4671052
Descrição
Quiz por TRAVIS CANNING, atualizado more than 1 year ago
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Criado por TRAVIS CANNING
aproximadamente 8 anos atrás
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Questão 1
Questão
Some of the characteristics which make the gas turbine a better choice over other prime movers are
1. low maintenance
2. minimum cooling water
3. high thermal efficiency
4. rapid start-up and loading
Responda
-
1,2,3,4
-
1,2,3
-
1,2,4
-
1,3,4
-
2,3,4
Questão 2
Questão
The air side of a gas turbine regenerator is located
Responda
-
before the compressor
-
after the combustion chamber
-
between the turbine and combustion chamber
-
downstream of the compressor
Questão 3
Questão
A gas turbine performs most effectively if
Responda
-
lube oil is of the proper viscosity
-
cooling water temperature is kept low
-
ambient air temperature is high
-
ambient air temperature is low
-
loaded immediately after starting
Questão 4
Questão
A combined steam and gas turbine arrangement can be termed
Responda
-
an ideal system
-
a cogeneration system
-
a once through system
-
ideal relative to system efficiency
-
a higher capacity system
Questão 5
Questão
The purpose of a regenerator is
Responda
-
to clean the exhaust gases
-
to improve the efficiency of the turbine
-
to increase the temperature in the combustion chamber
-
to lower the temperature in the combustion chamber
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to recirculate the exhaust gases back through the compressor
Questão 6
Questão
A __________ is suitable for use in unmanned and remote locations
Responda
-
steam turbine plant
-
cogeneration plant
-
gas turbine system
-
nuclear plant
-
thermal generating plant
Questão 7
Questão
Gas turbine advantages include
1. high thermal efficiency
2. lower initial cost
3. quick start up
4. little cooling water requirements
5. power to mass ratio is high
6. remote operation
Responda
-
1,2,3
-
2,3,4,5,6
-
1,2,4,6,
-
1,3,4
-
1,2,3,4,5,6
Questão 8
Questão
Disadvantages of a closed cycle gas turbine include:
1. higher initial cost
2. increased cooling water requirements
3. turbine blade fouling
4. they require more creep resistant material than open cycle turbines
Responda
-
1,2
-
2,3,4
-
1,2,4
-
1,2,3
-
1,2,3,4
Questão 9
Questão
The output power on a gas turbine increases when its colder outside because
Responda
-
cooling water requiremetns are lower
-
colder air has the ability to hold more moisture
-
higher compressor volumetric efficiency
-
mass flow of the incoming air is greater
-
all of the above
Questão 10
Questão
A ________ gas turbine system uses the same working fluid over and over again.
Responda
-
open cycle
-
dual shaft
-
closed cycle
-
regenerator
-
emergency power
Questão 11
Questão
The major components of a gas turbine system include.
Responda
-
low pressure compressor, turbine and duxt burner
-
compressor, combustor and regenerator
-
compressor, combustor and turbine
-
starting motor, oil coolers and flux capacitor
-
generator, compressor, turbine and combustor
Questão 12
Questão
Two stage compression is used in a gas turbine system to:
Responda
-
increase turbine output
-
reduce the size of the machine
-
lower the amount of fuel consumed
-
reduce maintenance costs
-
increase the compressor life
Questão 13
Questão
A regenerator in a gas turbine cycle is located:
Responda
-
between the combustor and the turbine
-
between air compressor stages
-
prior to air compression
-
between the compressor and the combustor
-
at the turbine outlet
Questão 14
Questão
A gas turbine is most efficient when
1. clean fuel is used
2. turbine blades are clean
3. gas path is clean
4. lubricating oil is clean
5. ambient air temp is low
6. operated at 1/2 load
Responda
-
1,2,3,4,6
-
1,2,3,4,5
-
2,3,4,5,6
-
1,3,5
-
1,2,3,5
Questão 15
Questão
A gas turbine operatos on the:
Responda
-
otto cycle
-
Daltons law
-
brayton cycle
-
Charles law
-
diesel
Questão 16
Questão
Remote gas turbines may be started by:
1. mechanical linkages
2. telephone
3. radio link
4. tiber relays
Responda
-
2,3
-
1,2
-
3,4
-
1,4
-
2,4
Questão 17
Questão
In a total energy arrangement a gas turbine may exhaust its flue gas to
1.HRSG
2. waste heat boiler
3. atmosphere
4. SAGD
Responda
-
1,2
-
1,3
-
2,4
-
1,4
-
1,2,4
Questão 18
Questão
A gas turbine may be used as a prime mover to operate:
Responda
-
air compressors
-
fire pumps
-
generators
-
emergency equipment
-
all of the above
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