Read the problem carefully. Draw the single line diagram of the circuit and write your detailed solutions on a clear paper (no guidelines). No detailed solution, no credit. An electrical machine has the following internal characteristics: Rating: 17.5 KW, Armature resistance: 0.02 N; Series field resistance: 0.02 N, Speed: 900 rpm; Brush resistance per brush: 0.02 N; Shunt resistance: 110 0; Diverter resistance: 50n 1. If the machine is connected to a 248.5 V load with its feeders having 0.005 Q each, find the generated voltage of the electrical machine 2. As the load was removed, the machine generated a no-load voltage of 254.6 V while the current passing into it is read at 1.75 A. Find the efficiency of the electrical machine once the load is inserted into the electrical machine. 3. As the machine was converted into a motor with a conveyor belt serving as its load drawing and connected to a 230.6 V mains where the armature draws a current of 46.7 A. If the load was removed, the armature current decreases by 90 percent, weakening the armature reaction from no-load to full-load by 3%. Neglecting brush resistances, find the speed of the machine once the load is removed. 4. Removing the conveyor belt, the machine converted into the motor now runs generator with a 90% efficiency. If the overall efficiency of the system is 81.5%, find: (a) The total losses in the motor-generator set (b) The efficiency of the motor (c) The power losses in each machine.