Electrical Machines The armature voltage control is considered suitable for a DC motor driven at constant torque. power. speed. current. torque. power. speed. current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers operating in parallel will share the load depending on their efficiency per unit impedance leakage reactance ratings efficiency per unit impedance leakage reactance ratings ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Flemings left hand rule. Amperes law. Flemings right hand rule. Lenzs law. Flemings left hand rule. Amperes law. Flemings right hand rule. Lenzs law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by varying the applied voltage. varying the speed. changing the field excitation. changing the load. varying the applied voltage. varying the speed. changing the field excitation. changing the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to dissipate more heat. reduce pulsation loss. reduce iron weight. reduce armature reaction. dissipate more heat. reduce pulsation loss. reduce iron weight. reduce armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator in case the brushes are moved so as to bring them in magnetic neutral axis, then, there will be cross-magnetisation. cross-magnetization as well as demagnetization. none of above. demagnetisation. cross-magnetisation. cross-magnetization as well as demagnetization. none of above. demagnetisation. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS