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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.

100°C
60°C
40°C
0°C

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Steam Boilers, Engines, Nozzles and Turbines
The maximum heat loss is a boiler occurs due to

Steam formation
Unburnt carbon
Moisture in fuel
Dry flue gases

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Steam Boilers, Engines, Nozzles and Turbines
The height of chimney in a power plant is governed by

Limitation of construction facilities
The draft to be created
Quantity of flue gases to be handled
Control of pollution

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Steam Boilers, Engines, Nozzles and Turbines
The high steam and low water safety valve is used to blow off steam when the

None of these
Steam pressure exceeds the working pressure
Water level in the boiler becomes too low
Both (A) and (B)

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Steam Boilers, Engines, Nozzles and Turbines
The number of water level indicators in a boiler are generally __________ in number.

Two
Four
Three
One

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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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