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

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

640 m/s

320/3 m/s

160/3 m/s

640/3 m/s

640 m/s

320/3 m/s

160/3 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The evaporation of 15.653 kg of water per hour from and at 100°C is called

Evaporative capacity

Equivalent evaporation

Factor of evaporation

One boiler h.p.

Evaporative capacity

Equivalent evaporation

Factor of evaporation

One boiler h.p.

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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

Economiser

Steam preheater

Steam condenser

Steam boiler

Economiser

Steam preheater

Steam condenser

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Steam Boilers, Engines, Nozzles and Turbines
Expansion ratio is the ratio of

Clearance volume to the swept volume

Swept volume to the volume at cut-off

Swept volume to the clearance volume

Volume at cut-off to the swept volume

Clearance volume to the swept volume

Swept volume to the volume at cut-off

Swept volume to the clearance volume

Volume at cut-off to the swept volume

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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

Gross or stage efficiency

Nozzle efficiency

Blading efficiency

Mechanical efficiency

Gross or stage efficiency

Nozzle efficiency

Blading efficiency

Mechanical efficiency

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Steam Boilers, Engines, Nozzles and Turbines
An economiser is installed in a boiler primarily to

Increase steam pressure

Reduce fuel consumption

All of the listed here

Superheat the steam

Increase steam pressure

Reduce fuel consumption

All of the listed here

Superheat the steam

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Steam Boilers, Engines, Nozzles and Turbines

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

Steam Boilers, Engines, Nozzles and Turbines The evaporation of 15.653 kg of water per hour from and at 100°C is called

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 Boilers, Engines, Nozzles and Turbines Expansion ratio is the ratio of

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

Steam Boilers, Engines, Nozzles and Turbines An economiser is installed in a boiler primarily to

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

Steam Boilers, Engines, Nozzles and Turbines
The evaporation of 15.653 kg of water per hour from and at 100°C is called

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 Boilers, Engines, Nozzles and Turbines
Expansion ratio is the ratio of

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

Steam Boilers, Engines, Nozzles and Turbines
An economiser is installed in a boiler primarily to