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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as

Fusible plug
Blow off cock
Stop valve
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

0.63
0.78
0.74
0.56

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following boiler is best suited to meet the fluctuating demand of steam?

Cornish boiler
Locomotive boiler
Babcock and Wilcox boiler
Lancashire boiler

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Steam Boilers, Engines, Nozzles and Turbines
A closed vessel made of steel and used for the generation of steam is called a

Steam boiler
Steam injector
Steam turbine
Steam condenser

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as

Pressure gauge
Feed check valve
Feed pump
Injector

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Steam Boilers, Engines, Nozzles and Turbines
Steam exhaust from high pressure turbine is reheated in

Superheater tubes
Economizer
A separate coil located in convection path
Boiler drums

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