A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/f is constant. At 50 Hz, the starting torque is 100 N-m. At 25 Hz, the starting torque

• will be less than 100 N-m
• will be more than 100 N-m
• may be more or less than 100 N-m depending on motor parameters
• very small