why does chattering take place in ac contactors? can it be avoided & what care does the manufacturer take to eliminate this phenomenon????
10 53017what will happen if the bus PT fuses are accidently removed from the circuit in 6.6kV feeder?
1 4460why is it that the HT motors & motors having very low kW rating(<1kW) have windings connected in STAR, whereas the motors having in between kW ratings have DELTA connected windings??
5 8562which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?
1492How maesure earth neutral value & how much maximum value value required in between earth & neutral.
1575THE 40 MW OF POWER FOR 220 V III PHASE POWER CONNECTION REQUIRES HOW MANY KVA POWEER REQUIREMENTS
7 8883In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?
1469Post New Electrical Engineering Questions
hi frds, i m electrical engineer.can i get cdr for electrical engineer if u have then send me on my mail id its jayesh_ee88@yahoo.com.please help me frds
A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
how to calculate singlephase motor efficiency?
What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?
How many types oil using in transformer ? How many letars using in transformer..?
how to calculate vfd o/p voltage by frequency
Transmission through a short line depends on
What are the special cables required for explosion proof wiring?
what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?
one split ac how can told of this ac which Tr tell me us
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
What we mean by vintage of an engine+Generator?
are there rmu for 3 transformer?
I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....
What is error of a measurement?
