Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:-

Electrical Machines
Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:-

1, 2 and 3.

2, 3 and 4.

1, 3 and 4.

2 and 4.

1, 2 and 3.

2, 3 and 4.

1, 3 and 4.

2 and 4.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The no load current in a transformer lags the applied voltage by

0°.

about 115°.

about 75°.

90°.

0°.

about 115°.

about 75°.

90°.

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Electrical Machines
If the back emf in DC motor vanishes suddenly the motor will

burn.

run at very high speed.

run at very low speed.

start haunting.

burn.

run at very high speed.

run at very low speed.

start haunting.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Breadth factor is defined as the ratio of

both 1 and 2.

emf with distributed winding to emf with concentrated winding.

None of these

emf with concentrated winding to emf with distributed winding.

both 1 and 2.

emf with distributed winding to emf with concentrated winding.

None of these

emf with concentrated winding to emf with distributed winding.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a 3 - φ induction motor running at full load which of these parameters is stationary with respect to the stator mmf wave?

Both rotor and stator winding.

Stator winding.

Rotor winding.

Rotor mmf wave.

Both rotor and stator winding.

Stator winding.

Rotor winding.

Rotor mmf wave.

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Electrical Machines
The back emf produced in a dc motor depends on

Z.

P and Z.

P.

none of these.

Z.

P and Z.

P.

none of these.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:-

Electrical Machines The no load current in a transformer lags the applied voltage by

Electrical Machines If the back emf in DC motor vanishes suddenly the motor will

Electrical Machines Breadth factor is defined as the ratio of

Electrical Machines In a 3 - φ induction motor running at full load which of these parameters is stationary with respect to the stator mmf wave?

Electrical Machines The back emf produced in a dc motor depends on

Electrical Machines
Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:-

Electrical Machines
The no load current in a transformer lags the applied voltage by

Electrical Machines
If the back emf in DC motor vanishes suddenly the motor will

Electrical Machines
Breadth factor is defined as the ratio of

Electrical Machines
In a 3 - φ induction motor running at full load which of these parameters is stationary with respect to the stator mmf wave?

Electrical Machines
The back emf produced in a dc motor depends on