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Steam Boilers, Engines, Nozzles and Turbines

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler tank (iii) Superheater (iv) Economizer (v) Air-heater of a typical boiler of 200 MW capacity would be of the order of

48 : 20 : 15 : 7 : 10
20 : 48 : 7 : 15 : 10
10 : 7 : 15 : 20 : 48
7 : 15 : 20 : 10 : 48

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Steam Boilers, Engines, Nozzles and Turbines
The friction in the nozzle __________ exit velocity of steam.

Decreases
None of these
Has no effect on
Increases

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following are boiler accessories?

None of these
Both (A) and (B)
Economizer
Superheater

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Steam Boilers, Engines, Nozzles and Turbines
Multi-stage steam turbines are of the

Pressure compounded type
Reaction type
Velocity compounded type
All of these

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

Boiler efficiency
Condenser efficiency
Vacuum efficiency
Nozzle efficiency

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