Home » English riddles » Electrical Machine » Machine Question No.11 – 50HZ or 60HZ » Reply To: Machine Question No.11 – 50HZ or 60HZ Reply To: Machine Question No.11 – 50HZ or 60HZ 2021-08-03 at 11:08 am #2405 k v varma supply voltage also has to be changed.pl recall the emf equation