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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Fusible plug for boilers is made of fusible metal containing tin, lead, and

Bismuth
Copper
Nickel
Aluminium

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

Static and dynamic
Neither static nor dynamic
Dynamic
Static

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Steam Boilers, Engines, Nozzles and Turbines
De-Laval turbines are mostly used

For small power purposes and low speeds
For large power purposes
For small power purposes and high speeds
Where low speeds are required

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Steam Boilers, Engines, Nozzles and Turbines
In forced circulation steam boilers, the force is applied

To drain off the water
All of these
To circulate water
To draw water

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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

Reciprocating pump
Axial flow pump
Centrifugal pump
Gear pump

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Steam Boilers, Engines, Nozzles and Turbines
The natural draught is produced by

Chimney
Steam jet
Centrifugal fan
Both (A) and (B)

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