Simple wiring in T.R.S., P.V.C. wires on T.W. button, test & connect D.C. generators, motor and repair minor faults, connect and run A.C. motors, Carryout simple windings, re-winding of detected faults in both DC & AC machines, install a rectifier and repair minor faults, rectify the faults of simple amplifiers, horn circuits, carryout battery charging and armature winding, etc.