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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The ratio of total useful heat drop to the total isentropic heat drop, is called

Stage efficiency
None of these
Internal efficiency
Rankine efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the workdone on the blades to the energy supplied to the blades, is called

Blading efficiency
Nozzle efficiency
Mechanical efficiency
Gross or stage efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of superheated tubes in a locomotive boiler is

130 mm
13 mm
230 mm
31 mm

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Steam Boilers, Engines, Nozzles and Turbines
When the nozzle operates with the maximum mass flow, the nozzle is said to be

Over-damping
None of these
Under-damping
Choked

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Steam Boilers, Engines, Nozzles and Turbines
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as

Steam boiler
Steam preheater
Steam condenser
Economiser

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

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

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