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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The rate of discharge through the nozzle ___ when the exit pressure is gradually reduced.

Remains same
None of the listed here
Decreases
Increases

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Steam Boilers, Engines, Nozzles and Turbines
The diameters of fire tubes and superheater tubes in locomotive boiler are

32.5 mm, 180 mm
24.5 mm, 65 mm
65.5 mm, 210 mm
47.5 mm, 130 mm

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following boiler works on a forced circulation of water?

Loeffler boiler
All of these
Benson boiler
Lamont boiler

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Steam Boilers, Engines, Nozzles and Turbines
On Millier chart, the constant pressure lines

First rise up and then fall
Diverge from left to right
Diverge from right to left
Are equally spaced throughout

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Steam Boilers, Engines, Nozzles and Turbines
When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by

(h - hf1)/2257
(h × hf1)/2257
(h + hf1)/2257
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The fire tubes in a Cochran boiler are

None of these
Inclined
Horizontal
Vertical

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