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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In reaction turbines, the axial thrust is due to

None of these
Change in axial velocity
Pressure drop across the rotor
Both (A) and (B)

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Steam Boilers, Engines, Nozzles and Turbines
The actual power generated in the engine cylinder is called

Brake power
Indicated power
Frictional power
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)

V = 44.72 K hd
V = 44.72 K hd
V = 44.72 K hd
V = 44.72 hd K

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called

Woolf type compound engine
Tandem type compound engine
Receiver type compound engine
Both (A) and (B)

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

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

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Steam Boilers, Engines, Nozzles and Turbines
Vacuum for reciprocating steam engines compared to steam turbines is

Equal
Less
Could be more or less depending on the size of plant
More

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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