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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

May improve/worsen depending on size
Improve
Worsen
Remain unaffected

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Steam Boilers, Engines, Nozzles and Turbines
The specific volume of steam with increase in pressure decreases

Inversely
Rapidly first and then slowly
Slowly first and then rapidly
Linearly

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Steam Boilers, Engines, Nozzles and Turbines
The clearance in the engine cylinder

Increases the mean effective pressure
Decreases the efficiency of the engine
Increases the workdone
All of these

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Steam Boilers, Engines, Nozzles and Turbines
Superheating of steam is done at

Constant entropy
Constant volume
Constant pressure
Constant temperature

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has

Heating surface depends on other parameters
Equal heating surface
More heating surface
Less heating surface

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are those in which

Tubes are laid vertically
Forced circulation takes place
Flue gases pass through tubes and water around it
Water passes through the tubes and flue gases around it

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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