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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The draught in locomotive boilers is produced by a

Steam jet
Centrifugal fan
Chimney
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The variation of steam pressure in the nozzle depends upon

Dryness fraction of steam
Specific volume of steam
Velocity of steam
All of these

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

None of these
Tandem type compound engine
Woolf type compound engine
Receiver type compound engine

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Steam Boilers, Engines, Nozzles and Turbines
O₂ content in atmospheric air on weight basis is

0.4
0.23
0.3
0.21

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the

Blade velocity coefficient is unity
Blade solidity is 0.65
Blades are equiangular
Blades are equiangular and frictionless

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