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In DC current-excitation to transformer, why it sucks more current? Eventhough there is no power transfer between primary and secondary? R is very low so it should suck less current only na thn y its current increases?
2 5428inductance and capacitance may result in periodic reversals of the direction of energy flow,how???
1 3280For two systems transmitting the same amount of real power, the system with the lower power factor will have higher circulating currents due to energy that returns to the source from energy storage in the load.???
Bhel,
1905Post New Electrical Engineering Questions
1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve
how can i get the formula to find out the cable size if i know the load of main fuse protection.
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
How many points does a Circuit can have?
What are the factors influence the choice of an electrc drive?
What are the types of power in electrical power?
Where is servomechanism used?
Please define ohm’s law for a.c (alternating current)?
While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
Is there any standard guidelines/Criteria to design NGR/NGT.?
In EDO ACBs what is a purpose of closing coil and motor, what is the operation of these devices are they inetconnected. means if we give supply to motor and by BCS we charge Closing coil,what exact is operation is and how it charge a spring of ACB. Sir if anybody has an wiring diagram please send me the link to operate and EDO breaker.
how to find out cable size if load is 2800 watts, 230 volts AC supply and load distance is 1800 meters
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment
If the feeder rating is 7.5 kw or 10 HP star-delta feeder, MCCB is taken as 63 a, contactors-32 a, how much will be the OLR rating or which range OLR should be considered when we concern about type-2 coordination?
