Question

For which transformer is turn ratio greater than 1?

Answer 1

1. A step-up transformer is used to convert a low-voltage alternating emf to a high-voltage alternating emf of the same frequency
2. The number of turns in the primary coil of a step-up transformer is less than the number of turns in the secondary coil, i.e. N_p < N_s or N_s/N_p > 1.
3. The turns ratio is greater than 1.