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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The best suited coal for chain or traveling grate stoker boiler is

High sulphur coal
Non-coking or free burning coal
Coking coal
Pulverized coal

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Steam Boilers, Engines, Nozzles and Turbines
Calorific value of coal is of the order of

800-1200 kcal/ kg
5000-8000 kcal/ kg
200-400 kcal/ kg
2000-4000 kcal/ kg

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Steam Boilers, Engines, Nozzles and Turbines
A fusible plug is fitted in small boilers in order to

Control steam dome
Avoid explosion
Extinguish fire if water level in the boiler falls below alarming limit
Avoid excessive build up of pressure

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Cochran boiler are

Inclined
Horizontal
None of these
Vertical

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Steam Boilers, Engines, Nozzles and Turbines
In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to

Superheater
Water space also
Steam space
Chimney

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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 90° to each other, is called

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

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