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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Hygrometry deals with the

Water vapor in air
Hygroscopic substances
Pressure of air
Temperature of air

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Steam Boilers, Engines, Nozzles and Turbines
The radius of a dished head is taken approximately as

One fourth
Half
One
Two

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has

More heating surface
Equal heating surface
Heating surface depends on other parameters
Less heating surface

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Steam Boilers, Engines, Nozzles and Turbines
The chimney draught varies with

Height of chimney
All of these
Temperature of furnace gases
Climatic conditions

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Steam Boilers, Engines, Nozzles and Turbines
In a boiler, the heat is lost

To dry flue gases
In moisture present in the fuel
To steam formed by combustion of hydrogen per kg of fuel
All of these

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Steam Boilers, Engines, Nozzles and Turbines
The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate of the furnace is called

Forced steam jet draught
None of these
Chimney draught
Induced steam jet draught

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