Electrical Engineering XYZ MCQs
The concept of V/f control of inverters driving induction motors results in:
- Reduced magnetic loss
- Harmonic elimination
- Constant torque operation
- Speed reversal
Correct answer: 3. Constant torque operation
Explanation: V/f control is designed to maintain a constant ratio of voltage to frequency (V/f) across the speed range of the motor. This means that as the speed of the motor varies, the voltage supplied to the motor is adjusted proportionally to maintain constant torque. Hence, V/f control facilitates constant torque operation, which is essential for various industrial applications such as conveyor belts, cranes, and pumps.