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Steam Boilers, Engines, Nozzles and Turbines

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

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

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Steam Boilers, Engines, Nozzles and Turbines
A steam nozzle converts

Heat energy of steam into kinetic energy
Heat energy of steam into potential energy
Potential energy into heat energy of steam
Kinetic energy into heat energy of steam

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Steam Boilers, Engines, Nozzles and Turbines
Reheating of steam under ideal conditions takes place at constant

Temperature
Pressure
Enthalpy
Entropy

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Steam Boilers, Engines, Nozzles and Turbines
The major axis of elliptical manholes on the shell should be provided

Longitudinally
Circumferentially
On dished end
Anywhere

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Steam Boilers, Engines, Nozzles and Turbines
Over fire burning is the phenomenon of

Supply of excess, air
Fuel bed firing
Supply of excess coal
Burning CO and unburnt in upper zone of furnace by supplying more air

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure gives the velocity of steam at the throat

Equal to the velocity of sound
None of these
Less than the velocity of sound
More than the velocity of sound

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