Receivers

Explanation of question 14

In a superheterodyne receiver

• i the high selectivity is obtained in the RF amplifier
• ii the normal connection of an IF transformer is in the emitter circuit of a transistor.

1. i and ii are both true
2. i is true but ii is false
3. i is false but ii is true
4. i and ii are both false

The answer is :- 4 The high selectivity is achieved by the i.f. filter. The i.f. transformer is normally in the collector circuit.