Electrical Machines which of the following losses are negligible in blocked rotor test? iron loss both A and B copper loss mechanical loss iron loss both A and B copper loss mechanical loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fifth harmonic component of the induced voltage in three phase AC generator can be eliminated by using a winding pitch of 6 / 7. 5 / 6. 4 / 5. 2 / 3. 6 / 7. 5 / 6. 4 / 5. 2 / 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. increased. kept constant to certain value. decreased. remains unchanged. increased. kept constant to certain value. decreased. remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Satisfactory commutation of DC machine requires brushes should be of proper grade and size. smooth, concentric commutator properly undercut. All of these brushes should smoothly run in the holders. brushes should be of proper grade and size. smooth, concentric commutator properly undercut. All of these brushes should smoothly run in the holders. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? core loss only windage and friction loss both 1 and 2 Copper loss core loss only windage and friction loss both 1 and 2 Copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series generators are used in which of the following applications? Arc welding. All of these Used as boosters in dc distribution or transmission. Air crafts. Arc welding. All of these Used as boosters in dc distribution or transmission. Air crafts. ANSWER DOWNLOAD EXAMIANS APP
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