Mechanical Engineering - Steam Nozzles and Turbines

Exercise :: Steam Nozzles and Turbines - Section 2

11. 

In a single stage impulse turbine, the velocity of steam approaching nozzles is negligible.

A. True
B. False

Answer: Option A

Explanation:

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12. 

Curtis turbine is a

A. simple reaction turbine
B. velocity compounded turbine
C. pressure compounded turbine
D. pressure-velocity compounded turbine

Answer: Option D

Explanation:

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13. 

The velocity of steam at throat of the nozzle is __________ the velocity of sound.

A. equal to
B. less than
C. more than

Answer: Option A

Explanation:

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14. 

The critical pressure ratio for initially dry saturated steam is

A. 0.546
B. 0.577
C. 0.582
D. 0.601

Answer: Option B

Explanation:

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15. 

The discharge through a nozzle is maximum for a certain value of exit pressure. This pressure is known as critical pressure.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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