why the altrnator(AVR) not showing the any voltage after
making the new winding and insulation?
Answer Posted / raman jain
The Alternator shows small voltage when running on rated
speed and without excitation. This is due to the remanent
magnetization of the core of Alternator. After new winding
and insulation, the remanent magnetization no longer exists
and that is why it does not shows any voltage.
After initial voltage built up it attains the remanent
magnetization again.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What should be the percentage increase in length of the dead end clamp for bus bar conductor (Hawthorn) after hydraulic pressing and what should be the applied pressure?
if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer
What is meant by Low Resistance Cable and High Resistance Cable.
how can maintain the power factor and why and this is how do work tell us
what is inverter and converter
why should the lowest unit of a testing transformer ( cascaded transformer ) have higher power rating??
why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain
plz send me the placement interview question and answers of whizchip(technical and apttitude)..i have an interview in next.
Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.
how to discharge 3 phase power factor correction capacitors
for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?
what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.
How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?
we use capister for power factor. when we use capaciter in dg circuit than defect dg. can we use capaciter bank for dg circuit
I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field