Mechanical Engineering - Steam Nozzles and Turbines

Exercise :: Steam Nozzles and Turbines - Section 2

36. 

The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam is called

A. blading efficiency
B. nozzle efficiency
C. stage efficiency
D. mechanical efficiency

Answer: Option C

Explanation:

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37. 

The diagram efficiency is the ratio of

A. workdone on the blades to the energy supplied to the blades
B. workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
C. energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
D. none of the above

Answer: Option A

Explanation:

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38. 

The Rankine efficiency depends upon total useful heat drop and total isentropic heat drop.

A. Correct
B. Incorrect

Answer: Option B

Explanation:

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39. 

Blading efficiency is also known as

A. stage efficiency
B. diagram efficiency
C. nozzle efficiency
D. none of these

Answer: Option B

Explanation:

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40. 

The pressure of steam, in reaction turbines, is reduced in the fixed blades as well as in moving blades.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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