Electrical Machines As compared to an induction motor, the air gap in a DC motor is less than 50%. between 50% and 90%. more. same. less than 50%. between 50% and 90%. more. same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between the yoke and armature is dc machine is kept very small to avoid over heating. to achieve a stronger magnetic field. to avoid locking of the armature. All of these to avoid over heating. to achieve a stronger magnetic field. to avoid locking of the armature. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commonly used starters of cage motor is both A and B. None of these DOL. star delta. both A and B. None of these DOL. star delta. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Mica. Oil impregnated paper. Glass. Vacuum. Mica. Oil impregnated paper. Glass. Vacuum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will burn. start haunting. run at very high speed. run at very low speed. burn. start haunting. run at very high speed. run at very low speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In normal dc machines operating at full-load conditions, the most powerful electromagnet is interpole winding armature winding interpole and compensating windings together field winding interpole winding armature winding interpole and compensating windings together field winding ANSWER DOWNLOAD EXAMIANS APP
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