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Steam Boilers, Engines, Nozzles and Turbines

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

Boiler efficiency
Factor of evaporation
Power of a boiler
Equivalent evaporation

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Steam Boilers, Engines, Nozzles and Turbines
The relative heat absorption for successively added equal areas of boiler convection heating surfaces

Decreases
Increases
First increases and then decreases
Remain unaffected

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge through a chimney occurs when the height of chimney is

Infinitely long
Around 200 meters
Outside temperature is very low
Equal to the height of the hot gas column producing draught

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Steam Boilers, Engines, Nozzles and Turbines
The change in internal energy in steam engines equals to

Work done during the Rankine cycle
Change in enthalpy
Work done during adiabatic expansion
Work done during compression

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Steam Boilers, Engines, Nozzles and Turbines
The function of injector used in small capacity boilers is to

Pump water, similar to boiler feed pump
Inject chemical solution in feed pump
Create vacuum
Add make up water in the system

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Steam Boilers, Engines, Nozzles and Turbines
Evaporative capacity of boiler is expressed as

Steam pressure produced
kg of fuel fired
kg of steam produced
kg of steam produced per kg of fuel fifed

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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