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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Steam turbines are used for

Direct drive of fans, compressors, pumps
All of these
Large marine propulsion
Electric power generation

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The steam enters the nozzle at a

Low pressure and a low velocity
Low pressure and a high velocity
High pressure and a high velocity
High pressure and a low velocity

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Steam Boilers, Engines, Nozzles and Turbines
If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

None of these
ps - pa
pa + ps
pa - ps

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

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

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

Boiler efficiency
Condenser efficiency
Vacuum efficiency
Nozzle efficiency

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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