Electrical Machines In a DC generator, the ripples in the direct emf generated are reduced by employing graphite brushes. carbon brushes. equalizer rings. commutator with large number of segments. graphite brushes. carbon brushes. equalizer rings. commutator with large number of segments. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, torque and supply voltage are related as T ∝ 1/V² T ∝ V T∝ V² T ∝ 1/V T ∝ 1/V² T ∝ V T∝ V² T ∝ 1/V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the actual arrangement of series wound generator? Armature and field both are parallel. Armature and field both are in series with the load. Armature and field both are connected. Armature winding is in series with load. Armature and field both are parallel. Armature and field both are in series with the load. Armature and field both are connected. Armature winding is in series with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor electromagnetic power varies None of these inversely as applied voltage directly as square of applied voltage directly as applied voltage None of these inversely as applied voltage directly as square of applied voltage directly as applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will increase. any of the above. decrease. remain constant. increase. any of the above. decrease. remain constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to reduce iron weight. dissipate more heat. reduce armature reaction. reduce pulsation loss. reduce iron weight. dissipate more heat. reduce armature reaction. reduce pulsation loss. ANSWER DOWNLOAD EXAMIANS APP
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