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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In forced circulation steam boilers, the force is applied

All of these
To circulate water
To draw water
To drain off the water

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Steam Boilers, Engines, Nozzles and Turbines
Water tube boilers are those in which

Change in enthalpy
Water passes through the tubes and flue gases around it
Flue gases pass through tubes and water around it
Work is done during adiabatic expansion

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)

pa = pm/K
pa = K/pm
pa = pm × K
pa = pm + K

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Steam Boilers, Engines, Nozzles and Turbines
The average operating pressure of Benson boiler is

250 bar
100 bar
200 bar
150 bar

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

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Steam Boilers, Engines, Nozzles and Turbines
The length of Cornish boiler is of the order of

35 m
79 m
57.5 m
24 m

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