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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as

Equivalent evaporation
Factor of evaporation
Power of a boiler
Boiler efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of Cornish boiler varies from

0.5 to 1 m
1 to 2 m
2 to 3 m
1.25 to 2.5 m

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

2 m
2.5 m
1 m
1.5 m

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Steam Boilers, Engines, Nozzles and Turbines
One kg of steam sample contains 0.8 kg dry steam? Its dryness fraction is

0.8
0.6
0.2
1

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.

Less
Same
More
None of these

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Steam Boilers, Engines, Nozzles and Turbines
100% efficiency of a thermal cycle cannot be achieved because of

Non availability of ideal substance
Frictional losses
It is not possible to achieve 0°K temperature
Leakage

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