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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The compounding of turbines is done in order to

Improve efficiency
Reduce speed of rotor
Reduce exit losses
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Caking coals are those which

Form lumps or masses of coke
Burn freely
Show little or no fusing action
Burn completely

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Steam Boilers, Engines, Nozzles and Turbines
The steam leaves the nozzle at a

Low pressure and a high velocity
Low pressure and a low velocity
High pressure and a low velocity
High pressure and a high velocity

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Steam Boilers, Engines, Nozzles and Turbines
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.

None of these
Equal to
Less than
Greater than

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Steam Boilers, Engines, Nozzles and Turbines
The high pressure boiler is one, which produces steam at a pressure more than

7580 kg/cm²
Atmospheric pressure
5 kg/cm²
10 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
The water tubes in a Babcock and Wilcox boiler are

Horizontal
Vertical
Horizontal and inclined
Inclined

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