Line coding (RZ, NRZ) : Polar, Bi polar in Base Band Transmission - MCQs

Line coding (RZ, NRZ) : Polar, Bi polar in Base Band Transmission - MCQs

Q1. In polar RZ format for coding, symbol '0' is represented by

a) Zero voltage
b) Negative voltage
c) Pulse is transmitted for half the duration
d) Both b) and c) are correct

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Q2. In a uni-polar RZ format,

a) The waveform has zero value for symbol '0'

b) The waveform has A volts for symbol '1'

c) The waveform has positive and negative values for '1' and '0' symbol respectively

d) Both a) and b) are correct

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Q3. Polar coding is a technique in which

a) 1 is transmitted by a positive pulse and 0 is transmitted by negative pulse

b) 1 is transmitted by a positive pulse and 0 is transmitted by zero volts

c) None of the above

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Q4. The polarities in NRZ format use

a) Complete pulse duration
b) Half duration
c) Bothe positive as well as negative value
d) Each pulse is used for twice the duration

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