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NOISE CONSIDERATION

Authored by SHARANYANIVASINI JS

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NOISE CONSIDERATION
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10 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which of the following is not a type of noise in PCM?

A. Thermal noise
B. Shot noise
C. Impulse noise
D. Phase noise

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the primary cause of quantization noise?

A. Sampling error
B. Signal distortion
C. Limited number of quantization levels
D. Amplifier noise

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following is not a way to reduce quantization noise?

A. Increasing the number of quantization levels
B. Using a companding technique
C. Using a low-pass filter
D. Increasing the sampling rate

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the effect of increasing the number of quantization levels?

A. It reduces quantization noise
B. It increases quantization noise
C. It has no effect on quantization noise
D. It causes distortion in the signal

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the purpose of using a companding technique?

A. To reduce quantization noise
B. To increase the dynamic range of the signal
C. To reduce the bandwidth required for transmission
D. To reduce the effect of interference

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the effect of using a low-pass filter on a PCM signal?

A. It reduces quantization noise
B. It increases quantization noise
C. It eliminates quantization noise completely
D. It has no effect on quantization noise

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A PCM signal with a sampling rate of 8 kHz and 8-bit quantization is being transmitted over a channel with a bandwidth of 4 kHz. What is the minimum signal-to-noise ratio (SNR) required to achieve a bit error rate (BER) of 10^-3?

A. 26 dB
B. 33 dB
C. 40 dB
D. 47 dB

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