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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A safety valve mainly used with locomotive and marine boilers is

Spring loaded safety valve
Dead weight safety valve
Lever safety valve
High steam and low water safety valve

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Steam Boilers, Engines, Nozzles and Turbines
The density of supersaturated steam is about __________ that of the ordinary saturated vapor at the corresponding pressure.

Same as
2 times
8 times
4 times

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Steam Boilers, Engines, Nozzles and Turbines
The length of shell of a Locomotive boiler is

3 m
2 m
4 m
1 m

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam, as it flows over the blades in reaction turbine, represents

Throttling process
Free expansion process
Isothermal process
Isentropic process

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Steam Boilers, Engines, Nozzles and Turbines
The value of the reheat factor varies from

1.6 to 2
1.2 to 1.6
1.02 to 1.06
1.08 to 1.10

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of brake power to the indicated power is known as

Brake thermal efficiency
Mechanical efficiency
Overall efficiency
Indicated thermal efficiency

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