Interested to Buy Any Domain ? << Click Here >> for more details...
Why, the starting current of 3 phase Induction Motor is 7
to 8 times its rated current?
- 9 Answers
- 36828 Views
- L&T, I also Faced
- E-Mail Answers
Answer Posted / roysayan01
From the equivalent circuit of an induction motor it can be
seen that the the expression of current is
I=E/[(jX1+R1)+(jX2+R2/s)
Generally during running condition slip,s=0.03
i.e the value of slip is very low which increases the
resistance (R2/s) in the above eqn and as a result of which
current decreases
but
at starting s=1 and so the resistance (R2/s) is small and
the current is 7 to 8 times higher than the current during
running condition.
Hope i explained it vividly.
For ny doubt or query feel free to mail me at
roysayan01@gmail.com
| Is This Answer Correct ? | 46 Yes | 2 No |
Post New Answer View All Answers
my bachelors was done with EEE now i got admit in NU with CS as course. how to answer this qns 1) why u choose cs? 2) why u changed from eee to cs
What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.
quantizer means?
Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?
What is gross error?
how does a submersible pump work..?
what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com
why impedance relay is used for medium transmission line protection
What is force on a conductor in a magnetic field ?
Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer?
My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible
wow to calculate the transformer rating(KVA)
what is residuel magnetism. and how order lead acid batteries for 24 volt. emergency lighting system.
What type of core material is used for metering C.T and protection C.T???
why is the conservator tank painted white on the transformer
