Electrical Machines The armature reaction mmf in a DC machines has a form of sinusoidal. trapezoidal. triangular. rectangular. sinusoidal. trapezoidal. triangular. rectangular. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Oil impregnated paper. Vacuum. Glass. Mica. Oil impregnated paper. Vacuum. Glass. Mica. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct-on-line (DOL) starters are not suitable for starting large DC motors, because the starting torque becomes low. the starting current will be enormously high. the motor may run away. the motor may not start. the starting torque becomes low. the starting current will be enormously high. the motor may run away. the motor may not start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the brushes remain in contact with conductors which lie in the inter polar gaps. there is no hard and fast rule for this. lie under north pole. lie under south pole. lie in the inter polar gaps. there is no hard and fast rule for this. lie under north pole. lie under south pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto-transformer, power is transferred through both A and B. conduction process only. induction process only. None of these both A and B. conduction process only. induction process only. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor, damper windings are provided on stator frame. None of these pole faces. rotor shaft. stator frame. None of these pole faces. rotor shaft. ANSWER DOWNLOAD EXAMIANS APP
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