The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?
Answer Posted / sethu
L = L1 + L2 ± 2M.
When ordinary, L = L1 + L2 + 2M
∴ 40 = 10 + 15 + 2M.
∴ 2M = 15 mH
When opposing, L = L1 + L2 – 2M
= 10 + 15 – 15 = 10 mH
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Vibromotor 252MV 1/4HP2P..what is mean by 252MV?
what r the safety measures in UPS ? explain all?
why core is useful for a transformer ?and also in its operation ?
why sielent pole is used only in hydro generators and not in turbo generators
Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?
What is the most important precaution in any experiment with d.c. Shunt motor?
star delta starter contorl circuit... drawing..
what are the protecyion of transformer & generators
What is core CT & it's function?
Why GRR starts from 60% of motor speed why not less than 60%?
what is the star delta connetion and how can do it a three phase motor with control witing with picture
Why two phase welding machine is used instead of three phase welding machine.
What are locations arc protection relay is fixed.
for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv
i am venkat i got gre 930(verbal 270 quanta 660) and my toefl score 105..here question is why u got less score in gre ? what i supposed to tell...any chance of rejection is there...my accadamics record is very good