Kindly, just show the correct answers. No explanations required

1.The main sources of corruption are

a) Sampling and quantizing effects

b) Channel effects

c) Sampling, quantizing and channel effects

d) None of the mentioned

2. The distortion in quantization is called as

a) Round off error

b) Truncation error

c) Round off & Truncation error

d) None of the mentioned

3. In quantization process, the amount of quantization noise is _______________ to number of levels.

a) Directly proportional

b) Inversely proportional

c) Independent

d) None of the mentioned

4. Saturation noises can be avoided or reduced by

a) Automatic gain control

b) Amplifying

c) Filtering

d) None of the mentioned

5. Timing jitter can be reduced by

a) Good power supply isolation

b) Stable clock reference

c) Good power supply isolation & Stable clock reference

d) None of the mentioned

6. The reasons for the threshold effect are

a) Thermal noise

b) Interference from other users

c) Interference from circuit switching transients

d) All of the mentioned

7. When channel bandwidth is greater than the pulse bandwidth, it causes

a) Intersignal interference

b) Intersymbol interference

c) Bandwidth error

d) None of the mentioned

8. The _____________ corresponds to average quantization noise power.

a) Mean

b) Variance

c) Probability density function

d) None of the mentioned

9. Signal to noise ratio increases as ___________ increases.

a) Quantization level

b) Square of quantization level

c) Square root of quantization level

d) None of the mentioned