Electrical Machines In induction motor the 7th harmonic torque may make the motor rotate at (1 / 7)th synchronous speed. This is called harmonics. crawling. cogging. resonance. harmonics. crawling. cogging. resonance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for shunt motors. differential compound motors. series motors. separately excited motors. shunt motors. differential compound motors. series motors. separately excited motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of tappings for each equalizer ring is equal to number of commutator segments. number of parallel paths. number of pole pairs. number of poles. number of commutator segments. number of parallel paths. number of pole pairs. number of poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Motor for constant load torque, what will happen to the armature current if armature resistance increases? Remain unchanged Decreases. Increases. None of above. Remain unchanged Decreases. Increases. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? DOL starter. Auto transformer starter. Star-delta starter. All of these. DOL starter. Auto transformer starter. Star-delta starter. All of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip exists in none of above. induction motor. synchronous motor. in both machines. none of above. induction motor. synchronous motor. in both machines. ANSWER DOWNLOAD EXAMIANS APP
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