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:-

2, 3 and 4.

1, 2 and 3.

2 and 4.

1, 3 and 4.

2, 3 and 4.

1, 2 and 3.

2 and 4.

1, 3 and 4.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If Pi and Pc represent core and full load copper loss respectively, the maximum KVA delivered to load corresponding to maximum efficiency is equal to rated KVA is

Pc/Pi

(Pi/Pc)2

Pi/Pc

√(Pi/Pc)

Pc/Pi

(Pi/Pc)2

Pi/Pc

√(Pi/Pc)

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A DC generator can be considered as

prime mover.

rectifier.

power pump.

rotating amplifier.

prime mover.

rectifier.

power pump.

rotating amplifier.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3 - ÃŽÂ¦, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss?

1800 Watt.

1920 Watt.

980 Watt.

1960 Watt.

1800 Watt.

1920 Watt.

980 Watt.

1960 Watt.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 6 pole lap connected DC generator with 480 conductors has armature resistance of 0.06 Ω. If the conductors are reconnected to from a wave winding other things remaining unchanged, the value of armature resistance will be

0.06 Ω.

0.01 Ω.

0.54 Ω.

0.06 Ω.

0.01 Ω.

0.54 Ω.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Due to magnetic saturation, the flux per pole in a DC machine without brush shift

increases in both the generators and the motors with load.

decreases in generators and increases in motor with load.

decreases in both generators and the motors with load.

increases in generators but decreases in motor with load.

increases in both the generators and the motors with load.

decreases in generators and increases in motor with load.

decreases in both generators and the motors with load.

increases in generators but decreases in motor with load.

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 If Pi and Pc represent core and full load copper loss respectively, the maximum KVA delivered to load corresponding to maximum efficiency is equal to rated KVA is

Electrical Machines A DC generator can be considered as

Electrical Machines A 3 - ÃŽÂ¦, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss?

Electrical Machines A 6 pole lap connected DC generator with 480 conductors has armature resistance of 0.06 Ω. If the conductors are reconnected to from a wave winding other things remaining unchanged, the value of armature resistance will be

Electrical Machines Due to magnetic saturation, the flux per pole in a DC machine without brush shift

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
If Pi and Pc represent core and full load copper loss respectively, the maximum KVA delivered to load corresponding to maximum efficiency is equal to rated KVA is

Electrical Machines
A DC generator can be considered as

Electrical Machines
A 3 - ÃŽÂ¦, 6 pole, 50 Hz IM is running at a full load speed of 980 rpm. If it delivers an air gap power of 98000 Watt, calculate the rotor ohmic loss?

Electrical Machines
A 6 pole lap connected DC generator with 480 conductors has armature resistance of 0.06 Ω. If the conductors are reconnected to from a wave winding other things remaining unchanged, the value of armature resistance will be

Electrical Machines
Due to magnetic saturation, the flux per pole in a DC machine without brush shift