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

320/3 m/s

160/3 m/s

640 m/s

640/3 m/s

320/3 m/s

160/3 m/s

640 m/s

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Steam Boilers, Engines, Nozzles and Turbines
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

340 kg/h

210 kg/h

280 kg/h

150 kg/h

340 kg/h

210 kg/h

280 kg/h

150 kg/h

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Steam Boilers, Engines, Nozzles and Turbines
During polytropic process

Work is done

Steam may be wet, dry or superheated after expansion

Heat transfer takes place across cylinder walls

All of these

Work is done

Steam may be wet, dry or superheated after expansion

Heat transfer takes place across cylinder walls

All of these

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Steam Boilers, Engines, Nozzles and Turbines
The turbine blades are

Straight

None of these

Circular

Curved

Straight

None of these

Circular

Curved

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Steam Boilers, Engines, Nozzles and Turbines
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

Equal to

Less than

More than

None of the listed here

Equal to

Less than

More than

None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
Cut-off ratio is the ratio of

Swept volume to the volume at cut-off

Volume at cut-off to the clearance volume

Clearance volume to the volume at cut-off

Volume at cut-off to the swept volume

Swept volume to the volume at cut-off

Volume at cut-off to the clearance volume

Clearance volume to the volume at cut-off

Volume at cut-off to the swept volume

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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 A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

Steam Boilers, Engines, Nozzles and Turbines During polytropic process

Steam Boilers, Engines, Nozzles and Turbines The turbine blades are

Steam Boilers, Engines, Nozzles and Turbines In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

Steam Boilers, Engines, Nozzles and Turbines Cut-off ratio is the ratio of

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
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

Steam Boilers, Engines, Nozzles and Turbines
During polytropic process

Steam Boilers, Engines, Nozzles and Turbines
The turbine blades are

Steam Boilers, Engines, Nozzles and Turbines
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

Steam Boilers, Engines, Nozzles and Turbines
Cut-off ratio is the ratio of