Power Engineering 3B1 Exam Review UPDATED ACTUAL Questions and
CORRECT Answers
Question: In a cyclone precipitator a spray of water turns the individual dust particles into heavy mud
particles. Select one
Correct Answer: A) True B) False: A
Question: To achieve lower NOx the flame temperature must be kept as low as possible. This is achieved
by
Correct Answer: Select one: A. flue gas recirculation B. adding more O2 to the main flame C. air staging
D. fuel conditioning E. A & C F. B & D G. C & D: E
Question: Calcium sulphate, in particular, is the main scale forming constituent found in boiler water and
when ___________ out of solution onto a hot metal surface, it forms a hard, dense scale. Select one
Correct Answer: A. coagulated B. flocculated C. filtered D. precipitated: D
Question: In a ________ stoker, altering the position of the spill plate or the speed of the rotor changes the
distance the coal is thrown. Select one
Correct Answer: A. overfeed B. crossfeed C. traveling D. spreader: D
Question: Which of the following are functions of the auxiliary fuel burners in a Black Liquor Recovery
Boiler
Correct Answer: 1. Stabilize conditions during upsets in the black liquor feed 2. Produce extra steam 3.
Burn out the char bed when shutting down 4. Maintain furnace temperatures 5. Sustain a stable ignition
while establishing a char bed
Question: Raise steam during startup Select one
Correct Answer: A. 1, 2, 3 B. 1. 2. 3. 5. 6. C. 4, 5, 6, D. 1, 2 E. 3, 5: B 6. The temperatures of the flue gas
leaving the preheater must be kept above the _______ to avoid condensation. Select one: A. flash point B.
melt point C. dewpoint D. ambient: C
Question: The official Code "U" symbol can only be applied to vessels that have been _________. Select
one
Correct Answer: A. manufactured B. inspected C. hydro-tested D. purchased: B
Question: The two most common designs of chemical feed pumps are the___________, plunger-type and
the electronic impulse-type. Select one
Correct Answer: A. electric B. electronic C. reciprocating D. vibrating: C
Question: Curved furnace baffles have the advantage of
Correct Answer: 1. promoting higher heat transfer 2. having no sharp turns. 3. improving air flow 4.
reducing refractory requirements Select one: A. 1. B. 2. C. 1, 2, 3 D. 2. 3. 4 E. 3, 4: B
Question: __________ is spherical or tube like defects, cavities, or voids caused by gases trapped inside
the weld or gases that have evolved to the surface. Select one
Correct Answer: A. Porosity B. Slag inclusions C. Cracks D. Checks: A
, Question: A direct pressure combustion control system, may be used on boilers where the fuel flow is
________ to measure. Select one
Correct Answer: A. easy B. difficult C. necessary D. important: B
Question: The bottom-supported boiler has concrete drum _________, which support the bottom drum and
bottom headers. Select one
Correct Answer: A. hangers B. holders C. foundations D. feet: C
Question: Large quantities of ______ are used to complete the foundations, which must support the loads
from the boiler and all of the auxiliary equipment. Select one
Correct Answer: A. steel B. refractory C. earth D. cement: D
Question: In a closed system completely filled with liquid, no vapours will form as long as the liquid is
subjected to a pressure that is greater than the ______ pressure of the liquid. Select one
Correct Answer: A. vapour B. total C. relative D. density: A
Question: Heating surfaces must be _____ to ensure maximum heat transfer to the water and steam in the
boiler. Select one
Correct Answer: A. large B. clean C. contacted D. free: B
Question: Every steam boiler having a working pressure exceeding 103 kPa
Correct Answer: 1 Shall be equipped with two approved blow-off valves 2 Must have at least one
slow-opening blow-off valve 3 Must have two slow-opening blow-off valves4 Must have two
quick-opening blow-off valves Select one: A. 1, 4 B. 1, 2, 4 C. 1, 2 D. 3, 4 E. 1, 3: C
Question: In order for the gauge glass to show the correct level, all connections to the gauge glass and the
water column, must be _________ to ensure they are clear and free from obstructions. Select one
Correct Answer: A. tight B. purged C. blowndown D. unblocked: C
Question: The main feature of a Controlled Circulation Boiler is a (circulating) pump, which is used to
provide circulation. Select one
Correct Answer: True False: A
Question: In underground structures, the _______ portion of the minerals around he structure may react
with H+ to contribute to deposits of scale and sludge. Select one
Correct Answer: A. cationic B. anionic C. neutral D. positive E. carbon: B
Question: An increase in boiler load or steam flow causes a proportional increase in the steam flow signal
and an increase in output of the computing relay which becomes the set point in the controller. Select one
Correct Answer: A) True B) False: A
Question: The reheater receives steam that has already expanded through a portion of the turbine, and as a
result of this expansion has dropped in pressure and in _________. Select one
Correct Answer: A. quality B. volume C. temperature D. energy: C
Question: Shot feeding involves the injection of chemicals over a relatively ______ period of time. Select
one
Correct Answer: A. long B. intermittent C. short D. measured: C
CORRECT Answers
Question: In a cyclone precipitator a spray of water turns the individual dust particles into heavy mud
particles. Select one
Correct Answer: A) True B) False: A
Question: To achieve lower NOx the flame temperature must be kept as low as possible. This is achieved
by
Correct Answer: Select one: A. flue gas recirculation B. adding more O2 to the main flame C. air staging
D. fuel conditioning E. A & C F. B & D G. C & D: E
Question: Calcium sulphate, in particular, is the main scale forming constituent found in boiler water and
when ___________ out of solution onto a hot metal surface, it forms a hard, dense scale. Select one
Correct Answer: A. coagulated B. flocculated C. filtered D. precipitated: D
Question: In a ________ stoker, altering the position of the spill plate or the speed of the rotor changes the
distance the coal is thrown. Select one
Correct Answer: A. overfeed B. crossfeed C. traveling D. spreader: D
Question: Which of the following are functions of the auxiliary fuel burners in a Black Liquor Recovery
Boiler
Correct Answer: 1. Stabilize conditions during upsets in the black liquor feed 2. Produce extra steam 3.
Burn out the char bed when shutting down 4. Maintain furnace temperatures 5. Sustain a stable ignition
while establishing a char bed
Question: Raise steam during startup Select one
Correct Answer: A. 1, 2, 3 B. 1. 2. 3. 5. 6. C. 4, 5, 6, D. 1, 2 E. 3, 5: B 6. The temperatures of the flue gas
leaving the preheater must be kept above the _______ to avoid condensation. Select one: A. flash point B.
melt point C. dewpoint D. ambient: C
Question: The official Code "U" symbol can only be applied to vessels that have been _________. Select
one
Correct Answer: A. manufactured B. inspected C. hydro-tested D. purchased: B
Question: The two most common designs of chemical feed pumps are the___________, plunger-type and
the electronic impulse-type. Select one
Correct Answer: A. electric B. electronic C. reciprocating D. vibrating: C
Question: Curved furnace baffles have the advantage of
Correct Answer: 1. promoting higher heat transfer 2. having no sharp turns. 3. improving air flow 4.
reducing refractory requirements Select one: A. 1. B. 2. C. 1, 2, 3 D. 2. 3. 4 E. 3, 4: B
Question: __________ is spherical or tube like defects, cavities, or voids caused by gases trapped inside
the weld or gases that have evolved to the surface. Select one
Correct Answer: A. Porosity B. Slag inclusions C. Cracks D. Checks: A
, Question: A direct pressure combustion control system, may be used on boilers where the fuel flow is
________ to measure. Select one
Correct Answer: A. easy B. difficult C. necessary D. important: B
Question: The bottom-supported boiler has concrete drum _________, which support the bottom drum and
bottom headers. Select one
Correct Answer: A. hangers B. holders C. foundations D. feet: C
Question: Large quantities of ______ are used to complete the foundations, which must support the loads
from the boiler and all of the auxiliary equipment. Select one
Correct Answer: A. steel B. refractory C. earth D. cement: D
Question: In a closed system completely filled with liquid, no vapours will form as long as the liquid is
subjected to a pressure that is greater than the ______ pressure of the liquid. Select one
Correct Answer: A. vapour B. total C. relative D. density: A
Question: Heating surfaces must be _____ to ensure maximum heat transfer to the water and steam in the
boiler. Select one
Correct Answer: A. large B. clean C. contacted D. free: B
Question: Every steam boiler having a working pressure exceeding 103 kPa
Correct Answer: 1 Shall be equipped with two approved blow-off valves 2 Must have at least one
slow-opening blow-off valve 3 Must have two slow-opening blow-off valves4 Must have two
quick-opening blow-off valves Select one: A. 1, 4 B. 1, 2, 4 C. 1, 2 D. 3, 4 E. 1, 3: C
Question: In order for the gauge glass to show the correct level, all connections to the gauge glass and the
water column, must be _________ to ensure they are clear and free from obstructions. Select one
Correct Answer: A. tight B. purged C. blowndown D. unblocked: C
Question: The main feature of a Controlled Circulation Boiler is a (circulating) pump, which is used to
provide circulation. Select one
Correct Answer: True False: A
Question: In underground structures, the _______ portion of the minerals around he structure may react
with H+ to contribute to deposits of scale and sludge. Select one
Correct Answer: A. cationic B. anionic C. neutral D. positive E. carbon: B
Question: An increase in boiler load or steam flow causes a proportional increase in the steam flow signal
and an increase in output of the computing relay which becomes the set point in the controller. Select one
Correct Answer: A) True B) False: A
Question: The reheater receives steam that has already expanded through a portion of the turbine, and as a
result of this expansion has dropped in pressure and in _________. Select one
Correct Answer: A. quality B. volume C. temperature D. energy: C
Question: Shot feeding involves the injection of chemicals over a relatively ______ period of time. Select
one
Correct Answer: A. long B. intermittent C. short D. measured: C
