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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The velocity of steam at throat of the nozzle is __________ the velocity of sound.

Less than
None of these
Equal to
More than

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Steam Boilers, Engines, Nozzles and Turbines
The safety valve on boiler drum compared to safety valve on superheater is set at

Higher value
Lower/higher depending on steam flow
Lower value
Same value

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of internal flue tubes of a Lancashire boiler is about ___ that of its shell.

One-half
One-fourth
Two-fifth
One-third

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Steam Boilers, Engines, Nozzles and Turbines
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.

20 to 30%
30 to 40%
10 to 15%
15 to 20%

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Steam Boilers, Engines, Nozzles and Turbines
The forced circulation of water does not take place in

LaMont boiler
Velox boiler
Lancashire boiler
Benson boiler

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Dry
Remain dry saturated
Superheated
Wet

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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