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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A binary vapor plant consists of

Mercury boiler
All of the listed here
Steam condenser
Steam turbine

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Steam Boilers, Engines, Nozzles and Turbines
Cochran boiler is a

Vertical water tube boiler
Horizontal fire tube boiler
Horizontal water tube boiler
Vertical fire tube boiler

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will

Boil
Remain as it was
Cool down
Flash i.e. get converted into steam

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

None of these
Inclined
Horizontal
Vertical

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Steam Boilers, Engines, Nozzles and Turbines
Primary air is the air used to

Transport and dry the coal
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone
Provide air around burners for obtaining optimum combustion
Air delivered by forced draft fan

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