Communication Systems - Study Mode

[#181] In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then
Correct Answer

(B) Amplitude of distant sidebands increases

[#182] Full duplex operation permits transmission in both directions at the same time.
Correct Answer

(A) True

[#183] The colour of an object is decided by
Correct Answer

(C) Reflected colour for opaque object and wavelength transmitted through it for transparent objects

[#184] Which of the following is a digital modulation technique?
Correct Answer

(B) PSK

[#185] Assertion (A): In FM the frequency of the carrier is varied by the modulating voltage Reason (R): FM and PM are two forms of angle modulation.
Correct Answer

(B) Both A and R are correct but R is not correct explanation of A