Electrical Machines Eg (generated emf) and Eb (back emf) both are none of above. same. changes. different. none of above. same. changes. different. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again field winding must be excited by low voltage dc supply the field winding connection must be reversed the armature connection must be reversed the field winding must be replaced field winding must be excited by low voltage dc supply the field winding connection must be reversed the armature connection must be reversed the field winding must be replaced ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Thin laminations are used in a machine in order to reduce Eddy current losses Both 1 and 2 Hysteresis losses Copper losses Eddy current losses Both 1 and 2 Hysteresis losses Copper losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of single phase induction motor is having the highest power factor at full load ? Capacitor run type. Split phase type. Shaded pole type. Capacitor start. Capacitor run type. Split phase type. Shaded pole type. Capacitor start. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has negative speed regulation? Shunt motors. Both B and C. Differential compound motors. Series motors. Shunt motors. Both B and C. Differential compound motors. Series motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? Low short circuit current High voltage regulation Good voltage regulation None of these Low short circuit current High voltage regulation Good voltage regulation None of these ANSWER DOWNLOAD EXAMIANS APP
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