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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.

Fusible plug
Safety valve
Stop valve
Blow off cock

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Steam Boilers, Engines, Nozzles and Turbines
The length of Cornish boiler is of the order of

79 m
57.5 m
24 m
35 m

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Steam Boilers, Engines, Nozzles and Turbines
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.

Equal to
None of these
Higher than
Lower than

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Superheated
Remain dry saturated
Dry
Wet

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Steam Boilers, Engines, Nozzles and Turbines
Superheating of steam is done at

Constant volume
Constant entropy
Constant temperature
Constant pressure

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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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