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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Sulphur content of fuels is very important to the plant operators because it

Has highly corrosive effect
Promotes complete combustion
Has high heating value
Retards electric precipitation

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

Centrifugal fan
Steam jet
Chimney
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Multi-stage steam turbines are of the

All of these
Velocity compounded type
Pressure compounded type
Reaction type

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as

Efficiency of the boiler
Efficiency of the chimney
Power of the boiler
Efficiency of the fan

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of steam turbines may be improved by

Reheating of steam
Regenerative feed heating
Any one of these
Binary vapor plant

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Steam Boilers, Engines, Nozzles and Turbines
The natural draught is produced by

Both (A) and (B)
Centrifugal fan
Chimney
Steam jet

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