Why, the starting current of 3 phase Induction Motor is 7
to 8 times its rated current?
Answer Posted / vinay singh
the air gap path provide more reluctance path to the mutual
flux but mutual flux is constant due to constant applied
voltage. so for constant mutual flux the magnetising m.m.f.
is more and stator draws more magnetising current during
starting.
| Is This Answer Correct ? | 5 Yes | 3 No |
Post New Answer View All Answers
How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?
Explain the advantages and disadvantages of hydropower plant?
What are the effects of electrical faults?
What Should be the value of Vector Surge angle at Tripping and how to calculate it?
what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks
what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated
aternator every parts and its working
wow to calculate the transformer rating(KVA)
what is the difference between interconnection and intraconnections in the circuit diagrams
what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?
What do you mean by pull of electromagnet?
What is the use of bundle conductors?
Give atleast 20 alternating current apparatus and devices.
What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current
how many joints are allowed in underground HT cable of 1 KM