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Steam Boilers, Engines, Nozzles and Turbines

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The shell diameter and length of locomotive boiler are

1 m, 4 m
1.5 m, 6 m
2 m, 4 m
1.5 m, 4 m

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Calorific value of coal is of the order of

800-1200 kcal/ kg
2000-4000 kcal/ kg
200-400 kcal/ kg
5000-8000 kcal/ kg

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Steam Boilers, Engines, Nozzles and Turbines
The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is

Less
May be less or more depending on temperature
Equal
More

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Steam Boilers, Engines, Nozzles and Turbines
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called

Forced steam jet draught
None of these
Induced steam jet draught
Chimney draught

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