Question

No current is drawn from the secondary of an ideal transformer, the power factor of the primary coil is

• A. $\frac{1}{2}$
• B. 1
• C. $\infty$
• D. ZERO

Answer 1

Answer: (D)

ZERO

Answer 2

No energy is drawn from the source. For ideal transformer, efficiency = 1. Since output is zero so input is also zero.