Answer Posted / suneetha
EDDY CURRENTS:
when a conductor kept in magnetic field
rotates an emf is induced in it.This emf sets up large
current in the body of the core bcoz of its low resistance
This current acc to lenz's law opposes the cause that is
producing it.This current is known as eddy current loss.
RMS:-
RMS of an a.c is that steady state current
(d.c) which when flowing thgh a given resistance for a givn
time produces the same heating effect as produced by the
a.c when flowing thgh the same resistance for the same time
all a.c meters are caliberated to read rms
value
Is This Answer Correct ? | 33 Yes | 3 No |
Post New Answer View All Answers
description about dry type transformers
How to calculate the phase to phase clearness of HT /// LT bus bar?????
What is the function of retrip in busbar?
sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.
why co incidence factor considered in transformer sizing?
If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.
Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?
What is the function of NER and NET?
I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF
State the points to be considered for selecting a particular type wiring.
What is the permissable nutral current of three phase system as per IS standards?
Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803
I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field
Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.
What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.