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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

Increases
None of these
Decreases
Remains constant

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Steam Boilers, Engines, Nozzles and Turbines
The performance of a boiler is measured by the

Steam produced in kg/h
Amount of water evaporated per hour
Steam produced in kg/kg of fuel burnt
All of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The safety valve at superheater as compared to drum safety valve setting is set at

Same value
Higher value
Lower value
Any value

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Steam Boilers, Engines, Nozzles and Turbines
The reheat factor is the ratio of the

None of these
Cumulative heat drop to the isentropic heat drop
Isentropic heat drop to the heat supplied
Total useful heat drop to the total isentropic heat drop

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Steam Boilers, Engines, Nozzles and Turbines
Film boiling occurs at

Very high pressures
Very low pressure
Medium pressures
Atmospheric pressures

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached to two different cranks set at 180° to each other, is called

Woolf type compound engine
Both (A) and (B)
Tandem type compound engine
Receiver type compound engine

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