Final answer:
Various tests can be performed on transformers, including continuity, insulation, and impedance testing.
Step-by-step explanation:
Various tests can be performed on transformers, including continuity, insulation, and impedance testing.
Impedance testing is done to measure the resistance of a transformer to the flow of alternating current (AC), and it helps determine the efficiency and quality of the transformer.
Some common methods used for impedance testing include short-circuit impedance testing and open-circuit impedance testing.