Dispersion coefficient σ is the ratio of
- A. magnetizing current to supply voltage
- B. open circuit voltage to short circuit current for the same excitement
- C. magnetizing current to ideal short circuit current
- D. short circuit current to magnetizing current
Answer: C. magnetizing current to ideal short circuit current
Explanation: Heyland's leakage (dispersion) coefficient σ = Im/Isc,ideal (magnetising current to ideal short-circuit current).