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Steam Boilers, Engines, Nozzles and Turbines

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

Less
More
None of these
Equal

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Steam Boilers, Engines, Nozzles and Turbines
When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by

None of these
(h - hf1)/2257
(h × hf1)/2257
(h + hf1)/2257

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Steam Boilers, Engines, Nozzles and Turbines
Pulverized fuel is used for

Better burning
More calorific value
Less radiation loss
Medium sized units

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Steam Boilers, Engines, Nozzles and Turbines
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is

0.053 bar
0.007 bar
0.06 bar
0.067 bar

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Steam Boilers, Engines, Nozzles and Turbines
The specific volume of steam with increase in pressure decreases

Linearly
Slowly first and then rapidly
Rapidly first and then slowly
Inversely

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Steam Boilers, Engines, Nozzles and Turbines
The clearance in the engine cylinder

Increases the mean effective pressure
Decreases the efficiency of the engine
All of these
Increases the workdone

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