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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Latent heat of dry steam at atmospheric pressure is equal to

100 kcal/ kg
427 kcal/ kg
539 BTU/ lb
539 kcal/ kg

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off governing as compared to throttle governing is

More efficient and more economical
More efficient and less economical
Less efficient and less economical
Less efficient and more economical

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the clearance volume to the swept volume is called

Clearance ratio
Cut-off ratio
Expansion ratio
None of these

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

More
Equal
Less
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler is of

Natural circulation type
Horizontal type
Stationary < fire tube type
All of the listed here

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

Below atmospheric pressure
225.6 kg/cm²
100 kg/cm²
1 kg/cm²

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