Electrical Machines Ward Leonard control provides speed control above rated speed. in one direction only. below rated speed. in both direction. above rated speed. in one direction only. below rated speed. in both direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is shunt connected. cumulatively compounded. series connected. deferentially compounded. shunt connected. cumulatively compounded. series connected. deferentially compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to none of above. vary the armature resistance. control field current. limit the armature current. none of above. vary the armature resistance. control field current. limit the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 5 Hz 0 Hz 1 Hz 50 Hz 5 Hz 0 Hz 1 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 230 V. 240 V. 210 V 150 V. 230 V. 240 V. 210 V 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The dc motor which can provide zero speed regulation at full load without any controller, is differential compound. series. shunt. cumulative compound. differential compound. series. shunt. cumulative compound. ANSWER DOWNLOAD EXAMIANS APP
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