanying illustration represents a
a. manhole cover.
b. head.
c. handhole cover.
d. tubesheet.
e. rupture disk.
Save Answer
22. CH057 Q18 (Points: 2)
The illustration below shows a/an
a. natural draft system.
b. combined draft system.
c. balanced draft system.
d. induced draft system.
e. over and underfire draft system.
Save Answer
23. CH057 Q07 (Points: 2)
Combustion gases are removed from the boiler furnace by the
a. uptake exhauster.
b. pulverizer exhauster.
c. gas extraction fan.
d. flue gas recirculation fan.
e. induced draft fan.
Save Answer
24. CH057 Q21 (Points: 2)
Furnace explosions in the boiler illustrated may be prevented by
a. using a perforated inlet register.
b. manipulating air register or chimney inlet damper during operation.
c. using properly designed safety valves.
d. periodically blowing down by means of the connections provided..
e. None of the above.
Save Answer
25. CH058 Q14 (Points: 2)
A large portion of heat is lost from the boiler as a result of
a. the combustion of sulphur.
b. the presence of nitrogen in the flue gas.
c. turbulence at the burner.
d. excessive heat transfer in the air heater.
e. the presence of oxygen in the air.
Save Answer
26. CH058 Q28 (Points: 2)
The amount of heat produced per unit amount of fuel burned is called the
a. fixed carbon ratio.
b. fuel energy ratio.
c. ignition temperature.
d. heating value.
e. combustion energy.
Save Answer
27. CH058 Q16 (Points: 2)
Air is largely comprised of an inert gas that will not combine with the
combustible elements of a fuel. This gas is
a. carbon.
b. sulphur dioxide.
c. carbon dioxide.
d. oxygen.
e. nitrogen.
Save Answer
28. CH059 Q13 (Points: 2)
NOx emmissions in a fluidized bed furnace are reduced
a. by reducing combustion temperature.
b. by means of calcium sulphate present during combustion.
c. by increasing furnace temperature to prevent formation of such gases.
d. by means of limestone added to the fuel.
e. by injecting water and steam fluidizing the fuel.
Save Answer
29. CH059 Q02 (Points: 2)
Fluidized bed combustion technology is
a. a very new technology.
b. dated from the mid-1920s.
c. dated from the 1950s.
d. dated from the 1960s.
e. dated from the 1970s.
Save Answer
30. CH060 Q23 (Points: 2)
A boiler safety valve does not open at its prescribed popping pressure. The
operator hand-eases the valve with the test lever. Upon raising the boiler
pressure again, the valve still will not open. The operator should
a. continue operating the boiler, but at reduced pressure.
b. assist the valve in opening by prying the spring.
c. immediately remove the boiler from service for repairs.
d. continue to raise the pressure until the valve opens.
e. disregard the problem, as there are two other valves on the boiler to
provide overpressure protection.
Save Answer
31. CH060 Q30 (Points: 2)
The safety valves on a boiler meet code requirements and are set to a
popping pressure of 1380 kPa. What would be the maximum permissible pressure
rise in a boiler, if the boiler was fired at full capacity with the main
steam stop valve closed?
a. 41 kPa
b. 82.8 kPa
c. 100 kPa
d. 138 kPa
e. 1380 kPa
Save Answer
32. CH060 Q21 (Points: 2)
The lifting lever is used to determine that the safety valve
a. is closed tightly after popping.
b. will open at the specified set pressure.
c. will close with the specified amount of blowdown.
d. will open, release steam and close.
e. will remain open after it has popped.
Save Answer
33. CH061 Q22 (Points: 2)
The advantages of mounting a gauge glass on a water column instead of
directly to the boiler include (select all that apply):
a. The installation cost by means of a water column is cheaper.
b. The column traps any sludge or sediment and prevents it from collecting
in the glass
c. The column cools the water and ensures this way greater accuracy of
measurement.
d. The water column acts as a reservoir to dampen agitation in the water.
e. The column provides a place for installation of high and low level alarms
and controls.
Save Answer
34. CH061 Q19 (Points: 2)
During normal boiler operation the gage glass generally indicates water
level
a. identical to the actual level in the boiler drum.
b. lower than the actual level in the boiler drum.
c. higher if the boiler pressure is greater than the feedwater pressure
d. higher than the actual level in the boiler drum.
e. +/- 10% from the actual water level in the boiler drum.
