I saw a couple of WAG7s hauling a department coach-like one used for workshop/restvan and such..... on Vinukonda to Narasaraopet section. It was moving fast from Narasaraopet side towards Vinukonda.
It was early morning and passed before I could take pic, also my bus was moving fast too. But my co-passenger said that some goods trains he has seen go with Electric locos.