why is used for starters for staring motors?
- 6 Answers
- 7613 Views
- Amrapali, L&T, I also Faced
- E-Mail Answers
Answer Posted / priya
Starters are used to limit high currents during starting by adding resistors in series with armature circuit which are excluded gradually when the motor speed increases. High starting currents are due to
1. In case of DC motor, initially back emf(E) is zero therefore I=(V-E)/Ra becomes V/Ra. Generally Ra armature circuit resistance is very low hence I is very high during starting. When speed increases back emf increases and I reduces therefore resistors can be excluded.
2. In synchronous motors starters are not used
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
in 132kv substation CRT means
what is difference between speed mode and torque mode in motor?? explain in simple words please.
what is meant by re-rolling motor? how it differs from standard motor?
if sf6 gas low in gis what will happen
what is the principle of operation of CFL ??
Explain and give examples about VCB?
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
What is your acheivements
How out of step protection relay works?
I want to know Electrical Circuit?
armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?
Which cable is use for rtcc control panel
On 400 amp factory load how kvarh capacitors provide
explain which quantities change in the starting and the and the running condition in induction motor
What is sensitivity of a measurement?
