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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

188 m/s
900 m/s
79 m/s
450 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The balanced draft furnace is one using

Induced draft fan and forced draft fan
Any one of the above
Induced draft fan and chimney
Forced draft fan and chimney

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Steam Boilers, Engines, Nozzles and Turbines
The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called

Natural draught
Balanced draught
Induced draught
Forced draught

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Steam Boilers, Engines, Nozzles and Turbines
Heating of dry steam above saturation temperature is known as

Superheating
Latent heat
Super saturation
Enthalpy

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Steam Boilers, Engines, Nozzles and Turbines
The length of Cornish boiler varies from

2 to 4.5 m
3 to 5 m
5 to 7.5 m
7 to 9 m

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Steam Boilers, Engines, Nozzles and Turbines
By compounding the expansion of steam in two or more cylinders, the length of stroke

None of these
Decreases
Increases
Does not change

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