Q1: Answer Three only of following: (15 Marks) 1- An 8-pole wave -wound d.c generator with output current is 200 A and has AT/pole = 2600 AT and ATa/pole= 400 AT. Find the number of conductor. 2- An iron ring of circular cross sectional area of 3 cm² and mean diameter of 20 cm is wound with 500 turns of wire and carries a current of 2A to produce the magnetic flux of 0.5mWb in the ring. Determine the permeability of the material. 3- Generators convert mechanical motion to electrical energy. What the principle of working? 4- A separately excited 4 - pole, 900 rpm wave wound de generator has an induced emf of 240V at rated speed and rated field current. When connected to a load, the terminal voltage is observed to be 200V. If the armature resistance is 0.2 2 and the flux per pole is 10 m Wb, compute the armature current and the number of conductors