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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A closed vessel made of steel and used for the generation of steam is called a

Steam condenser
Steam boiler
Steam injector
Steam turbine

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Steam Boilers, Engines, Nozzles and Turbines
The reheat factor is the ratio of the

Isentropic heat drop to the heat supplied
Total useful heat drop to the total isentropic heat drop
Cumulative heat drop to the isentropic heat drop
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the useful heat drop to the isentropic heat drop is called

Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle)

Vb = 0.5 V cosα
Vb = V² cosα
Vb = 0.5 V² cosα
Vb = V cosα

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has

Heating surface depends on other parameters
More heating surface
Less heating surface
Equal heating surface

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of heat utilized to produce steam and the heat liberated in furnace is known as

Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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