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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly

1.05
6.65
2.86
10.05

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

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

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Steam Boilers, Engines, Nozzles and Turbines
The diameters of fire tubes and superheater tubes in locomotive boiler are

47.5 mm, 130 mm
24.5 mm, 65 mm
65.5 mm, 210 mm
32.5 mm, 180 mm

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Steam Boilers, Engines, Nozzles and Turbines
A condenser in a steam power plant

Reduces back pressure of steam
Reduces temperature of exhaust steam
All of these
Increases expansion ratio of steam

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Steam Boilers, Engines, Nozzles and Turbines
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler

Increases
First increases and then decreases
Remain unaffected
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
The steam leaves the nozzle at a

Low pressure and a high velocity
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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