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3B2 - Ultimate ABSA Study Guide C1-15 |
Comprehensive Q & A For Certification
Success
A speed sensitive governor may be:
1. Proportional.
2. Mechanical.
3. Mechanical-hydraulic.
4. Electronic-hydraulic.
a. 1,2
b. 3,4
c. 1,2,3
d. 2,3,4
e. 1,2,3,4. -correct-answer-D
In a mechanical-hydraulic governor system, what is the purpose of the auxiliary oil
pump?
a. It provides oil pressure in case of a main pump failure.
b. It provides oil pressure to the bearings.
c. It provides oil pressure to the governor system.
d. It provides oil pressure during start-up of the turbine.
e. It boosts the main pump's pressure. -correct-answer-D
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An electronic-hydraulic governor system uses:
a. High pressure oil from the turbine oil system.
b. A separate fluid power unit for high pressure oil.
c. Oil pressure of approximately 3000-4000 kPa.
d. Pressure oil from the turbine oil system and boosts it to
approximately 8200-11000 kPa.
e. Flyweights similar to a mechanical-hydraulic governor. -correct-answer-B
A mechanical overspeed trip is designed to in the event of an overspeed
condition.
a. Prevent the turbine's speed from exceeding 150% of its rated speed.
b. Activate an alarm.
c. Drop the turbine's load.
d. Shut off the turbine's steam supply.
e. Throttle the inlet steam. -correct-answer-D
When starting a large condensing or extraction turbine, the lubricating oil pump is
usually started:
a. Just before the turbine is rotated.
b. One half hour before the turbine is rotated.
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c. 2-3 hours before the turbine is rotated.
d. 6-8 hours before the turbine is rotated.
e. The pump is left running at all times. -correct-answer-C
The extraction (condensate) pump is put into operation the .
1. Before.
2. After .
3. Air ejector.
4. Jack oil pump.
5. Condenser circulating water pump.
a. 1, 3
b. 2, 3
c. 1, 4
d. 1, 5
e. 2, 5. -correct-answer-A
When starting a turbine, a speed of 200-300 rpm is maintained for what purpose?
a. To allow the barring gear time to disengage.
b. To allow the operator time to listen for rubbing or other
unusual noises.
c. To ensure all controls are functioning.
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d. To warm up the rotor and casing.
e. To ensure the lube oil system is operating correctly. -correct-answer-D
The warm-up time required of a turbine is dependant on:
a. How quickly the turbine is required.
b. The manufacturer's instructions.
c. The size of the turbine.
d. The type of turbine.
e. Whether the steam is dry or wet. -correct-answer-C
When shutting down a turbine, the first thing done is:
a. Turn off the lube oil cooling water.
b. Test the emergency trip.
c. Start the auxiliary oil pump.
d. Shut off the steam supply.
e. Reduce the load to zero. -correct-answer-E
Sealing steam to the turbine glands is admitted is put in operation
a. Before the extraction pump.
b. Before the condenser circulating water pump.
3B2 - Ultimate ABSA Study Guide C1-15 |
Comprehensive Q & A For Certification
Success
A speed sensitive governor may be:
1. Proportional.
2. Mechanical.
3. Mechanical-hydraulic.
4. Electronic-hydraulic.
a. 1,2
b. 3,4
c. 1,2,3
d. 2,3,4
e. 1,2,3,4. -correct-answer-D
In a mechanical-hydraulic governor system, what is the purpose of the auxiliary oil
pump?
a. It provides oil pressure in case of a main pump failure.
b. It provides oil pressure to the bearings.
c. It provides oil pressure to the governor system.
d. It provides oil pressure during start-up of the turbine.
e. It boosts the main pump's pressure. -correct-answer-D
,2|Page
An electronic-hydraulic governor system uses:
a. High pressure oil from the turbine oil system.
b. A separate fluid power unit for high pressure oil.
c. Oil pressure of approximately 3000-4000 kPa.
d. Pressure oil from the turbine oil system and boosts it to
approximately 8200-11000 kPa.
e. Flyweights similar to a mechanical-hydraulic governor. -correct-answer-B
A mechanical overspeed trip is designed to in the event of an overspeed
condition.
a. Prevent the turbine's speed from exceeding 150% of its rated speed.
b. Activate an alarm.
c. Drop the turbine's load.
d. Shut off the turbine's steam supply.
e. Throttle the inlet steam. -correct-answer-D
When starting a large condensing or extraction turbine, the lubricating oil pump is
usually started:
a. Just before the turbine is rotated.
b. One half hour before the turbine is rotated.
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c. 2-3 hours before the turbine is rotated.
d. 6-8 hours before the turbine is rotated.
e. The pump is left running at all times. -correct-answer-C
The extraction (condensate) pump is put into operation the .
1. Before.
2. After .
3. Air ejector.
4. Jack oil pump.
5. Condenser circulating water pump.
a. 1, 3
b. 2, 3
c. 1, 4
d. 1, 5
e. 2, 5. -correct-answer-A
When starting a turbine, a speed of 200-300 rpm is maintained for what purpose?
a. To allow the barring gear time to disengage.
b. To allow the operator time to listen for rubbing or other
unusual noises.
c. To ensure all controls are functioning.
, 4|Page
d. To warm up the rotor and casing.
e. To ensure the lube oil system is operating correctly. -correct-answer-D
The warm-up time required of a turbine is dependant on:
a. How quickly the turbine is required.
b. The manufacturer's instructions.
c. The size of the turbine.
d. The type of turbine.
e. Whether the steam is dry or wet. -correct-answer-C
When shutting down a turbine, the first thing done is:
a. Turn off the lube oil cooling water.
b. Test the emergency trip.
c. Start the auxiliary oil pump.
d. Shut off the steam supply.
e. Reduce the load to zero. -correct-answer-E
Sealing steam to the turbine glands is admitted is put in operation
a. Before the extraction pump.
b. Before the condenser circulating water pump.
