Electrical Machines In DC generators, electric current to the external circuit from armature is given through commutator. none of above. slip rings. solid connection. commutator. none of above. slip rings. solid connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1080 1203 1200 1000 1080 1203 1200 1000 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase none of these machine A any of the two machines machine B none of these machine A any of the two machines machine B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced DC Shunt Motor The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase abruptly. DC Shunt Motor The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase abruptly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron reduces the saturation magnetization. increases the electrical resistivity of iron. increases the hysteresis loss. None of these reduces the saturation magnetization. increases the electrical resistivity of iron. increases the hysteresis loss. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 120 V 140 V 175 V 240 V 120 V 140 V 175 V 240 V ANSWER DOWNLOAD EXAMIANS APP
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