Tap Changing
My father was an Electrical Engineer that for a brief time was involved in controlling the electrical in/output in various aircraft, the Ambassador being one of them. I can always remember him remarking that everytime during takeoff roll and climb out it concerned him about the amount of "Tap Changing" going on in the electrical system. I have no idea what he ment and at that time really had no interest in Electrical Engineering except in the 6 and 12 volts in the old Bangers that I owned at the time.
Alan