waht is the working principle of saft starter & what is the
difference in vfd & saft starter
Answer Posted / m.aqeel
in soft start we control the flux by taking v/hertz ratio
same.
flux directly propotional to v/f
and diffrence between vfd and softstart is only that in
soft start we just control motor in startion and in vfd
case we control motor at any time starting stopping etc
| Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
Differentiate between induced emf and self inductance?
what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????
neutral earth resistance testing is it possible for transformer while in load condition
what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA
what is the illumination level required for child play area?
i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester
How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?
A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.
take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????
HOW TO CALCULATE S/C,O/C,E/F OF ACB.
what is the transiant condition in alternator? and how it can be prevanted?
Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT
what is consequences of neutral and earth connect?
Give some example of fault limiting devices?
what is lumped and distributed elements?