Electrical Machines The factors that are responsible for decrease in terminal voltage of a shunt generator are reduction in field current, effect of armature reaction, armature. armature resistance, effect of armature reaction. armature resistance, effect of armature reaction. armature resistance, inter poles, armature. reduction in field current, effect of armature reaction, armature. armature resistance, effect of armature reaction. armature resistance, effect of armature reaction. armature resistance, inter poles, armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? both A and B above rated speed below rated speed None of these both A and B above rated speed below rated speed None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum starting torque is obtained, rotor power is ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron loss in a transformer mainly occurs in transformer insulating oil. steel core in transformer. winding of transformer. iron made tank of transformer. transformer insulating oil. steel core in transformer. winding of transformer. iron made tank of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. decreased. kept constant to certain value. increased. remains unchanged. decreased. kept constant to certain value. increased. remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Copper brushes in DC machine are used None of these where high voltage and low current. where low voltage and high currents are involved. in both of above cases. None of these where high voltage and low current. where low voltage and high currents are involved. in both of above cases. ANSWER DOWNLOAD EXAMIANS APP
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