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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.

60°
180°
90°
270°

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Steam Boilers, Engines, Nozzles and Turbines
Maximum energy loss in a boiler occurs due to

Unburnt carbon in ash
Incomplete combustion
Ash content
Flue gases

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of heat utilized to produce steam and the heat liberated in furnace is known as

Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency

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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

Fusible plug
Stop valve
Blow off cock
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following are boiler accessories?

Superheater
None of these
Economizer
Both (A) and (B)

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Steam Boilers, Engines, Nozzles and Turbines
Efficiency of a thermal cycle increases by

Both (A) and (B)
Reheating of steam
Cooling of steam
Regeneration

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