1. Please introduce yourself.
2. What is the difference between CRT, TFT and LCD tvs?
3. What is digital TV? How is the encoding done? What format is it transmitted: voltage signals or binary information?
4. What is the purpose of so many bands in radio transmission?
5. Can you make an FM receiver for me in Rs. 20? How?
6. How many types of transformers do you know? {power, instrument - CT, PT, isolating, audio transformers)
7. Tell us something more about the audio transformers and its special construction.
8. There is a sound heard when you operate transformers. What causes that sound? What is magnetostriction? What other types of noise could be there? {mechanical noises} What steps do you take to minimize them? How can you ensure that?
9. Please make the equivalent circuit of a transformer referred to the primary. How is this R2' and X2' determined? How does it depend on R2 and X2?
10. Electrical accessories in a car. {Thanks Shyam}
11. What is a thermistor? How does its resistance change with temperature?Please write down the formula for the change is resistance in a thermistor.
12. Do you know the symbol of a thermistor? (I said no…) Do you know the symbol of the rupee? (Yeh maine bana diya) :P
Round 3; Interview
Summary:
Ask the interviewers what aspect they are looking at on the question... They are willing to help you see what direction they want the answers. Answer with confidence.