Inductors - Technical MCQs

Q1:

A utility pole transformer used to supply a residential customer with two phases uses:

A two phases on the primary

B a center tap on the secondary

C a separate ground for each phase

D a small coefficient of coupling

ANS:B - a center tap on the secondary

Scott-T transformer utilizes this technique. The Unbalanced loads configuration uses one center tap at secondary while Back to back arrangement uses two center taps at the secondary.