How can the windings ratio be safely determined for an unmarked transformer?
A)Apply known low voltage ac to the primary and measure the secondary output. The ratio of the voltages is the same as the windings ratio.
B)Standardized wire color codes indicate windings ratio.
C)The turns ratio is the same as the ratio of primary resistance to secondary resistance ratio.
D)either A or C

Question

Quizplus · Accepted Answer

Applying a known low voltage AC to the primary and measuring the secondary output allows for the calculation of the windings ratio by comparing the input and output voltages.

How Can the Windings Ratio Be Safely Determined for an Unmarked