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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Less than unity
Greater than unity
Equal to unity
None of these

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

None of these
Woolf type compound engine
Tandem type compound engine
Receiver type compound engine

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

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Steam Boilers, Engines, Nozzles and Turbines
The number of water level indicators in a boiler are generally __________ in number.

Three
Four
Two
One

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

cot²α
tan²α
cos²α
sin²α

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine, when steam flows through the fixed blades,

Pressure and velocity both increases
Pressure decreases while velocity increases
Pressure and velocity both decreases
Pressure increases while velocity decreases

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