In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Less than

None of these

Greater than

Equal to

Less than

None of these

Greater than

Equal to

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Compressors, Gas Turbines and Jet Engines
The axial flow compressor is preferred in aircraft gas turbines because of

None of the listed here

Higher thrust

Low frontal area

High pressure rise

None of the listed here

Higher thrust

Low frontal area

High pressure rise

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Compressors, Gas Turbines and Jet Engines
The thrust of a jet propulsion power unit can be increased by

Injecting water into the compressor

Injecting ammonia into the combustion chamber

Burning fuel after gas turbine

All of these

Injecting water into the compressor

Injecting ammonia into the combustion chamber

Burning fuel after gas turbine

All of these

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Compressors, Gas Turbines and Jet Engines
In a jet propulsion

Its functioning does not depend upon presence of air

The propulsive matter is ejected from within the propelled body

None of these

The propulsive matter is caused to flow around the propelled body

Its functioning does not depend upon presence of air

The propulsive matter is ejected from within the propelled body

None of these

The propulsive matter is caused to flow around the propelled body

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Compressors, Gas Turbines and Jet Engines
The pressure ratio in gas turbines is of the order of

0.084027777777778

0.37569444444444

2.5423611111111

0.16736111111111

0.084027777777778

0.37569444444444

2.5423611111111

0.16736111111111

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Compressors, Gas Turbines and Jet Engines
The efficiency of roots blower ________ with the increase in pressure ratio.

Does not change

Decreases

None of these

Increases

Does not change

Decreases

None of these

Increases

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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Compressors, Gas Turbines and Jet Engines The axial flow compressor is preferred in aircraft gas turbines because of

Compressors, Gas Turbines and Jet Engines The thrust of a jet propulsion power unit can be increased by

Compressors, Gas Turbines and Jet Engines In a jet propulsion

Compressors, Gas Turbines and Jet Engines The pressure ratio in gas turbines is of the order of

Compressors, Gas Turbines and Jet Engines The efficiency of roots blower ________ with the increase in pressure ratio.

Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Compressors, Gas Turbines and Jet Engines
The axial flow compressor is preferred in aircraft gas turbines because of

Compressors, Gas Turbines and Jet Engines
The thrust of a jet propulsion power unit can be increased by

Compressors, Gas Turbines and Jet Engines
In a jet propulsion

Compressors, Gas Turbines and Jet Engines
The pressure ratio in gas turbines is of the order of

Compressors, Gas Turbines and Jet Engines
The efficiency of roots blower ________ with the increase in pressure ratio.