Mechanical Engineering - Compressors, Gas Dynamics and Gas Turbines

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Exercise :: Compressors, Gas Dynamics and Gas Turbines - Section 1

1. 

In a four stage compressor, if the pressure at the first and third stage are 1 bar and 16 bar, then the delivery pressure at the fourth stage will be

A. 1 bar
B. 16 bar
C. 64 bar
D. 256 bar

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

2. 

The compressed air may be used

A. in gas turbine plants
B. for operating pneumatic drills
C. in starting and supercharging of I.C. engines
D. all of the above

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

3. 

A rocket works with maximum overall efficiency when air-craft velocity is __________ the jet velocity.

A. equal to
B. one-half
C. double

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

4. 

The volumetric efficiency for reciprocating air compressors is about

A. 10 to 40%
B. 40 to 60%
C. 60 to 70%
D. 70 to 90%

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

5. 

The maximum temperature in a gas turbine is

A. 200°C
B. 500°C
C. 700°C
D. 1000°C

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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