The expected answers were:
(a) Any two advantages
- Gain stabilization
- Reduction of distortion
- Enhancement of bandwidth
- Reduction of noise
(b) The circuit diagram is conventionally referred to as the “inverting amplifier”.
(c) The functions of the circuit elements are as follows:
- Ri serves as input resistance and forms part of the feedback network.
- A amplifies the input signal
- Rf essentially provides the feedback signal
This question was on amplifiers. The question was popular. Many candidates that answered this question did well in it.