Interested to Buy Any Domain ? << Click Here >> for more details...
What is dc induction motor ? and how to control its speed ?
- 1 Answers
- 4336 Views
- HAL, I also Faced
- E-Mail Answers
Answer Posted / engr. kashif
Induction motors are AC motors and they rely on the principle of Induction thus called induction motors. The stator is given a three phase supply and with the help of the revolving magnetic field produced by it, current is induced in the rotor. This then itself generates a magnetic field opposite to the one generated by the stator. These two fields react with each other to produce rotor movement.
Speed may be controlled either by varying input frequency or by changing the no. of poles of the motor. Obviously changing the no. of poles of the motor is not possible unless u alter the motor design or its a specialized multi winding motor. So we have to settle for the other option i.e. change the input frequency. This can be accomplished with the help of VFD (Variable Frequency Drives). They allow u to control the input frequency and thus the speed of the motor.
| Is This Answer Correct ? | 10 Yes | 2 No |
Post New Answer View All Answers
What is the necessary condition for stability.
Whether amorphous core transformer is commercialized or not:Name of company making amorphous core transformer and what are different rating?
WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?
Why r u using pf panel. what the uses
Difference between drift current and diffusion current?
what is there inside an inverter and how it works?
why and how voltage sharing in transformer, during magnetic balance test ?
bus bar design conditions and sizing pls tell me quickly
what is reactive power?, why its measured in VA ? is it transient behavior of system?
Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?
hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?
What is CCT (Correlated Color Temperature) ?
What is the actual calculation for transformer short circuit test?.
What is the Minimum winding resistance of motors ( small & big)? referance range
What is grid collapse? what is the reason for it?
