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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl.

Increased
None of these
Zero
Reduced

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Compressors, Gas Turbines and Jet Engines
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be

None of the listed here
Forward curved
Radial
Backward curved

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Compressors, Gas Turbines and Jet Engines
A 3 m³/min compressor means that it

Compresses 3 m³/min of standard air
Delivers 3 m³/ min of compressed air
Delivers 3 m³/ min of compressed air at delivery pressure
Compresses 3 m³/ min of free air

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Compressors, Gas Turbines and Jet Engines
Efficiency of gas turbine is increased by

All of the listed here
Reheating
Inter cooling
Adding a regenerator

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Compressors, Gas Turbines and Jet Engines
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is

600 KW
15 KW
6000 KW
150 KW

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Compressors, Gas Turbines and Jet Engines
The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine is

Same
More
May be less or more depending on ambient conditions
Less

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