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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A device used to increase the temperature of saturated steam without raising its pressure, is called

Blow off cock
Stop valve
Superheater
Fusible plug

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The effect of bleeding is that

Boiler is supplied with hot water
It decreases the power developed by the turbine
All of these
It increases the thermodynamic efficiency of the turbine

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Steam Boilers, Engines, Nozzles and Turbines
Efficiency of Rankine cycle can be increased by

Increasing the expansion ratio
Decreasing initial steam pressure and temperature
Increasing exhaust pressure
Decreasing exhausts pressure

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Steam Boilers, Engines, Nozzles and Turbines
The shell of the Cochran boiler is made hemispherical

To withstand the pressure of steam inside the boiler
None of these
Both (A) and (B)
To give maximum space and strength

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Steam Boilers, Engines, Nozzles and Turbines
Heating wet steam at constant temperature is heating it at constant

Pressure
Enthalpy
Volume
Entropy

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