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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The evaporation of 15.653 kg of water per hour from and at 100°C is called

Equivalent evaporation
One boiler h.p.
Evaporative capacity
Factor of evaporation

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Steam Boilers, Engines, Nozzles and Turbines
When steam after doing work in the cylinder passes into a condenser, the engine is said to be a

Condensing steam engine
Slow speed engine
Vertical steam engine
Non-condensing steam engine

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Steam Boilers, Engines, Nozzles and Turbines
In a Woolf type compound engine, the high pressure and low pressure cylinders

Are set at 90°
Have common piston rod
Are set in V arrangement
Have separate piston rod

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Steam Boilers, Engines, Nozzles and Turbines
The maximum discharge of steam through a convergent-divergent nozzle depends upon

Final pressure of steam leaving the nozzle
Initial pressure and volume of steam
Both (A) and (B)
Area of nozzle at throat

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Steam Boilers, Engines, Nozzles and Turbines
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called

Chimney draught
Induced steam jet draught
Forced steam jet draught
None of these

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

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