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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Hard coke is used in

Blast furnace
Thermal power plant
Cement industry
Domestic use

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge through a chimney occurs when the height of chimney is

Infinitely long
Around 200 meters
Outside temperature is very low
Equal to the height of the hot gas column producing draught

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

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

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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

Mechanical efficiency
Stage efficiency
Blading efficiency
Nozzle efficiency

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Steam Boilers, Engines, Nozzles and Turbines
Thermal efficiency of a thermal power plant is of the order of

0.45
0.15
0.2
0.3

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Steam Boilers, Engines, Nozzles and Turbines
When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be

None of these
Choked
Under-damping
Over-damping

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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