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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The diameter of fire tubes in Cochran boiler is of the order of

2 cm
12 cm
8 cm
6 cm

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

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Steam Boilers, Engines, Nozzles and Turbines
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.

Stop valve
Safety valve
Fusible plug
Blow off cock

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of the plant __________ with the mechanical draught.

Decreases
None of these
Remains constant
Increases

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Steam Boilers, Engines, Nozzles and Turbines
In water wall furnace, the heat is transferred to the water walls by

Radiation and conduction
Radiation
Convection
Conduction

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

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

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