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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The average value of diagram factor lies between

0.65 to 0.9
0.2 to 0.5
0.8 to 1.2
0.5 to 0.65

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become

Superheated
Dry
Wet
Remain dry saturated

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Steam Boilers, Engines, Nozzles and Turbines
With increase in load, convection superheater has

Linear characteristic
Rising characteristic
Flat characteristic
Drooping characteristic

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Steam Boilers, Engines, Nozzles and Turbines
If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

pa - ps
ps - pa
pa + ps
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The steam temperature with increase in load in case of a boiler fitted with radiation superheater

Remain unaffected
First increases and then decreases
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The friction present between the steam and the nozzle surfaces reduces the heat drop by

40 to 60%
10 to 15%
25 to 40%
15 to 25%

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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