Question 4
- List four types of amplifiers.
- State the class of amplifier with the:
- least collector efficiency;
- highest collector efficiency.
- Draw and label the circuit diagram of an inverting operational amplifier.
Observation
The expected answers were;
(a) Classes of amplifier`
- Class A
- Class B
- Class C
- Class AB
(b)
(i) Class A
(ii) Class C
(c)Circuit diagram of an inverting operational amplifier
Many candidates were found to be very comfortable with this question as majority of them responded quite well to it.