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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The diameter of a cylindrical shell of a Scotch marine boiler varies from

2.5 to 3.5 m
1.5 to 2 m
3.5 to 4.5 m
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Vacuum for reciprocating steam engines compared to steam turbines is

Less
More
Equal
Could be more or less depending on the size of plant

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Steam Boilers, Engines, Nozzles and Turbines
Green coal, in order to be burnt, must be

Burnt as powder
Burnt in excess air
Heated sufficiently
Heated to its ignition point

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Steam Boilers, Engines, Nozzles and Turbines
The fusible plug in small boilers is located

In the fire tubes
Above steam dome
Over the combustion chamber
In the drum

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off governing of steam engines is a method of controlling the engine output by varying

Volume of intake steam
Pressure of intake steam
All of these
Temperature of intake steam

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Steam Boilers, Engines, Nozzles and Turbines
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as

Natural circulation boiler
Forced circulation boiler
Internally fired boiler
Externally fired boiler

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