When you are making a high potential test (megger) on the motor coils of repaired electrical machinery to ground. What would a low resistance reading indicate?

Correct Answer: Option B — bad insulation

A low megohmmeter resistance reading indicates compromised dielectric properties, moisture ingress, or deteriorated varnish, signifying bad insulation. Per 46 CFR Subchapter J and IEEE 45 standards, such insulation failure risks electrical breakdown, ground faults, and catastrophic motor winding short circuits.