PPSC Past Papers MCQs

PPSC Past Papers Most Repeated  — 741 MCQs  (Page 72 of 75)

Practice PPSC Past Papers MCQs with solved questions from real past exams. These MCQs cover PPSC Past Papers Most Repeated past papers and are ideal for candidates preparing for competitive exams.

View Tests (30 MCQs each)
In phase lock which parameter is synchronized
  • A. Frequency
  • B. Phase
  • C. Frequency & phase
  • D. None of the mentioned
Coherent modulation requires ____ level of synchronization.
  • A. One
  • B. Two
  • C. Three
  • D. None of the mentioned
Non coherent system requires
  • A. Phase synchronization
  • B. Frequency synchronization
  • C. Phase & frequency synchronization
  • D. None of the mentioned
For block codes _____ is necessary.
  • A. Phase synchronization
  • B. Frequency synchronization
  • C. Frame synchronization
  • D. None of the mentioned
The synchronization necessary for BPSK is
  • A. Frequency tracking
  • B. Bit timing
  • C. Phase tracking
  • D. All of the mentioned
Transmitter synchronization implies
  • A. One way communication
  • B. Two way communication
  • C. One & two way communication
  • D. None of the mentioned
As the synchronization levels increases, cost
  • A. Decreases
  • B. Increases
  • C. Remains the same
  • D. None of the mentioned
Synchronization is used in system which has
  • A. Non coherent modulation techniques
  • B. Many users accessing
  • C. Non coherent modulation techniques & many users accessing
  • D. None of the mentioned
Which method has fast acquisition and can work without return link?
  • A. Open loop method
  • B. Closed loop method
  • C. Open & closed loop method
  • D. None of the mentioned