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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The ratio of brake power to the indicated power is known as

Mechanical efficiency
Brake thermal efficiency
Indicated thermal efficiency
Overall efficiency

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Steam Boilers, Engines, Nozzles and Turbines
In a Woolf type compound engine, the high pressure and low pressure cylinders

Are set at 90°
Have common piston rod
Are set in V arrangement
Have separate piston rod

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Steam Boilers, Engines, Nozzles and Turbines
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as

Air-preheater
Injector
Superheater
Economizer

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as

Injector
Feed check valve
Feed pump
Pressure gauge

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are limited to a maximum working pressure of

0.17 MN/m²
1.7 MN/m²
170 MN/m²
17 MN/m²

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Steam Boilers, Engines, Nozzles and Turbines
A safety valve usually employed with stationary boilers is

All of the listed here
Dead weight safety valve
High steam and low water safety valve
Lever safety valve

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