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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The critical pressure gives the velocity of steam at the throat

More than the velocity of sound
Less than the velocity of sound
None of these
Equal to the velocity of sound

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Steam Boilers, Engines, Nozzles and Turbines
Water and sediment in fuel oil can be removed by

Burning the oil
Heating the oil in the settling tanks
Suspension
Cooling the oil in the settling tanks

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Steam Boilers, Engines, Nozzles and Turbines
On Mollier chart, flow through turbine is represented by

Curved line
Vertical straight line
Straight inclined line
Horizontal straight line

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Steam Boilers, Engines, Nozzles and Turbines
The specific volume of steam with increase in pressure decreases

Inversely
Slowly first and then rapidly
Linearly
Rapidly first and then slowly

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Steam Boilers, Engines, Nozzles and Turbines
In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

320/3 m/s
640/3 m/s
160/3 m/s
640 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The high steam and low water safety valve is not used in

Locomotive boiler
Cochran boiler
Lancashire boiler
Cornish boiler

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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