Electrical Machines Which of the following DC Motor is used in paper machines? Separately excited DC motor. DC Shunt motor. DC compound motor. DC series motor. Separately excited DC motor. DC Shunt motor. DC compound motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs either of these. decrease. None of these increase. either of these. decrease. None of these increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by low voltage supply high loads improper design of stator laminations harmonics developed in the motor low voltage supply high loads improper design of stator laminations harmonics developed in the motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? None of the options. Armature flux distorts the main field flux. Armature flux weakens the main field flux. Both option B and C. None of the options. Armature flux distorts the main field flux. Armature flux weakens the main field flux. Both option B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the armature will oscillate about original speed as the mean speed armature current will drop motor will attain dangerously high speed motor will become slow. armature will oscillate about original speed as the mean speed armature current will drop motor will attain dangerously high speed motor will become slow. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called cogging. crawling. skewing. slip. cogging. crawling. skewing. slip. ANSWER DOWNLOAD EXAMIANS APP
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