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 m/s

640/3 m/s

320/3 m/s

160/3 m/s

640 m/s

640/3 m/s

320/3 m/s

160/3 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be

0.56

1.67

0.4

0.67

0.56

1.67

0.4

0.67

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Steam Boilers, Engines, Nozzles and Turbines
In an impulse turbine

The steam is expanded both in fixed and moving blades continuously

The steam is expanded in moving blades only

The pressure and temperature of steam remains constant

The steam is expanded in nozzles only and there is a pressure drop and heat drop

The steam is expanded both in fixed and moving blades continuously

The steam is expanded in moving blades only

The pressure and temperature of steam remains constant

The steam is expanded in nozzles only and there is a pressure drop and heat drop

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

Brake power

Frictional power

Indicated power

None of these

Brake power

Frictional power

Indicated power

None of these

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Steam Boilers, Engines, Nozzles and Turbines
The efficiency of a boiler is defined as

None of these

Ratio of the mass of steam produced to the mass of total water supplied in a given time

Ratio of heat actually used in producing steam to the heat liberated in the furnace

Ratio of the heat liberated in the furnace to the heat actually used in producing steam

None of these

Ratio of the mass of steam produced to the mass of total water supplied in a given time

Ratio of heat actually used in producing steam to the heat liberated in the furnace

Ratio of the heat liberated in the furnace to the heat actually used in producing steam

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

Reduces temperature of exhaust steam

Reduces back pressure of steam

All of these

Increases expansion ratio of steam

Reduces temperature of exhaust steam

Reduces back pressure of steam

All of these

Increases expansion ratio of 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 isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be

Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine

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

Steam Boilers, Engines, Nozzles and Turbines The efficiency of a boiler is defined as

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

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 isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be

Steam Boilers, Engines, Nozzles and Turbines
In an impulse turbine

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

Steam Boilers, Engines, Nozzles and Turbines
The efficiency of a boiler is defined as

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