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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,

Velocity increases
Pressure remains constant
Velocity remains constant
Velocity decreases

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Steam Boilers, Engines, Nozzles and Turbines
The biggest size of thermal power unit operating in India is

60 MW
100 MW
500 MW
30 MW

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Steam Boilers, Engines, Nozzles and Turbines
When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

By-pass governing
Cut-off governing
Throttle governing
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler has __________ internal flue tubes.

Three
One
Four
Two

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Which device is used in thermal power plants to reduce level of pollution?

Chimney
Induced draft fan
Precipitator
Smoke meter

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