Save Answer
35. CH061 Q02 (Points: 2)
The ASME Code states that when the water level is at the lowest visible
level in the gauge glass there shall be a minimum of water over the top row
of tubes or the crown sheet in a firetube boiler. According to Code, this
minimum level is
a. 15 mm.
b. 25.4 mm.
c. 51 mm.
d. 76 mm.
e. 101.3 mm.
Save Answer
36. CH062 Q01 (Points: 2)
Impurities must be removed from steam leaving the boiler because
a. deposits will form on the turbine blades.
b. they cause higher steam temperatures in the superheater.
c. they will increase pH of the condensate.
d. they deposit on the economizer tubes.
e. they get stuck in the non-return valve.
Save Answer
37. CH062 Q04 (Points: 2)
In the illustration of a simple watertube boiler circuit, the downcomers are
indicated by the letter
a. A.
b. B.
c. C.
d. D.
e. E.
Save Answer
38. CH062 Q17 (Points: 2)
At lower pressures, steam
a. cannot be separated from water with mechanical devices.
b. is separated from water by means of a perforated internal feed pipe.
c. has higher densities.
d. is more difficult to separate from the water.
e. readily rises and separates from the water.
Save Answer
39. CH063 Q10 (Points: 2)
Soot and ash are undesirable on tube surfaces because they
a. reduce draft fan power requirements.
b. increase heat transfer through heating surfaces.
c. reduce the heating surface of the boiler.
d. cause overheating of the tubes.
e. reduce boiler efficiency.
Save Answer
40. CH063 Q05 (Points: 2)
The two cleaning mediums used by boiler soot blowers are
a. saturated steam and high pressure feedwater.
b. superheated steam and water.
c. recirculated flue gas and compressed air.
d. recirculated flue gas and high pressure steam.
e. steam and compressed air.
Save Answer
41. CH063 Q07 (Points: 2)
Shot cleaning is a method which is sometimes used to remove soot and ash
deposits from tubes in the
1. furnace.
2. economizer.
3. air heater.
4. superheater.
a. 1 and 2 only.
b. 2 and 3 only.
c. 1, 2 and 3 only.
d. 3 and 4 only.
e. 2, 3 and 4 only.
Save Answer
42. CH064 Q11 (Points: 2)
A typical arrangement of valves on a high-pressure boiler blow-off line is
a. one valve only, of the globe valve design.
b. a check valve nearest to the boiler followed by a slow-opening valve.
c. two quick opening valves in tandem.
d. a quick opening valve closest to the boiler followed by a slow opening
valve.
e. a slow opening valve closest to the boiler followed by a quick-opening
valve.
Save Answer
43. CH064 Q07 (Points: 2)
The inlet line from the boiler into the blowoff tank should be
1. sloped toward the blowoff tank.
2. beneath the water level in the blowoff tank.
3. above the water level in the blowoff tank.
4. sloped away from the blowoff tank.
a. 1 and 2 only.
b. 1 and 3 only.
c. 2 and 4 only.
d. 3 and 4 only.
Save Answer
44. CH064 Q06 (Points: 2)
The intermittent blow off connection is typically located at
a. the top of the tubesheet in a firetube boiler.
b. the top of the mud drum in a watertube boiler.
c. the bottom of the mud drum in a watertube boiler.
d. the bottom off the steam drum in a water tube boiler.
e. the water-line in both fire and water tube boilers.
Save Answer
45. CH065 Q16 (Points: 2)
The drain on the non-return valve is actually connected
a. internally to the upstream valve flange.
b. internally to the spindle packing gland.
c. internally to the downstream side of the valve plug.
d. externally to the downstream valve flange.
e. internally to the upstream side of the valve plug.
Save Answer
46. CH065 Q02 (Points: 2)
During start up of a boiler, the vent on the steam drum is
a. left open until the pressure is at least 100 PSI.
b. continously adjusted to maintain a steady air cushion pressure inside the
drum.
c. opened to prevent a vacuum from forming.
d. opened to allow the escape of non-condensible gases.
e. kept closed to prevent air infiltration.
