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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of

0.9
0.75
0.99
0.85

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Compressors, Gas Turbines and Jet Engines
For speed above 3000 km/hour, it is more advantageous to use

Rockets
Ramjet engine
Propellers
Turbojet engine

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Compressors, Gas Turbines and Jet Engines
1 m of air at atmospheric condition weighs approximately

1.3 kg
2.2 kg
0.5 kg
1.0 kg

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Compressors, Gas Turbines and Jet Engines
Reheating in a multistage expansion gas turbine ________ compressor work.

Has no effect on
None of these
Increases
Decreases

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Compressors, Gas Turbines and Jet Engines
Pressure ratio in gas turbines is the ratio of

Inlet pressure to exhaust pressure
Compressor pressure ratio
Pressures across the turbine
Highest pressure to exhaust pressure

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Compressors, Gas Turbines and Jet Engines
A closed cycle gas turbine works on

Joule cycle
Carnot cycle
Rankine cycle
Ericsson cycle

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