Power Plant Engineering in EE - EEE Questions and Answers

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The effect of considering friction losses in steam nozzle for the same pressure ratio leads to

A.

increase in exit velocity from the nozzle

B.

decrease in exit velocity from the nozzle

C.

no change in exit velocity from the nozzle

D.

increase or decrease depending upon the exit quality of steam

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The effect of considering friction in steam nozzles for the same pressure ratio leads to

A.

increase in dryness fraction of exit steam

B.

decrease in dryness fraction of exit steam

C.

no change in the quality of exit steam

D.

decrease or increase of dryness fraction of exit steam depending upon inlet quality

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Carnot cycle comprises of

A.

two isentropic processes and two constant volume processes

B.

two isentropic processes and two constant pressure processes

C.

two isothermal processes and three constant pressure processes

D.

none of the above

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For the induced draught the fan is located

A.

near bottom of chimney

B.

near bottom of furnace

C.

at the top of the chimney

D.

anywhere permissible

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In India largest thermal power station is located at

A.

Kota

B.

Sarni

C.

Chandrapur

D.

Neyveli

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In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating

A.

Decreases with increase in Rankine cycle efficiency

B.

Increases with increase in Rankine cycle efficiency

C.

Is unaffected by increase in Rankine cycle efficiency

D.

None of the above

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For the safety of a steam boiler the number of safety valves fitted are

A.

four

B.

three

C.

two

D.

one

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The draught produced, for a given height of the chimney and given mean temperature of chimney gases

A.

decreases with increase in outside air temperature

B.

increases with increase in outside air temperature

C.

remains the same irrespective of outside air temperature

D.

may increase or decrease with increase in outside air temperature

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In a regenerative surface condenser

A.

There is one pump to remove air and condensate

B.

There are two pumps to remove air and condensate

C.

There are three pumps to remove air, vapor and condensate

D.

There is no pump; the condensate gets removed by gravity