Save Answer
47. CH065 Q14 (Points: 2)
The piping between the boiler non-return valve and the steam header valve is
called the
a. boiler mains.
b. boiler steam main.
c. boiler steam header.
d. steam main.
e. boiler steam line.
Save Answer
48. CH066 Q11 (Points: 2)
In the event of an excessively high boiler water level, the safest action to
take is to
a. shut off the feedwater pump.
b. close the feedwater valve to the boiler.
c. trip the fuel to the burners.
d. open the intermittent blow-off valves.
e. reduce the load by closing the boiler stop valve.
Save Answer
49. CH066 Q17 (Points: 2)
The water level in a boiler continues to drop even though the operator has
increased the water supply. What should the operator do next?
a. Shut off the burners before the water level reaches the bottom of the
gauge glass.
b. Lower the firing rate of the boiler in order that the tubes will not be
over-heated if the level goes too low.
c. Close in on the boiler stop valve to reduce the load.
d. Use hoses to hook up an auxiliary source of water.
e. Call the chief engineer for advice.
Save Answer
50. CH066 Q04 (Points: 2)
If smoking of an oil-fired boiler occurs, the problem may result from
a. the stack being too short to disperse the smoke.
b. the stack temperature being too high.
c. the fuel oil/air ratio being incorrect.
d. the fuel oil temperature being too high.
e. the furnace temperature being too high.
Save Answer
Pulp and Paper Quiz Test.
You Should be able to review the test also with your Books.
Assessment: Exam 1 - Pulp & Paper - Level 2 (2007)
Attempt: 1 (Credit)
User:
Time remaining: 35 minutes
Question 1 Value: 1 Path:
The main reason that low liquor solids concentration of heavy black liquor
must be avoided is that it can result in...
A)low boiler efficiency
B) carryover of liquor chemical into the superheater
C) low steam production
D) smelt water reactions
Question 2 Value: 1 Path:
When smelt from the recovery boiler is dissolved in weak wash at the
dissolving tank the product is ________ liquor.
A)white
B) weak
C) green
D) strong black
Question 3 Value: 1 Path:
Green liquor is pumped from the dissolving tank to the recaust where
suspended solids are removed from the liquor using a filter or green liquor
A)centrifuge
B) strainer
C) clarifier
Question 4 Value: 1 Path:
The smelt spouts on a recovery boiler are water cooled to keep the smelt
from burning through the steel.
A)True
B)False
Question 5 Value: 1 Path:
In any chemical pulping process the wood chips are broken down into fiber in
the:
A)digesters
B) brown stock washers
C) bleach plant
D) recovery plant
Question 6 Value: 1 Path:
The non-condensable gases vented from the black liquor in the evaporators
are drawn off the surface condenser and sent to the power boiler or lime
kiln by:
A)a condensate pump
B) an ejector system
C) a vacuum pump
D) the circulating pump
Question 7 Value: 1 Path:
Liquor chemicals melt in the recovery boiler furnace and run out the bottom.
This molten chemical is called:
A)smelt
B) char
C) liquor
D) hog
Question 8 Value: 1 Path:
After the recausticizing reaction is completed, lime mud is removed from the
white liquor by steeling and filtration. This lime mud is then washed,
filtered and sent to the:
A)digesters
B) recovery boiler
C) hot lime silo
D) lime kiln
Question 9 Value: 1 Path:
The (2) two active chemicals in the liquor added to the digester in a kraft
pulping process are:
(Ensure that you select (2) two answers)
A)sodium carbonate
B) sodium hydroxide
C) sodium sulfite
D) calcium carbonate
E) calcium oxide
F) sodium sulfide
Question 10 Value: 1 Path:
Fly Ash chemical removed from the flue gases in the recovery boiler
precipitator are:
A)blown back into the furnace
B) discarded to landfillC) discharged up the stack
D) mixed into the black liquor
Question 11 Value: 1 Path:
The purpose of the auxiliary burners in a recovery boiler is mostly to heat
the boiler up on startup and burn the bed down when shutting down the unit.
