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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ numbers of stages are required.

More
None of the listed here
Equal
Less

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of brake power to the indicated power is known as

Brake thermal efficiency
Indicated thermal efficiency
Mechanical efficiency
Overall efficiency

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Steam Boilers, Engines, Nozzles and Turbines
A single acting steam engine produces ___ power than that of double acting steam engine.

Four times
Equal
Double
Half

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Steam Boilers, Engines, Nozzles and Turbines
The relative heat absorption for successively added equal areas of boiler convection heating surfaces

First increases and then decreases
Decreases
Remain unaffected
Increases

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called

Nozzle efficiency
Blading efficiency
Mechanical efficiency
Stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly

2.86
10.05
1.05
6.65

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