engineering recuitment GATE EE 2023-24 Test Series Electrical Machines DC Motor DC Motor Speed Regulation
A 220 shunt motor has armature resistance of 0.5 ohm and takes a load current of 40 A. By what percentage should the main field flux be reduced to raise the speed by 50%, if the developed torque remains constant?
Enter numerical value using the virtual keypad. Round off where necessary.