Quiz
4.2 Steam Turbine Auxillaries and Operation
Fragen in diesem Quiz (10)
1In a turbine circuit, feed heaters and dearators serve to:
- Ause up excess steam
- BIncrease efficiency
- CProvide load during low demand periods
- DIncrease turbine output
2The high-pressure oil system of a typical turbine supplies oil to
- ABearings
- BGears
- CEmergency stop valves
- DThe oil purifier
- EThe auxillary oil pump
3When starting a condensing or extraction turbine, the extraction (condensate)pump is started ______ the _____
1. before
2. after
3. air ejector
4. jacking oil pump
5. condenser circulating water pump- A1,3
- B2,3
- C1,4
- D1,5
- E2,5
4When starting an extraction turbine, sealing steam to the turbine glands is admitted _____ is put in operation
- ABefore the extraction pump
- BBefore the condenser circulating water pump
- CAfter the air ejector
- DAfter the extraction pump
- EAfter the throttle valve is open
5The jacking oil pump is shut down when the turbine reaches a speed of approximately _____ rpm
- A5-10
- B20-30
- C40-50
- D50-60
- E0-80
6The overspeed trip a turbine is usually set to trip the mechanism when it reaches ____ of operating speed
- A100%
- B105%
- C110%
- D115%
- E120%
7Lubricating oil for a turbine may:
1. Lubricate bearings
2. Lubricate gears.
3. Operate throttle valves.
4. Be supplied to a governor.- A1,2
- B3,4
- C1,2,3
- D2,3,4
- E1,2,3,4
8When a hydraulic overspeed trip operates
1. High pressure oil forces the main steam valve shut.
2. High pressure oil supply is shut off
3. The stop valve oil cylinder drain is closed.
4. The stop valve oil cylinder drain is opened
5. A spring closes the main steam valve
6. The pilot drain is closed- A1,3,6
- B2,4,5
- C3,4,6
- D2,4,6
- E3,4,5
9The warm up time required of a turbine is dependant on
- AHow quickly the turbine is required
- BThe manufacturers instructions
- CThe size of the turbine
- DThe type of turbine
- EWhether the steam is dry or wet
10Overload governing is used on ______ turbines
- ASmall
- BImpulse
- CLow pressure
- DReaction
- EImpulse and Reaction
Informationen
- Beschreibung
- power engineering 3b2 Quiz am 4.2 Steam Turbine Auxillaries and Operation, erstellt von TRAVIS CANNING am 29/02/2016.
- Autor
- TRAVIS CANNING
- Sprache
- English
- Aufrufe
- 43
- Verlauf
- Erstellt am 29 Feb 2016 · aktualisiert am 1 Mai 2016
- Schlagwörter
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