A)True B)False
Question 12 Value: 1 Path:
In the furnace of a recovery boiler a reducing atmosphere is maintained that
converts sodium sulfate to:
A)Sulfite B) sulfide C) carbonate D) hydroxide
Question 13 Value: 1 Path:
The steam which flashes off the liquor at the digester blow tank cannot be
vented to atmosphere because it:
A)Contains toxic non-condensable gases
B) is below atmospheric pressure
C) is too hot
D) condenses in the blow tank
Chemical that is carried with the vent steam from the smelt dissolving tank
is:
A)removed using a scrubber and returned to the dissolving tank
B) lost to the atmosphere
C) removed by the electrostatic preciptator
D) mixed into the black liquor
Question 15 Value: 1 Path:
In the lime kiln, calcium carbonate is heated and converted to calcium oxide
by driving off:
A)sodium carbonate B) sodium sulfide C) oxygen D) carbon dioxide
Part: 1
Module & Component Your Score Your Answer Correct Answer(s) Feedback
OPS & SYS - Pulp & Paper - Level 2 (2007) 1 DuKnJs7B 1
Question 16 Value: 1 Path:
In a modern kraft papermill the black liquor from the multiple effect
evaporators is further concentrated before burning by... (MUST select (2)
two correct answers)
A)evaporation in the concentrator
B) evaporation in the cyclone evaporator
C) dissolving saltcake that is removed from the flue gases
D) passing the liquor through a pressure strainer
E) evaporation in the cascade evaporators
Question 17 Value: 1 Path:
If a tube leak is suspected in the furnace of a recover boiler, an emergency
shutdown procedure is initiated which shuts down the boiler and...
A)drains out the water
B) opens the safety valves
C) stops the leak
D) drains the heavy black liquor tank
Question 18 Value: 1 Path:
After filtering the lime mud out, the white liquor is sent to storage before
being used in the:
A) digesters
B) recovery boiler
C) hot lime silo
D) lime kiln
Question 19 Value: 1 Path:
Wood is made up largely of fibers that can be used for the manufacture of
paper and other products. This fiber is called:
A)Lignin
B) Hemi-cellulose
C) Cellulose
D) Black Liquor
Question 20 Value: 1 Path:
Pulp fiber that is produced in a purely mechanical pulping process is called
_________ pulp.
A) sulphite
B) sulfate
C) kraft
D) groundwood
Question 21 Value: 1 Path:
The product from the lime kiln is:
A) used for producing calcium hydroxide in the slaker
B) sold for road building
C) used to make gypsum wall board
D) disposed of in a landfill
Question 22 Value: 1 Path:
All of the pulp produced in Canadian pulp mills is used for making paper.
True False
Question 23 Value: 1 Path:
In a black liquor recovery boiler primary air is introduced:
A) at the bottom of the furnace
B) just below the liquor guns
C) just above the liquor guns
D) below the grates
Question 24 Value: 1 Path:
Weak black liquor has a solids concentration in the range of:
A) 15%
B) 25%
C) 50%
D) 60% or more
Question 25 Value: 1 Path:
The compound which is formed by the slaking reaction, reacts with sodium
carbonate in the green liquor producing:
A) calcium hydroxide
B) calcium oxide
C) sodium hydroxide
D) sodium sulfide
Question 26 Value: 1 Path:
Most of the steam used in the pulp mill digesters is condensed and returned
to the power house to be re-used in the boilers. A)True B)False
Question 27 Value: 1 Path:
The Refractometers measure liquor solids to the recovery boiler burners. If
the solids concentration is too low, the liquor is automatically shut off
and returned to the storage tank by the ______ valves
A) rapid drain
B) diversion
C) nozzle
D) inlet
Question 28 Value: 1 Path:
The vacuum in the last effects of a multiple effect evaporator is produced
by the surface condenser. To maintain this vacuum, non-condensable gases are
removed from the condenser by:
A) venting to atmosphere
B) an ejector system
C) a vacuum pump
D) the circulating pump
Question 29 Value: 1 Path:
The most common method of producing chemical pulp in Canada is the _____
process.
