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Steam Boilers, Engines, Nozzles and Turbines

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

Dose chemicals in feed water
Pump feed water
Create vacuum at turbine exhaust
Create vacuum in furnace

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Steam Boilers, Engines, Nozzles and Turbines
The effect of friction in the nozzle ___ dryness fraction of steam.

None of the listed here
Has no effect on
Decreases
Increases

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Steam Boilers, Engines, Nozzles and Turbines
In locomotive boiler, maximum steam pressure is limited to

5 kg/cm²
18 kg/cm²
10 kg/cm²
1 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the useful heat drop to the isentropic heat drop is called

Boiler efficiency
Vacuum efficiency
Nozzle efficiency
Condenser efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The shell diameter and length of locomotive boiler are

1 m, 4 m
1.5 m, 4 m
1.5 m, 6 m
2 m, 4 m

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Steam Boilers, Engines, Nozzles and Turbines
When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as

Natural circulation boiler
Forced circulation boiler
Externally fired boiler
Internally fired boiler

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