A transformer that has 700 turns in the primary and 35 turns in the secondary has a turns ratio of 20:1.

The secondary voltages produced by a center-tapped transformer are equal in amplitude but 180° out of phase with respect to the center tap.

An open secondary winding of a transformer will cause the primary current to be nearly zero.

The reflected load value that the source sees will always be larger than the load value itself.

In the given circuit, the secondary voltage is in phase with the primary voltage.