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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
At very low temperature, the melting and boiling temperatures become equal. This temperature is

373°K
303°K
0°K
273.16°K

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Steam Boilers, Engines, Nozzles and Turbines
In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is

0.25
0.8
0.5
0.4

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Steam Boilers, Engines, Nozzles and Turbines
Water and sediment in fuel oil can be removed by

Suspension
Burning the oil
Heating the oil in the settling tanks
Cooling the oil in the settling tanks

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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

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

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in, a Coarran and Scottish marine boiler are

Vertical
Both horizontal and vertical
Inclined
Horizontal

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Steam Boilers, Engines, Nozzles and Turbines
A condenser in a steam power plant

Increases expansion ratio of steam
Reduces back pressure of steam
All of these
Reduces temperature of exhaust steam

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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