Analog Communications Mock Test 5

10%

Question 1 of 10

1. In televisions, equalizing pulses are sent during __________

horizontal retrace

vertical blanking

horizontal blanking

serrations

Question 1 of 10

Question 2 of 10

2. In AM pilot carrier, transmission has ________

carrier and part of one side band

carrier, one side band and part of other side band

two side bands

two side bands and a carrier

Question 2 of 10

Question 3 of 10

3. Which of the following does not cause losses in optical fibre cables?

Microbending

Stepped index operation

Scattering

Light absorption

Question 3 of 10

Question 4 of 10

4. Inherently most noise resistant modulating system is _________

SSB

PCM

VSB

DSB

Question 4 of 10

Question 5 of 10

5. The adverse effect of noise in communication system can be seen in ________

receiver

source

transmitter

channel

Question 5 of 10

Question 6 of 10

6. For getting maximum undistorted transmitted power in a carrier wave, the value of modulation should be _________

0.2

0.8

0.5

Question 6 of 10

Question 7 of 10

7. For telegraphy pulse code modulation (PCM) is widely used.

True

False

Question 7 of 10

Question 8 of 10

8. Pulse communication system that is inherently highly immune to noise is ________

PAM

PWM

PPM

PCM

Question 8 of 10

Question 9 of 10

9. Companding is used in PCM transmitters to overcome quantizing noise in PCM.

True

False

Question 9 of 10

Question 10 of 10

10. Frequency modulated broadcast band generally lies in ________

VHF

SHF

Question 10 of 10