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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
An economiser is installed in a boiler primarily to

All of the listed here
Increase steam pressure
Reduce fuel consumption
Superheat the steam

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Steam Boilers, Engines, Nozzles and Turbines
A device used to increase the temperature of saturated steam without raising its pressure, is called

Stop valve
Fusible plug
Blow off cock
Superheater

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The velocity of steam at throat of the nozzle is __________ the velocity of sound.

Equal to
Less than
None of these
More than

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Steam Boilers, Engines, Nozzles and Turbines
All steam engines work on

First law of thermodynamics
None of the listed here
Second law of thermodynamics
Zeroth law of thermodynamics

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially wet steam is

0.546
0.582
0.601
0.577

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