Q11: How many lines are there in an
Q12: Luminance refers to_
A)contrast
B)diffusion
C)brightness
D)aperture
Q13: Linear modulation techniques are not bandwidth efficient.
Q14: Which of the following is not a
Q15: In BPSK, the_ of constant amplitude carrier signal
Q17: DPSK uses coherent form of PSK.
Q18: In DPSK system, input signal is differentially
Q19: QPSK has_ the bandwidth efficiency of BPSK.
A)twice
B)same
C)half
D)four times
Q20: QPSK provides twice the bandwidth efficiency and_ energy
Q21: What is the full form of OQPSK?
A)optical
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