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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Stage efficiency is also known as

Nozzle efficiency
Gross efficiency
Diagram efficiency
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about the function of furnace?

Separate ash from coal
To provide proper conditions for continuous complete combustion
Mix fuel with air and ignite
Maintain heat supply to prepare and ignite the incoming fuel

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Steam Boilers, Engines, Nozzles and Turbines
The actual power supplied by the engine crankshaft is called

Brake power
Frictional power
Indicated power
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The velocity of steam at throat of the nozzle is __________ the velocity of sound.

Less than
More than
Equal to
None of these

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Steam Boilers, Engines, Nozzles and Turbines
In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be

296 kW
260 kW
302 kW
282 kW

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Steam Boilers, Engines, Nozzles and Turbines
Vacuum for reciprocating steam engines compared to steam turbines is

Less
Equal
Could be more or less depending on the size of plant
More

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