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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A binary vapor plant consists of

All of the listed here
Mercury boiler
Steam condenser
Steam turbine

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The biggest size of thermal power unit operating in India is

60 MW
100 MW
30 MW
500 MW

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Steam Boilers, Engines, Nozzles and Turbines
The Locomotive boiler has

167 fire tubes and 14 superheated tubes
157 fire tubes and 24 superheated tubes
137 fire tubes and 44 superheated tubes
147 fire tubes and 34 superheated tubes

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

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of flue tube in a Cornish boiler is _________ that of the shell.

One-fourth
Two-fifth
One-third
Three-fifth

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