5.Synchronous and Induction 3-Phase AC Motor a. [5%] Explain the construction difference between a synchronous and an induction 3-phase AC motor,in terms of field circuit and armature circuit b. [5%] Both synchronous and induction 3-phase AC motors are connected to an electrical grid with a line-to-line voltage of 380 V and a frequency of 60 Hz.Each motor has 3 pairs of poles. Calculate the speed of synchronous and induction 3-phase AC motor? Given the slip value of3%.