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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The draught in locomotive boilers is produced by a

Steam jet
None of these
Centrifugal fan
Chimney

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Steam Boilers, Engines, Nozzles and Turbines
In an impulse reaction turbine, the pressure drops gradually and continuously over

Fixed blades
Moving blades
None of these
Both fixed and moving blades

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Steam Boilers, Engines, Nozzles and Turbines
A supercritical boiler is one that operates above the pressure and temperature of following values

218 kg/cm² abs and 373°C
218 kg/cm² abs and 540°C
1 kg/cm² and 100°C
100 kg/cm² and 540°C

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Steam Boilers, Engines, Nozzles and Turbines
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

8/3 kg
4/3 kg
1 kg
2 kg

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Steam Boilers, Engines, Nozzles and Turbines
Water and sediment in fuel oil can be removed by

Burning the oil
Heating the oil in the settling tanks
Suspension
Cooling the oil in the settling tanks

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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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