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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
Equal
Less
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The water tubes in a simple vertical boiler are

Horizontal
Vertical
Inclined
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Remain dry saturated
Dry
Superheated
Wet

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Steam Boilers, Engines, Nozzles and Turbines
Throttle governing of steam engines is a method of controlling the engine output by varying

All of these
Pressure of intake steam
Temperature of intake steam
Volume of intake steam

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is required for a steam condensing plant?

All of these
Condenser
Air extraction pump
Condensate pump

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

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