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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The forced circulation of water does not take place in

Lancashire boiler
LaMont boiler
Velox boiler
Benson boiler

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Steam Boilers, Engines, Nozzles and Turbines
Presence of moisture in fuel oil would

Aid in proper combustion
Because sputtering, possibly extinguishing flame
Keep the burner tips cool
Clean the nozzles

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

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

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Steam Boilers, Engines, Nozzles and Turbines
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

Superheater
Stop valve
None of these
Blow off cock

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Steam Boilers, Engines, Nozzles and Turbines
Thermal efficiency of a thermal power plant is of the order of

0.2
0.3
0.15
0.45

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Steam Boilers, Engines, Nozzles and Turbines
The economiser is used in boilers to

Increase flue gas temperature
Increase thermal efficiency of boiler
Extract heat from the exhaust flue gases
Economize on fuel

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