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Compressors, Gas Turbines & Jet Engines MCQ Question with Answer

Compressors, Gas Turbines & Jet Engines MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 50
Only rocket engines can be propelled to space because

They can generate very high thrust
They have high propulsion efficiency
These engines can work on several fuels
They are not air breathing engines
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Question No : 51
The maximum combustion pressure in gas turbine as compared to I.C. engine is

More
Less
Same
Depends on other factors
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Question No : 52
Standard air is the air at

Atmospheric conditions at any specific location
20°C and 1 kg/cm² and relative humidity 36%
0°C and standard atmospheric conditions
15°C and 1 kg/cm²
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Question No : 53
Pick up the wrong statement

Pulsejet requires no ambient air for propulsion
Ramjet engine has no turbine
Turbine drives compressor in a Turbojet
Bypass turbojet engine increases the thrust without adversely affecting, the propulsive efficiency and fuel economy
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Question No : 54
In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be

1 bar
16 bar
64 bar
256 bar
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Question No : 55
During peak load periods, the best method of controlling compressors is

Start-stop motor
Constant speed unloader
Relief valve
Variable speed
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Question No : 56
Maximum temperature in a gas turbine is of the order of

700°C
2000°C
1500°C
1000°C
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