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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In order to reduce the rotor speed of an impulse turbine, the method employed is

All of these
Pressure compounding
Velocity compounding
Pressure-velocity compounding

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

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

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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
None of these
Equal to
More than

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Steam Boilers, Engines, Nozzles and Turbines
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.

More
Less
Equal
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Feed water conditioning in thermal power plants in done to

Increase heat transfer rate
Increase steam parameters
Increase efficiency of thermal power plant
Reduce hardness and for removal of solids

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Steam Boilers, Engines, Nozzles and Turbines
The basic purpose of drum in boiler is to

Separate steam from water
Serve as storage of feed water for water wall
Serve as storage of steam
Remove salts from water

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