Receiver Synchronization MCQ’s

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This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Receiver Synchronization”.

1. Acquisition is a ______ operation.
a) Linear
b) Non linear
c) Linear & Non linear
d) None of the mentioned

2. A cycle slip occurs when the magnitude of the original phase error exceeds
a) Π radians
b) 2π radians
c) π/2 radians
d) π2 radians

3. What is the function of the edge detector?
a) Differentiation
b) Rectification
c) Differentiation & Rectification
d) None of the mentioned

4. In VCO the output frequency is a linear function of its input
a) Frequency
b) Voltage
c) Time period
d) None of the mentioned

5. The number of filters in CPM receiver structure is
a) LM
b) ML
c) M/L
d) None of the mentioned

6. Phase locked loops consists of
a) Phase detectors
b) Loop filter
c) Voltage controlled oscillator
d) All of the mentioned

7. To avoid the loop to be driven to lock, the sweep rate should be
a) Smaller
b) Larger
c) It does not depend on it
d) None of the mentioned

8. Continuous phase modulation has
a) More bandwidth efficiency
b) More smoothness
c) More bandwidth efficiency & smoothness
d) None of the mentioned

9. Which method is more accurate?
a) Closed loop synchronizer
b) Open loop synchronizer
c) Closed & Open loop synchronizer
d) None of the mentioned

10. CPM has
a) Narrower bandwidth
b) Wider bandwidth
c) More bandwidth requirement
d) None of the mentioned

11. PLL designs have
a) First order loop
b) Second order loop
c) Higher order loop
d) None of the mentioned

12. When phase noise and phase jitter is doubled, the phase variance increases by
a) Two times
b) Four times
c) 0.5 times
d) 8 times

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