An air gap is usually inserted in magnetic circuits to
A. increase m.m.f.
B. increase the flux
C. prevent saturation
D. none of the above
Answer:C
An air gap is usually inserted in magnetic circuits to
A. increase m.m.f. B. increase the flux C. prevent saturation D. none of the above
Explanation: Air gap is non-magnetic part of a magnetic circuit. It increases the value of magnetizing current and lowers the achievable flux density.