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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
An air preheater is installed

None of these
Before the superheater
Before the economiser
Between the economiser and chimney

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially dry saturated steam is

0.582
0.601
0.546
0.577

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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

Feed pump
Feed check valve
Pressure gauge
Injector

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure at which latent heat of vaporisation is zero is

100 kgf/ cm²
225.65 kgf/ cm²
1 kgf/ cm²
273 kgf/ cm²

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Steam Boilers, Engines, Nozzles and Turbines
One kilowatt-hour energy is equivalent to

1000 J
3600 kW/sec
3600 kJ
360 kJ

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Steam Boilers, Engines, Nozzles and Turbines
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

Same
More
None of these
Less

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