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|What is the relation of current with torque when motor
started in Y-connection???
|What is BKW of Motor. And what its significance
|AP Transco Assistant Engineer (Electrical) Model Question
|I have a question, I visit 01 site and face a problem,
there is 2.5 ton Air Con working, when air con compressor
is running at that time rectifier voltages are increasing
upto 290-295 v and rectifier is giving main high alarm
(rectifier is APC single phase), before starting compressor
rectifier voltages was 230v. when air con is going off
rectifier voltages are decreasing smoothly at its actual
Load on Genset phases is this: Red-13.5 amp AC (Air Con
load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp
AC (telecom system load),
Genset phase to phase and neutral to phase voltages are
These are 10 sites having same system and same rectifier
APC brand at every site 02 genset are working but the
problem is same at all these 10 sites.
What will be the reason behind???
|Alternators are invariably star connected why?
|define electrical field?
|is there or does RCCB work for single phase connection?
|Why C.T secondary s2 done earthing?
|when we start the tube light, then it takes initially 1100
volt, after glow it takes 120 volt?(when we give 220 volt a.c.)
|why the rating of transformer in only KVA not in others?
|what is the current rating of 2500 KVA,33KV/433v transformer
on secondary(LT) side
|why the field winding of synchronous machine is excited by dc source
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