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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler

First increases and then decreases
Remain unaffected
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the isentropic heat drop to the heat supplied, is called

Reheat factor
Rankine efficiency
Internal efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.

None of these
Less
Same
More

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Steam Boilers, Engines, Nozzles and Turbines
The flow of steam is supersonic

At the entrance to the nozzle
In the convergent portion of the nozzle
In the divergent portion of the nozzle
At the throat of the nozzle

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Steam Boilers, Engines, Nozzles and Turbines
A steam nozzle converts

Kinetic energy into heat energy of steam
Heat energy of steam into kinetic energy
Heat energy of steam into potential energy
Potential energy into heat energy of steam

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Steam Boilers, Engines, Nozzles and Turbines
The cylindrical shell of a Lancashire boiler has diameter from

1.5 to 2.5 m
1.75 to 2.75 m
1.25 to 2.25 m
1 to 2 m

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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