A) Sulfite
B) soda
C) kraft
D) cheddar
Question 30 Value: 1 Path:
The "glue" that holds the wood fibers together is made up of an organic
material which is partially dissolved in a paper mill digester. This glue is
called:
A) cellulose
B) binder
C) lignin
D) glucose
Question 31 Value: 1 Path:
The solid waste that is removed from the lime/liquor mixture at the slaker
is called:
A) dregs
B) grits
C) lime mud
D) lime rock
Question 32 Value: 1 Path:
The organic matter and carbon in black liquor burns mostly in a pile on the
floor of the furnace. This is called the:
A) smelt
B) char bed
C) liquor bed
D) hog bed
Question 33 Value: 1 Path:
In a chemical pulping process the pulp fiber is separated from black liquor
at the:
A) digesters
B) brown stock washers
C) bleach plant
D) recovery plant
Question 34 Value: 1 Path:
When the hot lime is added to green liquor, it reacts with water in the
green liquor to form:
A) calcium hydroxide
B) calcium oxide
C) sodium hydroxide
D) sodium sulfide
Question 35 Value: 1 Path:
The liquor solids concentration after the multiple effect evaporators is
typically about
A) 12%
B) 25%
C) 50%
D) 60% or more
Question 36 Value: 1 Path:
When white paper is being made at a paper mill the brown pulp is converted
to white fiber at the:
A) digesters
B) brown stock
bleach plant
D) recovery plant
Question 37 Value: 1 Path:
Modern chemical recovery boilers do not use direct contact evaporators.
A) True
B) False
Question 38 Value: 1 Path:
Each of the effects in a multiple effect evaporator is at a lower pressure.
This is necessary to ensure that:
A) the liquor flows from one effect to the next
B) steam from the previous
effect is hot enough to boil the liquor
C) the steam will flow from one
effect to the next
D) the non-condensable gases are removed efficiently
Question 39 Value: 1 Path:
At the slaker, and in the causticizers, green liquor is converted to white
liquor by the addition of:
A) calcium hydroxide
B) calcium oxide
C) sodium hydroxide
D) sodium sulfide
Question 40 Value: 1 Path:
The lime kiln uses an auxiliary fuel fired burner to heat the time mud to
dry it and reduce the calcium carbonate. A)True B) False
Question 41 Value: 1 Path:
Liquor that is burned in the recovery boiler is called heavy black liquor
and has a solids concentration of:
A) 12%
B) 25%
C) 50%
D) 60% or more
Question 42 Value: 1 Path:
The liquor in the first effect of a multiple effect evaporator system is
heated and boiled using:
A) Live steam
B) natural gas or oil
C) electricity
D) vapor from the previous effect
Question 43 Value: 1 Path:
When water comes into contact with molten smelt an explosion can result that
is called a:
A) boiler explosion
B) furnace explosion
C) smelt water reaction
D) furnace puff
Question 44 Value: 1 Path:
The liquor in each effect of a multiple effect evaporator except the first
effect heated using:
A) live steam
B) natural gas or oil
C) electricity
D) vapor from the previous effect
Question 45 Value: 1 Path:
The solid contaminants removed from green liquor and discarded are called:
A) dregs
B) grits
C) lime mud
D) lime rock
Question 46 Value: 1 Path:
Non-condensable gases, which are released from the black liquor in the
evaporators, is drawn off and usually burned in the lime kiln.
A) True B) False
Question 47 Value: 1 Path:
The first step in recovering the chemicals from black liquor is evaporation.
The process begins in the:
A) direct contact evaporators
B) cascade evaporator
C) multiple effect evaporator
D) concentrator
Question 48 Value: 1 Path:
A steam jet is used to break up the flow from the recovery boiler smelt
spouts. This is called the:
A) shatter spray
B) liquor nozzle
C) hood shower
D) smelt deflector
Question 49 Value: 1 Path:
The water which is used to wash the lime mud in the mud washer is:
A) fresh water
B) clean condense
C) contaminated condensate from the evaporators
D) green liquor
Question 50 Value: 1 Path:
The chemical in black liquor that is not converted in the recovery boiler
furnace is:
A) sodium hydroxide
B) sodium carbonate
C) calcium carbonate
D) calcium hydroxide
E) sodium sulfate
You should be able to review your notes and match these questions for you best understanding.
Materials prepared for self test. Good Luck!
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