Home » English riddles » Electrical Machine » Machine Riddle No.20 – Open & short circuit test » Reply To: Machine Riddle No.20 – Open & short circuit test Reply To: Machine Riddle No.20 – Open & short circuit test 2021-08-03 at 11:08 am #1578 Hamid excuse me sir, Please refer to reference books, if you face to any problem, for helping we jump to it.