Electrical Machines The armature reaction mmf in a DC machines has a form of triangular. rectangular. sinusoidal. trapezoidal. triangular. rectangular. sinusoidal. trapezoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. rotor winding is highly reactive. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Air core transformer as compared to iron core transformer, has less magnetic core loss. more copper loss. no magnetic core loss. more magnetic core loss. less magnetic core loss. more copper loss. no magnetic core loss. more magnetic core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 20KVA auto transformer, turn ratio is 0.8. Find the power transferred conductively? 20KVA 16KVA 4KVA 0KVA 20KVA 16KVA 4KVA 0KVA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the phase end of hv side at the phase end of lv side at the neutral side end of hv side at the middle of hv side at the phase end of hv side at the phase end of lv side at the neutral side end of hv side at the middle of hv side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are both 1 and 2 nullify reactance voltage and improve the commutation. None of these reduce cross magnetization effect and improve commutation both 1 and 2 nullify reactance voltage and improve the commutation. None of these reduce cross magnetization effect and improve commutation ANSWER DOWNLOAD EXAMIANS APP
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