can i have the methods of speed controls for 3 phase AC
MOTORS.
Answer Posted / manikanta kumar gopi
I think as per the answer of Mr.G.sreenivasalareddy
Frequency control method and Rheostatic method are same.am
i correct?
Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?
In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.
How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?
Explain what are inter-poles and why they are required in a dc machine.
what is the difference b/w absolute encoder and incremental encoder?
what is earthing.how we make it,describe briefly.
What is meant by system?
what is meant by class 1 E in electrical power supply?
what is per unit calculation?looking for simple and strong explanation thk u
Define damping ratio.
what is meant by twilight switches 7 where its applicable ?
how the speed of the gets motor regulated. does it draw the same current on the all speed level.
How do we find the rating of a transformer, if it got burnt badly.
how many joint can done in HT line and what is life of the joint
Z transform is use when system is not a) converges b) diverges