Power Plant Engineering MCQ Questions & Answers | Electrical Engineering

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41.
Steam turbines are governed by the following methods

A. Throttle governing

B. Nozzle control governing

C. By-pass governing

D. all of the above

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42.
The cooling section in the surface condenser

A. increases the quantity of vapour extracted along with air

B. reduces the quantity of vapour extracted along with air

C. does not affect vapour quantity extracted but reduces pump capacity of air extraction pump

D. none of the above

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43.
The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is

A. 0.555

B. 0.578

C. 0.5457

D. 0.6

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44.
The draught in locomotive boilers is produced by

A. forced fan

B. chimney

C. steam jet

D. only motion of locomotive

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45.
The percentage 02 by volume in atmosphere air is

A. 21%

B. 23%

C. 77%

D. 79%

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