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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A jet engine has

No propeller
Propeller on the top
Propeller in front
Propeller at back

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

Increases power output
Reduces exhaust temperature
Improves thermal efficiency
Do not damage turbine blades

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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 × p₂
p₂ = p₁/p₃

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Compressors, Gas Turbines and Jet Engines
In jet engines the products of combustion after passing through the gas turbine are discharged into

Vacuum
Discharge nozzle
Back to the compressor
Atmosphere

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.

None of these
Inclined
Parallel
Perpendicular

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Compressors, Gas Turbines and Jet Engines
The ideal efficiency of simple gas turbine cycle depends on

All of these
Maximum cycle temperature
Minimum cycle temperature
Pressure ratio

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