The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

p₂ = p₁/p₃

p₂ = p₃/p₁

p₂ = p₁ × p₃

p₂ = p₁ × p₂

p₂ = p₁/p₃

p₂ = p₃/p₁

p₂ = p₁ × p₃

p₂ = p₁ × p₂

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Compressors, Gas Turbines and Jet Engines
The assumption made in two stage compression with inter-cooler is that

All of the listed here

The compression in both the cylinders is polytropic

There is no pressure drop in the inter-cooler

The suction and delivery of air takes place at constant pressure

All of the listed here

The compression in both the cylinders is polytropic

There is no pressure drop in the inter-cooler

The suction and delivery of air takes place at constant pressure

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Compressors, Gas Turbines and Jet Engines
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will

Decrease

Remain unaffected

Increase

Other factors control it

Decrease

Remain unaffected

Increase

Other factors control it

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Compressors, Gas Turbines and Jet Engines
Pick up the wrong statement about advantages of multistage compression

Mechanical balance is better

Better lubrication is possible advantages of multistage

More loss of air due to leakage past the cylinder

Air can be cooled perfectly in between

Mechanical balance is better

Better lubrication is possible advantages of multistage

More loss of air due to leakage past the cylinder

Air can be cooled perfectly in between

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Compressors, Gas Turbines and Jet Engines
High air-fuel ratio is used in gas turbines

To increase the output

To reduce the exit temperature

To increase the efficiency

To save fuel

To increase the output

To reduce the exit temperature

To increase the efficiency

To save fuel

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Compressors, Gas Turbines and Jet Engines
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

Thrust and range of aircraft

None of these

Both (A) and (B)

Efficiency of the engine

Thrust and range of aircraft

None of these

Both (A) and (B)

Efficiency of the engine

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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

Compressors, Gas Turbines and Jet Engines The assumption made in two stage compression with inter-cooler is that

Compressors, Gas Turbines and Jet Engines For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will

Compressors, Gas Turbines and Jet Engines Pick up the wrong statement about advantages of multistage compression

Compressors, Gas Turbines and Jet Engines High air-fuel ratio is used in gas turbines

Compressors, Gas Turbines and Jet Engines In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

Compressors, Gas Turbines and Jet Engines
The assumption made in two stage compression with inter-cooler is that

Compressors, Gas Turbines and Jet Engines
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will

Compressors, Gas Turbines and Jet Engines
Pick up the wrong statement about advantages of multistage compression

Compressors, Gas Turbines and Jet Engines
High air-fuel ratio is used in gas turbines

Compressors, Gas Turbines and Jet Engines
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the