Electrical Machines Voltage regulation of transformer is given by (V2 - E2) / V2 (E2 - V2) / V2 (V2 - E2) / E2 (E2 - V2) / E2 (V2 - E2) / V2 (E2 - V2) / V2 (V2 - E2) / E2 (E2 - V2) / E2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be PN/120. PN/3000. PN/2. PN/60. PN/120. PN/3000. PN/2. PN/60. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause All of these double frequency currents in the rotor. vibrations. heating of rotor. All of these double frequency currents in the rotor. vibrations. heating of rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The wound rotor type IM is used for____________ speed operation. maximum. minimum. variable. constant. maximum. minimum. variable. constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Width of a carbon brush should be equal to the width of the 1 to 2 commutator segment. the width of the 2 to 3 commutator segment. the width more than 3 commutator segment. less than the width of commutator segment. the width of the 1 to 2 commutator segment. the width of the 2 to 3 commutator segment. the width more than 3 commutator segment. less than the width of commutator segment. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines, the interpoles are provided to counteract the reactance voltage and the cross-magnetizi both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to make commutation spark less. to counteract the reactance voltage and the cross-magnetizi both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to make commutation spark less. ANSWER DOWNLOAD EXAMIANS APP
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