Why DC excitation is used for alternators? Why cant it be AC?
- 35 Answers
- 69891 Views
- ABB, Ace Info, Alstom, Shalivahana Power, I also Faced
- E-Mail Answers
Answer Posted / kavya
since the electromagnetic torque produced is zero for a ac
excitation., we always prefer dc which does not change
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
explain transformer ct connection?
which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter
what is EIB lighting control system? what is the advantages of this system?
What is marx circuit?
What is principle of Floroscent tube 36watt.
How i can decide that HVDC line is best for transmission.
how to electrically make connection to ferroli GN2N?
Define bibo stability.
how many electricity poles are there and what are the names and their sizes.
what is differnce btwen lll and lllg faults
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
How many types of electrical earthing are there?
why we get 2 differnet values for power factor in 2 watt meter method in 3 phase
sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me
How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me
