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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Less than unity
Equal to unity
Greater than unity
None of these

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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.

Higher than
None of these
Equal to
Lower than

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of cylindrical shell of the Lancashire boiler is of the order of

1 to 1.75 m
1 to 1.25 m
1.75 to 2.75 m
2 to 4 m

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Steam Boilers, Engines, Nozzles and Turbines
The velocity of whirl at outlet for an axial discharge turbine is

Maximum
Minimum
Zero
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The heat balance sheet for the boiler shows the

All of these
Moisture present in the fuel
Steam formed by combustion of hydrogen per kg of fuel
Complete account of heat supplied by 1 kg of dry fuel and the heat consumed

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Steam Boilers, Engines, Nozzles and Turbines
The shell of the Cochran boiler is made hemispherical

To withstand the pressure of steam inside the boiler
To give maximum space and strength
None of these
Both (A) and (B)

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