Why is starter necessary for a three-phase induction motor?
- 37 Answers
- 168725 Views
- BMM, Essar, Hero MotoCorp, ITI, Maruti Suzuki, Supertech, Watt, I also Faced
- E-Mail Answers
Answer Posted / dhaval
1) The rotor of the three phase induction motor is act as a short circuit secondary while the stator winding is act as a primary winding of transformer.
2) Due to this, short circuited secondary, the current flowing through primary winding increases upto its 5 to 7 times the rated current for a few seconds.
3) Due to the increase in current, I2R losses are takes place in stator winding which results in overheating.
4) Similarly, it also reduces supply voltage at the time of starting.
5) Hence, in order to avoid this problems, starter is necessity for starting of induction motor.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How can a equal potential zone be carried out in conductors?
What is the angle of inclination for the oil connection from transformer conservator to Bucholz relay and why?
is it true there's a big difference in using Cummins or Denyo...especially power output or leakage
How many types of colling system it trformers?
1.why we are using metal oxide gapless block in lightning arrester,2.What is minimum and maximum rating of metal oxide blocks using in india
What is the Temperature to be set in Thermostat provided in Marshalling box of the Transformer / Motor.
What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?
Why is the air gap between the pole pieces and the armature kept very small?
If a high resistance fault occurs,then what are the changes will happen in the system?
we have 3 single phase transformers. how will we generate 6 supply from 3 phase supply input
What is a commutator?
can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)
what curve and rateing would you use for a three phase 0.75kw motor?
Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??
At what factor resistance r of a conductor depends?
