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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.83402777777778
0.62569444444444
0.41736111111111
2.5006944444444

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Compressors, Gas Turbines and Jet Engines
Euler's equation is applicable for

Centrifugal compressor
All of these
Pumps
Axial compressor

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Compressors, Gas Turbines and Jet Engines
Reheating in multistage expansion gas turbine results in

Maximum work output
Reduction in compressor work
High thermal efficiency
Decrease of heat loss in exhaust

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Compressors, Gas Turbines and Jet Engines
The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine is

May be less or more depending on ambient conditions
Less
More
Same

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Compressors, Gas Turbines and Jet Engines
Gas turbines use following type of air compressor

Centrifugal type
Lobe type
Reciprocating type
Axial flow type

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Compressors, Gas Turbines and Jet Engines
If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity

U < Vo
Vi = Vo
Vt > Vo
V = Uo

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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