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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
An economiser _________ the steam raising capacity of a boiler.

None of these
Has no effect on
Decreases
Increases

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Steam Boilers, Engines, Nozzles and Turbines
The action of steam in a steam turbine is

Static
Neither static nor dynamic
Static and dynamic
Dynamic

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Steam Boilers, Engines, Nozzles and Turbines
Thermal efficiency of a thermal power plant is of the order of

0.3
0.2
0.45
0.15

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Steam Boilers, Engines, Nozzles and Turbines
Lancashire boiler is

All of these
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler

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Steam Boilers, Engines, Nozzles and Turbines
Duplex feed pumps are used in small steam boilers. These operate on the principle of

Gear pump
Centrifugal pump
Reciprocating pump
Axial flow pump

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of steam turbines may be improved by

Reheating of steam
Binary vapor plant
Any one of these
Regenerative feed heating

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