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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The volume of air delivered in a medium capacity air compressor per unit time is

Above 5 m³/s
None of these
0.15 to 5 m³/s
0.1 to 1.2 m³/s

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Compressors, Gas Turbines and Jet Engines
Standard air is the air at

15°C and 1 kg/cm²
20°C and 1 kg/cm² and relative humidity 36%
Atmospheric conditions at any specific location
0°C and standard atmospheric conditions

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Compressors, Gas Turbines and Jet Engines
Gas turbine works on

Carnot cycle
Ericsson cycle
Brayton or Atkinson cycle
Rankine cycle

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Compressors, Gas Turbines and Jet Engines
The advantage of multistage compression over single stage compression is

Decreased discharge temperature
All of these
Lower power consumption per unit of air delivered
Higher volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
The indicated work per unit mass of air delivered is

Inversely proportional to clearance volume
Directly proportional to clearance volume
Not affected by clearance volume
Greatly affected by clearance volume

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Compressors, Gas Turbines and Jet Engines
The compressor efficiency is the

Compression work/motor input
Total output/air input
Isothermal H.P./shaft H.R
Isothermal H.P/indicated H.R

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