# Amplifiers

### Explanation of question 4

Some distortion normally occurs in class A amplification. This is because

1. the applied signal is changing
2. the zero bias only produces pulses at the output
3. the load resistance is non-linear
4. of the non-linearity of the transistor characteristic

The answer is :- 4 The ‘linear portion of the characteristic’ for class A operation is only approximately so. Because it is not a straight line, some distortion will occur.

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