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

Greater than

None of these

Equal to

Less than

Greater than

None of these

Equal to

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Compressors, Gas Turbines and Jet Engines
Which of the following plants is smallest and lightest for generating a given amount of power?

Diesel engine

Gas turbine plant

Petrol engine

Solar plant

Diesel engine

Gas turbine plant

Petrol engine

Solar plant

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Compressors, Gas Turbines and Jet Engines
The maximum compression ratio in an actual single stage axial flow compressor is of the order of

0.045138888888889

0.048611111111111

0.043055555555556

0.00070833333333333

0.045138888888889

0.048611111111111

0.043055555555556

0.00070833333333333

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Compressors, Gas Turbines and Jet Engines
For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p₂ is given by

p₂ = p₁. p₃

p₂ = Pa p₃/p₁

p₂ = (p₁ + p₃)/2

P₂ = Pa × p₃/p₁

p₂ = p₁. p₃

p₂ = Pa p₃/p₁

p₂ = (p₁ + p₃)/2

P₂ = Pa × p₃/p₁

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Compressors, Gas Turbines and Jet Engines
Standard air is the air at ___ and relative humidity of 36 percent.

0.1 bar and 40°C

1 bar and 20°C

0.1 bar and 20°C

1 bar and 40°C

0.1 bar and 40°C

1 bar and 20°C

0.1 bar and 20°C

1 bar and 40°C

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

None of these

Decreases

Does not change

Increases

None of these

Decreases

Does not change

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 Which of the following plants is smallest and lightest for generating a given amount of power?

Compressors, Gas Turbines and Jet Engines The maximum compression ratio in an actual single stage axial flow compressor is of the order of

Compressors, Gas Turbines and Jet Engines Standard air is the air at ___ and relative humidity of 36 percent.

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
Which of the following plants is smallest and lightest for generating a given amount of power?

Compressors, Gas Turbines and Jet Engines
The maximum compression ratio in an actual single stage axial flow compressor is of the order of

Compressors, Gas Turbines and Jet Engines
Standard air is the air at ___ and relative humidity of 36 percent.

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