1. D.C. machines designed with a large value of air gap length have
2. _________ electromagnets generally function as holding magnets.
3. By which of the following methods motor rating for variable load drives can be determined ?
4. In direct cooled system using hydrogen both stator and rotor conductors are made
5. On which of the following variables heat convected depends ?
6. An instrument transformer is used to extend the range of
7. The value of exciting or magnetizing current depends upon which of the following factors ?
8. The voltage control in electric supply networks in required on account of which of the following reasons ?
9. The function of shunt in an ammeter is to
10. A phase shifting transformer is used in conjunction with
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