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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a receiver type compound engine, the high pressure and low pressure cylinders

Are set at 90°
Have common piston rod
Are set in V-arrangement
Have separate piston rods

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Steam Boilers, Engines, Nozzles and Turbines
The balanced draft furnace is one using

Forced draft fan and chimney
Induced draft fan and chimney
Any one of the above
Induced draft fan and forced draft fan

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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

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

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Steam Boilers, Engines, Nozzles and Turbines
The effect of super-saturation is that the

Entropy and specific volume of the steam increases
Mass of the steam discharged increases
All of these
Exit velocity of steam reduces

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Steam Boilers, Engines, Nozzles and Turbines
The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)

cot²α
cos²α
sin²α
tan²α

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Steam Boilers, Engines, Nozzles and Turbines
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

4/3 kg
2 kg
1 kg
8/3 kg

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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