A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

Electrical Machines
A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

24.11 kW.

25 kW.

23.06 kW.

26.21 kW.

24.11 kW.

25 kW.

23.06 kW.

26.21 kW.

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Electrical Machines
What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05?

0.05.

20.

0.905.

1.1.

0.05.

20.

0.905.

1.1.

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Electrical Machines
Semi closed slots or totally closed slots are used in induction motors, essentially to

improve starting torque

decrease starting torque

increase pull out torque

reduce magnetising current and improve power factor

improve starting torque

decrease starting torque

increase pull out torque

reduce magnetising current and improve power factor

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Electrical Machines
A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be

234 V

474 V

6 V

240 V

234 V

474 V

6 V

240 V

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Electrical Machines
The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________.

2.

8.

4.

6.

2.

8.

4.

6.

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Electrical Machines
In a synchronous motor electromagnetic power varies

inversely as applied voltage

None of these

directly as square of applied voltage

directly as applied voltage

inversely as applied voltage

None of these

directly as square of applied voltage

directly as applied voltage

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Electrical Machines

Electrical Machines A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05?

Electrical Machines Semi closed slots or totally closed slots are used in induction motors, essentially to

Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be

Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________.

Electrical Machines In a synchronous motor electromagnetic power varies

Electrical Machines
A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

Electrical Machines
What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05?

Electrical Machines
Semi closed slots or totally closed slots are used in induction motors, essentially to

Electrical Machines
A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be

Electrical Machines
The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________.

Electrical Machines
In a synchronous motor electromagnetic power varies