POWER ENGINEERING 3B2 - CHAPTER
2 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
If left at a standstill, while the turbine is still hot, the lower half of the rotor will cool off faster
than the upper half and the rotor will ______________________ or "hog".
a. turn on it's own
b. bend upwards
c. twist
d. bend downwards
e. stall - ANS B
A barring gear consists of an electric motor and several sets of reducing gears to turn the
turbine shaft at a low speed. It is used:
1) After stopping a hot turbine to prevent "hogging"
2) Only on small turbine
3) Continually when the turbine is not operating
4) Prior to start-up for approximately 3 hours
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,a. 1, 2, 4
b. 1, 2, 3
c. 1, 4
d. 2, 3
e. 2, 4 - ANS C
A jacking oil pump is used to:
1) Make slight adjustments to the turbine bearing housings during overhaul to maintain
alignment
2) Supply oil to a hydraulic motor for the turning gear
3) Supply oil to the bearings under the shaft at all times so lubrication is assured
4) Supply a high volume of oil at high pressure
a. 1, 2, 3
b. 2, 3, 4
c. 1, 3, 4
d. 1, 2, 3, 4
e. None of the above - ANS E - It supplies oil under the bearings but not "at all times." Only
before startup. It is shut off when the speed is above 50-60 rpm
In a nuclear power station a _____________ supplies heat through a _________ to the working
fluid in place of a steam plant boiler.
1) reactor
2) heat exchanger
3) burner
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 4) pump
a. 1, 2
b. 1, 3
c. 3, 2
d. 1, 4
e. 2, 4 - ANS A
In a nuclear power plant circulating coolant picks up heat in the reactor and rejects it to the
_______________ in the steam cycle by means of a heat exchanger.
a. hotwell
b. condenser
c. working fluid
d. turbine
e. feed pump - ANS C
With _________ a series of nozzle valves opens in sequence as the load increases. This type of
governing is most efficient and is used for impulse turbines.
a. throttle governing
b. nozzle governing
c. speed governing
d. by-pass governing
e. overload governing - ANS B
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
2 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
If left at a standstill, while the turbine is still hot, the lower half of the rotor will cool off faster
than the upper half and the rotor will ______________________ or "hog".
a. turn on it's own
b. bend upwards
c. twist
d. bend downwards
e. stall - ANS B
A barring gear consists of an electric motor and several sets of reducing gears to turn the
turbine shaft at a low speed. It is used:
1) After stopping a hot turbine to prevent "hogging"
2) Only on small turbine
3) Continually when the turbine is not operating
4) Prior to start-up for approximately 3 hours
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,a. 1, 2, 4
b. 1, 2, 3
c. 1, 4
d. 2, 3
e. 2, 4 - ANS C
A jacking oil pump is used to:
1) Make slight adjustments to the turbine bearing housings during overhaul to maintain
alignment
2) Supply oil to a hydraulic motor for the turning gear
3) Supply oil to the bearings under the shaft at all times so lubrication is assured
4) Supply a high volume of oil at high pressure
a. 1, 2, 3
b. 2, 3, 4
c. 1, 3, 4
d. 1, 2, 3, 4
e. None of the above - ANS E - It supplies oil under the bearings but not "at all times." Only
before startup. It is shut off when the speed is above 50-60 rpm
In a nuclear power station a _____________ supplies heat through a _________ to the working
fluid in place of a steam plant boiler.
1) reactor
2) heat exchanger
3) burner
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 4) pump
a. 1, 2
b. 1, 3
c. 3, 2
d. 1, 4
e. 2, 4 - ANS A
In a nuclear power plant circulating coolant picks up heat in the reactor and rejects it to the
_______________ in the steam cycle by means of a heat exchanger.
a. hotwell
b. condenser
c. working fluid
d. turbine
e. feed pump - ANS C
With _________ a series of nozzle valves opens in sequence as the load increases. This type of
governing is most efficient and is used for impulse turbines.
a. throttle governing
b. nozzle governing
c. speed governing
d. by-pass governing
e. overload governing - ANS B
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
