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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Boiler parameters are expressed by

Temperature of steam in °C
Pressure of steam in kg/cm²
All of these
Tonnes/hr. of steam

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

Blast furnace
Domestic use
Thermal power plant
Cement industry

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Steam Boilers, Engines, Nozzles and Turbines
In locomotives, the draught is produced by

Chimney
Steam jet draught
Induced draft fan
Both combined (A) and (B)

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Steam Boilers, Engines, Nozzles and Turbines
The shell of the Cochran boiler is made hemispherical

Both (A) and (B)
To give maximum space and strength
None of these
To withstand the pressure of steam inside the boiler

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of the plant __________ with the mechanical draught.

Increases
Remains constant
None of these
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

I.P. = b × m + a
m = (b/I.P.) - a
I.P. = a × m + b
m = a + b × I.P.

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