Electrical Machines In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch 100 1 50 10 100 1 50 10 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator reduces inter poles flux density. results in sparking trouble. reduces generator emf. increases armature speed. reduces inter poles flux density. results in sparking trouble. reduces generator emf. increases armature speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt = Ea + Ia(ra + rs) Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt = Ea + Ia(ra + rs) 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 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 wave-wound machine will have more rated current and more voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines, the interpoles are provided to counteract demagnetizing effect of armature mmf in commutating zone. to counteract the reactance voltage and the cross-magnetizi to make commutation spark less. both (B) and (C). to counteract demagnetizing effect of armature mmf in commutating zone. to counteract the reactance voltage and the cross-magnetizi to make commutation spark less. both (B) and (C). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic field which initially induces emf in the armature in a self excited DC generator is because of residual magnetism. armature reaction. None of these permanent magnets. residual magnetism. armature reaction. None of these permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
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