RF Mixing MCQ’s

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This set of Analog Communication Multiple Choice Questions & Answers (MCQs) focuses on “RF Mixing”.

1. Spectral density express ________
a) Average voltage
b) Average power in a waveform as a function of frequency
c) Average noise voltage
d) Average channel capacity

2. For a Gaussian process, auto correction also implies _________
a) Statistical dependance
b) Statistical independence
c) Statistical distribution
d) Ergodic process

3. For a periodic function, the spectral density and auto-correlation functions are ________
a) Laplace transform pair
b) Fourier transform pair
c) Gauss transform pair
d) Z-transform pair

4. What will be the value of modulation if we want maximum undistorted transmitted power?
a) 0
b) 1
c) 0.2
d) 0.5

5. The output stage of television transmitters is most likely to be a __________
a) Grid modulated class C amplifier
b) Grid modulated class A amplifier
c) Plate modulated class C amplifier
d) Plate modulated class A amplifier

6. A function f(x) is odd, when?
a) f(x) = -f(x)
b) f(x) = f(-x)
c) f(x) = -f(x)f(-x)
d) f(x) = f(x)f(-x)

7. For providing two or more voice circuits on the same carrier, we can use _________
a) SSB
b) ISB systems
c) DSB-SC
d) VSB

8. Modulation is used to separate differing transmission.
a) True
b) False

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