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Steam Boilers, Engines, Nozzles and Turbines

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

Equal to
None of these
Lower than
Higher than

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

Indicated thermal efficiency
Overall efficiency
Brake thermal efficiency
Mechanical efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The effect of super-saturation is that the

All of these
Mass of the steam discharged increases
Entropy and specific volume of the steam increases
Exit velocity of steam reduces

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Steam Boilers, Engines, Nozzles and Turbines
A boiler in India should conform to safety regulations of

ASTM
DIN
IBR
BS

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Steam Boilers, Engines, Nozzles and Turbines
Clearance ratio is the ratio of

Clearance volume to the swept volume
Volume at cut-off to the swept volume
Swept volume to the clearance volume
Clearance volume to the volume at cut-off

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Steam Boilers, Engines, Nozzles and Turbines
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

0.067 bar
0.053 bar
0.06 bar
0.007 bar

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