Electrical Machines What are slot wedges in a DC machine made of? Cast iron. Mild steel. Fibre. Silicon steel. Cast iron. Mild steel. Fibre. Silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto-transformer, power is transferred through conduction process only. induction process only. None of these both A and B. conduction process only. induction process only. None of these both A and B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will none of these. remains same. increase. Decrease.d none of these. remains same. increase. Decrease.d ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage any one of above. due to wrong direction of rotation. if it has lost residual magnetism. if field resistance is more than critical resistance. any one of above. due to wrong direction of rotation. if it has lost residual magnetism. if field resistance is more than critical resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to withstand bending moment due to weight of the armature. any unbalanced magnetic pull on the armature core. twisting strains due to transmission of torque. All of these bending moment due to weight of the armature. any unbalanced magnetic pull on the armature core. twisting strains due to transmission of torque. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For power factor improvement the synchronous motor is to be lightly loaded and underecited lightly loaded and over excited heavily loaded and over excited heavily loaded and underexcited lightly loaded and underecited lightly loaded and over excited heavily loaded and over excited heavily loaded and underexcited ANSWER DOWNLOAD EXAMIANS APP
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