Test
for everyone quiz 3
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Preguntas del test (17)
1A cogeneration system incorporating a diverter valve uses this to do which of the following?
- AAllow combustion gases to enter the HRSG
- BAllow steam entering into the steam turbine
- CExpel the combustion gases back into the turbine
- DAll of the above
- ENone of the above
2Which of the following is the first step in starting up a cogeneration system?
- AThe gearbox will engage the starting motor
- BTurbine is rotated to about 55% of rated speed
- CDiverter valve will open to atmosphere
- DOperator initiates a turbine start up from the control room
- ENone of the above
3Water jackets used in a cogeneration system are used to serve which purpose?
- ARecover the heat produced to cool the engine
- BCool the air surrounding the engine
- CCool the lubricating oil of the engine
- DAll of the above
- ENone of the above
4Carbon dioxide, one of the most important parts of the combustion process is well known for which of the following?
- AClimatic change
- BGreenhouse effect
- CAcid rain
- D1 and 2
- ENone of the above
5The level of NOx emissions is dependant on which of the following?
- ACombustion chamber geometry
- BAir/fuel mixture
- CPressure
- DTemperature
- EAll of the above
6The main application for a HRSG is to do which of the following?
- ASteam generation using gas turbine exhaust
- BSteam generation using BFW
- CDecrease the load on a single piece of equipment
- DAll of the above
- ENone of the above
7A HRSG unit may include auxiliary or duct burners that are used to do which of the following?
- AIncrease the production of steam
- BControl the superheater temperatures
- CMeet process steam temperature requirements
- DAll of the above
- ENone of the above
8Low thermal requirements of a control system may occur during which of the following times?
- ADuring start-up
- BDuring times of low production
- CDuring times of low electrical requirements
- DAll of the above
- ENone of the above
9A cogeneration system that is not connected to the electrical grid will do which of the following?
- ASupply all the electrical requirements at the site
- BSupply emergency back up electrical requirements
- CSupply back up electrical requirements
- DAll of the above
- ENone of the above
10The biggest advantages of a combined cycle power plant with a single- shaft gas/steam turbine arrangement are?
- AHighest level of thermal efficiency
- BExtremely low capital cost
- CShort project and construction times
- DLow operation and maintenance costs
- EAll of the above
11Multi shaft combined- cycle power plants have high efficiency at base load operation.
- AVerdadero
- BFalso
12The extra electricity produced by the combined cycle plant gives it which of the following advantages over the conventional steam generating plant?
- ASignificant increase in thermal efficiency
- BEmissions to atmosphere are lower
- CLess fuel is needed
- DAll of the above
- ENone of the above
13A fully- fired combined cycle cogeneration system may include which of the following?
- AFired HRSG
- BGas turbine
- CSteam turbine
- DGenerators
- EAll of the above
14Combined cycle cogeneration refers to which of the following?
- AProduction of electricity from two sources utilizing one fuel source
- BProduction of electricity from one source utilizing two fuel sources
- CProduction of electricity from one source utilizing only a single fuel source
- DAll of the above
- ENone of the above
15The acronym HRSG represents which of the following?
- AHot reboiler steam generator
- BHot recovery steam generator
- CHeat recovery steam generator
- DHeater reboiler steam generator
16Cogeneration can increase the overall plant efficiency to a value between __ and __%?
- A30 and 40
- B40 and 60
- C40 and 50
- D60 and 90
- E95 and 100
17Various types of simple-cycle cogeneration plants include which of the following?
- AWaste heat cogeneration
- BHeat engine cogeneration
- CBack pressure steam turbine
- DGas turbine
- EAll of the above
Información
- Descripción
- power engineering 3b2 Test sobre for everyone quiz 3, creado por TRAVIS CANNING el 28/02/2016.
- Autor
- TRAVIS CANNING
- Idioma
- English
- Visitas
- 24
- Historial
- Creado el 28 feb 2016 · actualizado el 29 feb 2016
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