Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 2, 4 2, 3 1, 4 1, 3 2, 4 2, 3 1, 4 1, 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon both 2 and 3 supply frequency load current maximum flux density both 2 and 3 supply frequency load current maximum flux density ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively large and thin large and thick less and thin less and thick large and thin large and thick less and thin less and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pole pairs, Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for simple wave-winding ? PZL/4S PZL/ 4Sa PZL/4Sa² PZL/4Sp² PZL/4S PZL/ 4Sa PZL/4Sa² PZL/4Sp² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following components of a DC generator plays vital role for providing direct electric current of a DC generator? Eye bolt. Equalizer rings. Commutator. Dummy coils. Eye bolt. Equalizer rings. Commutator. Dummy coils. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is employed to brake non reversing drive both 1 and 2 reversing drive None of these non reversing drive both 1 and 2 reversing drive None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS