In all the generators, the excitation supply is DC. What is
the significance of DC excitation? What will happen if AC
supply is given as excitation supply?
Answer Posted / don
THERE WILL BE NO DEFINITE POLES IN ROTOR,ALSO THE EDDY
CURRENT LOSSE WILL BE MORE IF AC IS GIVEN AS EXCITATION.
| Is This Answer Correct ? | 1 Yes | 4 No |
Post New Answer View All Answers
what is plunger and what's the use of it in motor alignment?
why we are not giving the zone 1 trip command to the master trip relay
what is the value of combined earthing in general electrical circiut?
What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?
We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.
Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?
In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem
i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh
A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
What is the formula to find out two phase active & reactive power
Why do not we prefer non conventional sources of energy to conventional sources?
can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)
how to handle 2500 kva transformar
how to calculate the torque of a motor?
Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.