Electrical Machines The power flow of a dc motor, with respect to a DC generator is increased. none of these. reversed. modified. increased. none of these. reversed. modified. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During hunting of a synchronous motor harmonic are developed in the armature circuit. field excitation increases. damper bar develops torque. negative phase sequence currents are generated. harmonic are developed in the armature circuit. field excitation increases. damper bar develops torque. negative phase sequence currents are generated. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss is proportional to f1.5. f3. f. f2. f1.5. f3. f. f2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a finite negative value 0 a positive finite value ∞ a finite negative value 0 a positive finite value ∞ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a given torque, reducing diverter resistance of a DC series motor causes decrease in speed demanding less armature current. increase in speed but armature currnet remains the same. decrease in speed but armature current remains the same. increase in speed demanding more armature current. decrease in speed demanding less armature current. increase in speed but armature currnet remains the same. decrease in speed but armature current remains the same. increase in speed demanding more armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 10% 19% 5% 40% 10% 19% 5% 40% ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS