5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
1. Cast-iron sectional boilers have Increase heat transfer
flue gas passages which
2. Steel plate heating boilers have Firetubes to give the gases a swirling motion
thin steel installed in the
3. The vertical firetube boiler has a Upper and lower tube sheets
cylindrical shell with tubes con-
nected between the
4. Vertical firetube boilers have Floor space
an advantage when___________ is
limited.
5. The "A" type boiler is constructed three
with _________ drums.
6. In general construction the locomotive
Firebox boiler is not unlike
the____________ boiler.
7. A modular cast-iron heating boil- Consists of a number of horizontal sectional cast-iron boil-
er ers
8. The HRT boiler is classified as a two
_______ pass boiler.
9. The boilers or modules in a mul- Most typically connected in parallel between the supply
tiple heating boiler plant are: and return header
10. The switch in the operating con- Falling steam pressure
trol of a steam boiler is closed by:
, 5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
11. A thermocouple consists of two Hot junction
dissimilar wires welded together
at one end to form a:
12. A heating boiler must have a per- Lowest permissible water level
manently attached marker indi-
cating:
13. What is the name given to the Programming controller
component that coordinates and
sequences the boiler operation?
14. On a hot water boiler, the highest 1.5
value on the graduated scale of
the pressure gauge shall not be
less than ______ times the pres-
sure at which the pressure relief
valve is set.
15. The programmed startup se- 1. The operating control closes a switch
quence of oil-fired boilers with 2. The load relay energizes the ignition transformer, fuel
no pilot light is as follows: oil shut-off valve, and motor driving the air fan and fuel
pump
3. The spark from the ignition transformer ignites the main
burner
4. The flame detector senses the flame and causes the
flame relay to close5. The ignition transformer is then
de-energized
16. The boiler vent valve is used for Air to escape while filling
the purpose of allowing:
, 5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
17. If for any reason, the burner The fuel to the burner must be shut off immediately
should go out during normal op-
eration, or the fuel should fail to
ignite during startup:
18. The discharge piping from the Terminated above a floor drain
relief valve should be piped to a
safe point for disposal and can
be:
19. The time taken for the automatic 10
pilot valve to close in the event of
a loss of flame detection is about
______ seconds
20. The boiler firebox, gas passages Vacuuming
and chimney should be thor-
oughly cleaned by wire brushing
and:
21. Leakage of a few drops a minute Scoring of the shaft
leakage from the packing gland
of circulating pumps is desirable
to prevent drying out of packing
and:
22. Boiler explosions may be list- Furnace explosions and Pressure explosions
ed under two general classifica-
tions:
23. If the water level in a steam Shut down immediately
boiler is found to be below the
, 5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
gauge glass, the boiler should
be:
24. When inspecting the fireside of Overheating
the boiler the surfaces are exam-
ined for bulges or blisters which
would indicate:
25. Which of the following is done Warm the boiler up as slowly as possible
to prevent excessive stresses of
boiler metal due to uneven ex-
pansion?
26. The dye penetrant, entrapped in Developer
a crack, is brought to the surface
by the action of the:
27. The boiler certificate of inspec- Should be conspicuously placed adjacent to the boiler or
tion: retained and safeguarded in a manner approved by the
inspector
28. With reference to Power Engi- Sense, Interpret, Analyze, Perform
neering the letters "SIAP" mean:
29. Hydrostatic testing of a boiler 1.5 times
requires that the pressure be
raised to ___________ the Maxi-
mum Allowable Working Pres-
sure stamped on the boiler.
30. An intermittent pilot: Is automatically ignited at the start of each burner oper-
ation and continues to burn throughout the main burner
period
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
1. Cast-iron sectional boilers have Increase heat transfer
flue gas passages which
2. Steel plate heating boilers have Firetubes to give the gases a swirling motion
thin steel installed in the
3. The vertical firetube boiler has a Upper and lower tube sheets
cylindrical shell with tubes con-
nected between the
4. Vertical firetube boilers have Floor space
an advantage when___________ is
limited.
5. The "A" type boiler is constructed three
with _________ drums.
6. In general construction the locomotive
Firebox boiler is not unlike
the____________ boiler.
7. A modular cast-iron heating boil- Consists of a number of horizontal sectional cast-iron boil-
er ers
8. The HRT boiler is classified as a two
_______ pass boiler.
9. The boilers or modules in a mul- Most typically connected in parallel between the supply
tiple heating boiler plant are: and return header
10. The switch in the operating con- Falling steam pressure
trol of a steam boiler is closed by:
, 5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
11. A thermocouple consists of two Hot junction
dissimilar wires welded together
at one end to form a:
12. A heating boiler must have a per- Lowest permissible water level
manently attached marker indi-
cating:
13. What is the name given to the Programming controller
component that coordinates and
sequences the boiler operation?
14. On a hot water boiler, the highest 1.5
value on the graduated scale of
the pressure gauge shall not be
less than ______ times the pres-
sure at which the pressure relief
valve is set.
15. The programmed startup se- 1. The operating control closes a switch
quence of oil-fired boilers with 2. The load relay energizes the ignition transformer, fuel
no pilot light is as follows: oil shut-off valve, and motor driving the air fan and fuel
pump
3. The spark from the ignition transformer ignites the main
burner
4. The flame detector senses the flame and causes the
flame relay to close5. The ignition transformer is then
de-energized
16. The boiler vent valve is used for Air to escape while filling
the purpose of allowing:
, 5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
17. If for any reason, the burner The fuel to the burner must be shut off immediately
should go out during normal op-
eration, or the fuel should fail to
ignite during startup:
18. The discharge piping from the Terminated above a floor drain
relief valve should be piped to a
safe point for disposal and can
be:
19. The time taken for the automatic 10
pilot valve to close in the event of
a loss of flame detection is about
______ seconds
20. The boiler firebox, gas passages Vacuuming
and chimney should be thor-
oughly cleaned by wire brushing
and:
21. Leakage of a few drops a minute Scoring of the shaft
leakage from the packing gland
of circulating pumps is desirable
to prevent drying out of packing
and:
22. Boiler explosions may be list- Furnace explosions and Pressure explosions
ed under two general classifica-
tions:
23. If the water level in a steam Shut down immediately
boiler is found to be below the
, 5th Class Power Engineering Exam Questions and Answers | Latest Updat
2026/2027 | Graded A+.
Study online at https://quizlet.com/_jit83t
gauge glass, the boiler should
be:
24. When inspecting the fireside of Overheating
the boiler the surfaces are exam-
ined for bulges or blisters which
would indicate:
25. Which of the following is done Warm the boiler up as slowly as possible
to prevent excessive stresses of
boiler metal due to uneven ex-
pansion?
26. The dye penetrant, entrapped in Developer
a crack, is brought to the surface
by the action of the:
27. The boiler certificate of inspec- Should be conspicuously placed adjacent to the boiler or
tion: retained and safeguarded in a manner approved by the
inspector
28. With reference to Power Engi- Sense, Interpret, Analyze, Perform
neering the letters "SIAP" mean:
29. Hydrostatic testing of a boiler 1.5 times
requires that the pressure be
raised to ___________ the Maxi-
mum Allowable Working Pres-
sure stamped on the boiler.
30. An intermittent pilot: Is automatically ignited at the start of each burner oper-
ation and continues to burn throughout the main burner
period
