4678015
Beschreibung
Quiz von TRAVIS CANNING, aktualisiert more than 1 year ago
|
Erstellt von TRAVIS CANNING
vor fast 9 Jahre
|
|
Frage 1
Frage
Early gas turbines were handicapped by
Antworten
-
metal not being able to withstand high speed centrifugal forces
-
the inability to get enough air into the combustion chamber
-
metals not standing the high temperatures involved
-
their high operating speeds
-
their inadequate power cabability
Frage 2
Frage
The temperature to which the air can be raised at the turbine inlet is
Antworten
-
an indication of a units power
-
directly related to the unit's size
-
a function of the air compressor input
-
an indication of the units efficiency
-
improper for proper compressor performance
Frage 3
Frage
The output power of a gas turbine is directly related to the
Antworten
-
mass of gas passing though the turbine per second
-
temperate at the turbine inlet
-
mass of the unit
-
slippage between the turbine and compressor
-
turbine exhaust temperature
Frage 4
Frage
The low installation cost of a gas turbine is
Antworten
-
due to cheap materials in the blades
-
due to short fuel lines
-
because no fuel pump is required
-
because no electrical wiring is required
-
because less auxillary equipment is needed
Frage 5
Frage
Some of the characteristics which make the gas turbine a better choice over other prime movers are
1. Low maintenance
2. Minimal cooling water
3. high thermal efficiency
4. rapid start-up and loading
Antworten
-
1,2,3,4
-
1,2,3
-
1,2,4
-
1,3,4
-
2,3,4
Frage 6
Frage
The air side of a gas turbine regenerator is located
Antworten
-
before the compressor
-
after the combustion chamber
-
between the turbine and the combustion chamber
-
between the turbine and atmosphere
-
downstream of the compressor
Frage 7
Frage
A gas turbine performs most effectively if
Antworten
-
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
Frage 8
Frage
A combined steam and gas turbine arrangement can be termed
Antworten
-
an ideal system
-
a cogeneration system
-
a once through system
-
ideal relative to system efficiency
-
a high capacity system
Frage 9
Frage
The purpose of a regenerator is
Antworten
-
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
-
to recirculate the exhaust gases back through the compressor
Frage 10
Frage
A _________ is suitable for use in the unmanned and remote locations
Antworten
-
steam turbine plant
-
cogeneration plant
-
gas turbine system
-
nuclear plant
-
thermal generating plant
Frage 11
Frage
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
Antworten
-
1,2,3
-
2,3,4,5,6
-
1,2,4,6
-
1,3,4
-
1,2,3,4,5,6
Frage 12
Frage
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
Antworten
-
1,2
-
2,3,4
-
1,2,4
-
1,2,3
-
1,2,3,4
Frage 13
Frage
The output power on a gas turbine increases when its colder outside because:
Antworten
-
cooling water requirements 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
Frage 14
Frage
A ________ gas turbine system uses the same working fluid over and over again
Antworten
-
open cycle
-
dual shaft
-
closed cycle
-
regenerator
-
emergency power
Frage 15
Frage
The major components of a gas turbine system include
Antworten
-
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
Frage 16
Frage
Two stage compression is used in a gas turbine system to:
Antworten
-
increased turbine output
-
reduce the size of the machine
-
lower the amount of fuel consumed
-
reduce maintenance costs
-
increase the compressor life
Frage 17
Frage
A regenerator in a gas turbine cycle is located:
Antworten
-
between the combustor and the turbine
-
between the compressor stages
-
prior to air compression
-
between the compressor and the combustor
-
at the turbine outlet
Frage 18
Frage
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
Antworten
-
1,2,3,4,6
-
1,2,3,4,5
-
2,3,4,5,6
-
1,3,5
-
1,2,3,5
Frage 19
Frage
A gas turbine operates on the
Antworten
-
otto cycle
-
daltons law
-
brayton cycle
-
Charles law
-
diesel
Frage 20
Frage
Remote gas turbines may be started by:
1. mechanical linkages 2. telephone
3. radio link 4. timer relays
Antworten
-
2,3
-
1,2
-
3,4
-
1,4
-
2,4
Frage 21
Frage
In a total energy arrangement a gas turbine may exhaust its flue gas to:
1. HRSG 2. waste heat boiler 3. atmosphere 4. SAGD
Antworten
-
1,2
-
1,3
-
2,4
-
1,4
-
1,2,4
Frage 22
Frage
A gas turbine may be used as a prime mover to operate:
Antworten
-
air compressors
-
fire pumps
-
generators
-
emergency equipment
-
all of the above
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.