Pressure Vessels and Engines MCQ with Answers

Pressure Vessels and Engines MCQ with Answers

61) More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than

Answer is:

2 kg/cm2

62) The advantage of multistage compression over single stage compression is

Answer is:

all of the above.

Explanation:

The advantage of multistage compression over single stage compression is
* lower power consumption per unit of air delivered
* higher volumetric efficiency
* decreased discharge temperature

63) Pick up the wrong statement about advantages of multistage compression

Answer is:

more loss of air due to leakage past the cylinder

64) As the value of index ′«′ is decreased, the volumetric efficiency will

Answer is:

decrease

65) The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

Answer is:

61) More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than

2 kg/cm2

62) The advantage of multistage compression over single stage compression is

all of the above.

63) Pick up the wrong statement about advantages of multistage compression

more loss of air due to leakage past the cylinder

64) As the value of index ′«′ is decreased, the volumetric efficiency will

decrease

65) The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

slip factor