Question 1 : Examples of PCM waveforms are
1. Non return to zero
2. Phase encoded
3. Multilevel binary
4. All of the mentioned
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Question 2 : Which method is called as differential encoding?
1. NRZ-L
2. NRZ-M
3. NRZ-S
4. None of the mentioned
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Question 3 : What is the standard value of μ in μ-law ?
1. 128
2. 255
3. 256
4. 0
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Question 4 : Source coding reduces
1. Redundancy
2. Average bit rate
3. Redundancy & Average bit rate
4. None of the mentioned
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Question 5 : Application of phase encoded binary signals are
1. Optical communication
2. Magnetic recording
3. Satellite telemetry
4. All of the mentioned
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Question 6 : Decreasing the data rate is called as
1. Aliasing
2. Down sampling
3. Up sampling
4. None of the mentioned
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Question 7 : The process in which the top of each pulse in the output samples retains the shape of the analog segment is called as ________
1. Natural sampling
2. Ideal sampling
3. Aliasing
4. None of the mentioned
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Question 8 : Which waveform type has the feature of clocking?
1. Manchester coding
2. Bbi-p-M
3. Delay modulation
4. NRZ-L
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Question 9 : When pulse code modulation is applied to non binary symbols we obtain waveform called as
1. PCM
2. PAM
3. M-ary
4. line codes
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Question 10 : When channel bandwidth is greater than the pulse bandwidth, it causes
1. Intersignal interference
2. Intersymbol interference
3. Bandwidth error
4. None of the mentioned
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