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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The work done per unit mass of air in compression will be least when 'n' is equal to

1.3
1
1.2
1.4

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Compressors, Gas Turbines and Jet Engines
The maximum temperature in a gas turbine is

500°C
700°C
200°C
1000°C

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

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

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Compressors, Gas Turbines and Jet Engines
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

Degree of reaction
Pressure coefficient
Pressure ratio
Slip factor

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Compressors, Gas Turbines and Jet Engines
The efficiency of the vane blower is (where W₁ = Workdone due to compression, and W₂ = Workdone due to back flow)

W₁/(W₁ + W₂)
(W₁ + W₂)/W₂
(W₁ + W₂)/W₁
W₂/(W₁ + W₂)

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Compressors, Gas Turbines and Jet Engines
Open cycle gas turbine works on

Carnot cycle
Rankine cycle
Ericsson cycle
Brayton or Atkinson cycle

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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