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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The friction present between the steam and the nozzle surfaces reduces the heat drop by

25 to 40%
15 to 25%
10 to 15%
40 to 60%

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Steam Boilers, Engines, Nozzles and Turbines
The condition of steam in boiler drum is always

Wet
Saturated
Dry
Supersaturated

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Water boils when its vapor pressure

Equals the pressure of water in the container
Equals 760 mm of mercury
Equals that of the surroundings
Equals to atmospheric pressure

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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.

Less
Same
None of these
More

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Steam Boilers, Engines, Nozzles and Turbines
The turbine blades are

Curved
Circular
None of these
Straight

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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