The expected answers were:
(a)
(b) Applications:
(i) n-channel (ii) Thyristor (iii) Triac
- Input amplifier - power control - Relay control
- Logic circuits device - Motor control
- Large scale integration - Switch control - Phase control
- Inverters
- Heater control
- Static switches
The question was on Semiconductor Devices. It was quite popular with the candidates. The performance was very good.