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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Thermal efficiency of a thermal power plant is of the order of

0.2
0.15
0.3
0.45

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Steam Boilers, Engines, Nozzles and Turbines
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called

Forced steam jet draught
None of these
Chimney draught
Induced steam jet draught

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of flue tube in a Cornish boiler is _________ that of the shell.

One-fourth
Three-fifth
One-third
Two-fifth

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Steam Boilers, Engines, Nozzles and Turbines
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

Remain same
None of these
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The function of injector used in small capacity boilers is to

Add make up water in the system
Create vacuum
Pump water, similar to boiler feed pump
Inject chemical solution in feed pump

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of steam turbines may be improved by

Binary vapor plant
Reheating of steam
Any one of these
Regenerative feed heating

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