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Compressors, Gas Dynamics and Gas Turbines

51.

The degree of reaction is usually kept __________ for all types of axial flow compressors.

Answer: D

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52.

The efficiency of a jet engine is higher at

Answer: C

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53.

The minimum work required for a three stage reciprocating air compressor is __________ the work required for each stage.

Answer: D

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54.

In a centrifugal compressor, the ratio of the __________ to the blade velocity is called slip factor.

Answer: B

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Answer: A

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56.

The type of rotary compressor used in gas turbines, is of

Answer: B

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Answer: A

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58.

The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

Answer: B

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59.

In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

Answer: B

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60.

Standard air is the air at __________ and relative humidity of 36 percent.

Answer: A

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