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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Less than unity
None of these
Equal to unity
Greater than unity

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Steam Boilers, Engines, Nozzles and Turbines
An economiser _________ the steam raising capacity of a boiler.

None of these
Has no effect on
Decreases
Increases

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Steam Boilers, Engines, Nozzles and Turbines
A boiler in India should conform to safety regulations of

IBR
ASTM
BS
DIN

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

Power of a boiler
Boiler efficiency
Equivalent evaporation
Factor of evaporation

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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 evaporative capacity
Boiler efficiency
Factor of evaporation
Boiler effectiveness

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Steam Boilers, Engines, Nozzles and Turbines
The crown of the fire box is made hemispherical in order to

Give maximum strength
Resist intense heat in fire box
Withstand pressure inside boiler
Give maximum space

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