Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase machine A any of the two machines none of these machine B machine A any of the two machines none of these machine B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. wound. none of these. linear. cage. wound. none of these. linear. cage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following factors improve commutation in a dc machine ? 1. High contact resistance of brushes 2. High inductance of the coils undergoing commutation 3. Shifting of brushes in the direction of rotation for a generator and in the opposite direction For a motor 4. Narrow width for the commutation bars Select the correct answer using the codes given below : Codes : 2, 3 and 4 1, 2, and 3 1 and 3 1, 2 and 4 2, 3 and 4 1, 2, and 3 1 and 3 1, 2 and 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where less costly motor is not required. high starting torque. low starting torque. power factor is less. less costly motor is not required. high starting torque. low starting torque. power factor is less. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shapers and slotters which motor are preferred? Slip ring IM. Synchronous motor. Double cage motor. Squirrel cage IM. Slip ring IM. Synchronous motor. Double cage motor. Squirrel cage IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake both 1 and 2 None of these non reversing drive reversing drive both 1 and 2 None of these non reversing drive reversing drive ANSWER DOWNLOAD EXAMIANS APP
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