what is the surge arrestor?how it operates?what is the range for it?
what is the circutor?why we use it ?
what is the difference between star and delta connection ? when we use each one ?what is the best ?
Amara Raja, Daikin,
how the alternator transfere mechanical energy to electrical one ??
what is the diffrantial relay???????why we use it on the MDB
what is the meaning of the parameters labeled on the surge arrestor like 150/20 ???