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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A closed vessel made of steel and used for the generation of steam is called a

Steam turbine
Steam injector
Steam condenser
Steam boiler

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Steam Boilers, Engines, Nozzles and Turbines
An economiser is generally placed between

None of these
Last superheater or reheater and air preheater
Air preheater and chimney
Induced draft fan and forced draft fan

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Steam Boilers, Engines, Nozzles and Turbines
Steam turbines may be classified according to

All of these
Mode of steam action
Number of stages
Direction of steam flow

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Steam Boilers, Engines, Nozzles and Turbines
Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of

Raising of steam temperature
High calorific value coal being burnt
Higher effectiveness of boiler
Fouling of heat transfer surfaces

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Steam Boilers, Engines, Nozzles and Turbines
One kilowatt-hour energy is equivalent to

360 kJ
3600 kJ
1000 J
3600 kW/sec

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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
Remains constant
Decreases

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