For a motor rated at 3.3 kV, what would be a minimum accepted insulation resistance to hull ground as tested by an appropriate megger (insulation tester)?

Correct Answer: Option A — 4.3 megohms

Minimum insulation resistance for rotating machinery under IEEE 45 is calculated as rated voltage in kilovolts plus one megohm (kV + 1). For a 3.3 kV motor, 3.3 plus 1.0 yields 4.3 megohms, ensuring adequate dielectric integrity prior to energization.