11. Vividh Bharati Programme is transmitted in –
(a) Short wave
(b) Medium frequency
(c) Very high frequency
(d) None of the above
12. Amount of information in continuous signal is :
(a) Zero
(b) 2 bits
(c) 4 bits
(d) infinite
13. In ergodic process :
(a) Ensemble and time average are identical
(b) Ensemble and time average are different
(c) Ensemble and time average are opposite to each other
(d) None of the above
14. The coupling used in stoneman transmission bridge is :
(a) Resistive
(b) Capacitive
(c) Inductive
(d) A combination of all the above
15. Communication consists of electrical means of ……. Information.
(a) Sending
(b) Receiving
(c) Processing
(d) All of the above
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Analog Communications » Exercise - 14. Which of the following is not true regarding auto-correlation function? (a) It is an average function (b) It is defined only for periodic signals (c) It is measure of both time variation and statistical dependence (d) It is non-unique description of signals- Analog Communications » Exercise - 1 13. In ergodic process : (a) Ensemble and time average are identical (b) Ensemble and time average are different (c) Ensemble and time average are opposite to each other (d) None of the above
- Analog Communications » Exercise - 12. An ergodic process in communication present if many random signals have- (a) Identical time averages (b) Identical ensemble averages (c) Identical time and ensemble averages (d) None of the above
- Analog Communications » Exercise - 17. The auto-correlation function of a signal (t) at to = 0 is equal to - (a) Zero (b) Infinite (c) Average voltage of the signal (d) Average power of the signal
- Analog Communications » Exercise - 19. A random process is defined as ergodic if - (a) All type of ensemble averages are not changeable (b) All type of ensemble averages are constant (c) All type of ensemble averages are interchangeable (d) None of these