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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,

Pressure remains constant
Velocity remains constant
Velocity decreases
Velocity increases

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

Rankine efficiency
None of these
Internal efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The coal requirement per kW hour generation in the thermal power plant is of the order of

0.1 to 0.2 kg
0.2 to 0.4 kg
0.6 to 0.8 kg
1.0 to 1.5 kg

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Steam Boilers, Engines, Nozzles and Turbines
In an impulse reaction turbine, the pressure drops gradually and continuously over

None of these
Fixed blades
Both fixed and moving blades
Moving blades

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Steam Boilers, Engines, Nozzles and Turbines
A valve installed between the boiler and the feed pump is

None of these
Steam stop valve
Blow off cock
Feed check valve

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Steam Boilers, Engines, Nozzles and Turbines
The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as

Feed pump
Feed check valve
Injector
Pressure gauge

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