Electrical Machines Armature reaction effect is more in which of the following methods? field weakening method armature resistance control None of these same in both methods field weakening method armature resistance control None of these same in both methods ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of operation of a 3 - Φ induction motor is almost similar to that of synchronous motor. repulsion start induction motor. transformer with secondary short circuited. capacitor start induction motor. synchronous motor. repulsion start induction motor. transformer with secondary short circuited. capacitor start induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If two 8-pole dc machines of identical armature sare wound, one with lap winding and the other with wave winding, then wave-wound machine will have more rated current and more voltage lap-wound machine will have more rated voltage and more current lap-wound machine will have more rated voltage and less current wave-wound machine will have more rated voltage and less current wave-wound machine will have more rated current and more voltage lap-wound machine will have more rated voltage and more current lap-wound machine will have more rated voltage and less current wave-wound machine will have more rated voltage and less current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of the rotor bars of dc motors are laminated to reduce mechanical losses. to reduce eddy current loss. to provide better flux linkage. to reduce hysteresis loss. to reduce mechanical losses. to reduce eddy current loss. to provide better flux linkage. to reduce hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is 400 A. 440 A. 44 A. 40 A. 400 A. 440 A. 44 A. 40 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? armature current(Ia) both A and B flux(φ) None of these armature current(Ia) both A and B flux(φ) None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS