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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are

Internally as well as externally fired
Externally fired
None of these
Internally fired

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Steam Boilers, Engines, Nozzles and Turbines
The length of Cornish boiler varies from

3 to 5 m
7 to 9 m
5 to 7.5 m
2 to 4.5 m

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Steam Boilers, Engines, Nozzles and Turbines
Proximate analysis of fuel is determination of percentage of

Fixed carbon, ash, volatile matter, moisture
Higher calorific value
Carbon, hydrogen, nitrogen, sulphur, moisture
Lower calorific value

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The feed check valve is used in order to

Regulate flow of boiler water
Check level of water in boiler drum
Recirculate unwanted feed water
Allow high pressure feed water to flow to drum and not allow reverse flow to take place

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Steam Boilers, Engines, Nozzles and Turbines
Feed water conditioning in thermal power plants in done to

Reduce hardness and for removal of solids
Increase heat transfer rate
Increase efficiency of thermal power plant
Increase steam parameters

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