Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 90°. 30°. 120°. 60°. 90°. 30°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have higher efficiency. leading power factor. less breakdown torque. more breakdown torque. higher efficiency. leading power factor. less breakdown torque. more breakdown torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Universal motors are used in food processing cranes traction All of these food processing cranes traction All of these 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. 150 V. 210 V 240 V. 230 V. 150 V. 210 V 240 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? None of these Low short circuit current High voltage regulation Good voltage regulation None of these Low short circuit current High voltage regulation Good voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC machine has an armature resistance 1Ω. If the full load current is 20 A, the difference of induced voltage and generator is 60 V. 20 V. 40 V. 0 V. 60 V. 20 V. 40 V. 0 V. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS