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Steam Boilers, Engines, Nozzles and Turbines

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

Two
One
One fourth
Half

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Steam Boilers, Engines, Nozzles and Turbines
Expanding steam to a very low pressure (high vacuum) in steam engines is

Desirable
Essential
Economical
Uneconomical

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Steam Boilers, Engines, Nozzles and Turbines
Presence of moisture in fuel oil would

Because sputtering, possibly extinguishing flame
Aid in proper combustion
Clean the nozzles
Keep the burner tips cool

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Steam Boilers, Engines, Nozzles and Turbines
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.

Remain same
Decreases
None of these
Increases

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Steam Boilers, Engines, Nozzles and Turbines
With increase in load, radiant superheater has

Flat characteristic
Linear characteristic
Drooping characteristic
Rising characteristic

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Steam Boilers, Engines, Nozzles and Turbines
Heating wet steam at constant temperature is heating it at constant

Enthalpy
Pressure
Volume
Entropy

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