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

160/3 m/s

640/3 m/s

320/3 m/s

640 m/s

160/3 m/s

640/3 m/s

320/3 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The reheat factor is the ratio of the

None of these

Total useful heat drop to the total isentropic heat drop

Cumulative heat drop to the isentropic heat drop

Isentropic heat drop to the heat supplied

None of these

Total useful heat drop to the total isentropic heat drop

Cumulative heat drop to the isentropic heat drop

Isentropic heat drop to the heat supplied

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Steam Boilers, Engines, Nozzles and Turbines
A wet vapor can be completely specified by

Dryness fraction only

Pressure and dryness fraction

Temperature only

Pressure only

Dryness fraction only

Pressure and dryness fraction

Temperature only

Pressure only

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Steam Boilers, Engines, Nozzles and Turbines
The effect of bleeding is that

It decreases the power developed by the turbine

Boiler is supplied with hot water

All of these

It increases the thermodynamic efficiency of the turbine

It decreases the power developed by the turbine

Boiler is supplied with hot water

All of these

It increases the thermodynamic efficiency of the turbine

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Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

More

Equal

Less

None of these

More

Equal

Less

None of these

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Steam Boilers, Engines, Nozzles and Turbines
A nozzle is said to be a divergent nozzle

None of these

When the cross-section of the nozzle decreases continuously from entrance to exit

When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit

When the cross-section of the nozzle increases continuously from entrance to exit

None of these

When the cross-section of the nozzle decreases continuously from entrance to exit

When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit

When the cross-section of the nozzle increases continuously from entrance to exit

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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 reheat factor is the ratio of the

Steam Boilers, Engines, Nozzles and Turbines A wet vapor can be completely specified by

Steam Boilers, Engines, Nozzles and Turbines The effect of bleeding is that

Steam Boilers, Engines, Nozzles and Turbines For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

Steam Boilers, Engines, Nozzles and Turbines A nozzle is said to be a divergent nozzle

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 reheat factor is the ratio of the

Steam Boilers, Engines, Nozzles and Turbines
A wet vapor can be completely specified by

Steam Boilers, Engines, Nozzles and Turbines
The effect of bleeding is that

Steam Boilers, Engines, Nozzles and Turbines
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.

Steam Boilers, Engines, Nozzles and Turbines
A nozzle is said to be a divergent nozzle