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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Steam turbines may be classified according to

Number of stages
Direction of steam flow
Mode of steam action
All of these

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam, as it flows over the blades in reaction turbine, represents

Isothermal process
Free expansion process
Throttling process
Isentropic process

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is not a boiler mounting?

Fusible plug
Economiser
Blow off cock
Feed check valve

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Steam Boilers, Engines, Nozzles and Turbines
The rate of steam produced in Benson boiler is

175 tonnes/h
250 tonnes/h
100 tonnes/h
135 tonnes/h

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Steam Boilers, Engines, Nozzles and Turbines
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.

Equal to
Greater than
None of these
Less than

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Steam Boilers, Engines, Nozzles and Turbines
Pulverized fuel is used for

Less radiation loss
Better burning
Medium sized units
More calorific value

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