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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
An air preheater

Increases the efficiency of the boiler
All of these
Increases evaporative capacity of the boiler
Enables low grade fuel to be burnt

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Steam Boilers, Engines, Nozzles and Turbines
Size of boiler tubes is specified by

Inside diameter and thickness
Outside diameter and inside diameter
Outside diameter and thickness
Mean diameter and thickness

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Steam Boilers, Engines, Nozzles and Turbines
The actual power generated in the engine cylinder is called

Indicated power
Frictional power
None of these
Brake power

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Steam Boilers, Engines, Nozzles and Turbines
On Mollier chart, flow through turbine is represented by

Vertical straight line
Horizontal straight line
Curved line
Straight inclined line

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Steam Boilers, Engines, Nozzles and Turbines
The average value of diagram factor lies between

0.2 to 0.5
0.8 to 1.2
0.5 to 0.65
0.65 to 0.9

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Steam Boilers, Engines, Nozzles and Turbines
A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as

Impulse turbine
Low pressure turbine
Back pressure turbine
Pass out turbine

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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