Electrical Machines which of the following losses are negligible in blocked rotor test? iron loss mechanical loss copper loss both A and B iron loss mechanical loss copper loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The heat transfer by convection in a transformer least depends on air velocity. surface area. temperature difference. color of the paint. air velocity. surface area. temperature difference. color of the paint. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, electric current to the external circuit from armature is given through solid connection. none of above. slip rings. commutator. solid connection. none of above. slip rings. commutator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be rough commutator surface. any of above. imperfect contact. severe sparking. rough commutator surface. any of above. imperfect contact. severe sparking. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A generator may loose residual magnetism due to heating. any of these. over excitation. vibrations. heating. any of these. over excitation. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which slots are used in the rotor of an induction motor? Open slots. None of above. Closed slots. Semi closed slots. Open slots. None of above. Closed slots. Semi closed slots. ANSWER DOWNLOAD EXAMIANS APP
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