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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Heating of dry steam above saturation temperature is known as

Superheating
Super saturation
Enthalpy
Latent heat

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Steam Boilers, Engines, Nozzles and Turbines
For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine.

Twice
Three times
Four times
Equal to

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Steam Boilers, Engines, Nozzles and Turbines
The relative heat absorption for successively added equal areas of boiler convection heating surfaces

First increases and then decreases
Remain unaffected
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)

ηS = ηB × ηN
None of the listed here
ηS = ηN / ηB
ηS = ηB / ηN

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Steam Boilers, Engines, Nozzles and Turbines
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.

Equal
None of these
Less
More

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Steam Boilers, Engines, Nozzles and Turbines
The rate of steam produced in Benson boiler is

250 tonnes/h
135 tonnes/h
100 tonnes/h
175 tonnes/h

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