IIM Shillong WAT PI experiences

Hi Dipal,
I am an electrical and electronics engineer with no formal work experience. I was asked on the concepts of electrical machines and transformers and their workings.How does a transformer work? Why do we transmit electricity in AC? I was asked about the working of touchscreens and cellular networks. Why mobile phones are called cellular phones?Most sold mobile phone in the world? Largest telecom operators in India? Then I was asked on some political issues of Meghalaya. I was asked about the socio economic topics of north east and how i viewed them. I was also asked about our country's relationship with neighbouring countries such as Bangladesh, Myanmar etc. and the role of north east in it. The interview went on for 20 mins. and I answered with confidence.