Singletone SSB Modulation MCQ’s

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This set of Analog Communication Multiple Choice Questions & Answers (MCQs) focuses on “Singletone SSB Modulation”.

1. In case of FM, if the modulating frequency is lowered and the modulating voltage remains constant then the amplitude of distant sidebands first increases and then decreases.
a) True
b) False

2. Skip distance depends on the time of day.
a) True
b) False

3. PDM can be generated by either free running multi-vibrator or monostable multi-vibrator.
a) True
b) False

4. Leak type bias is used in plate modulated amplifier to ________
a) increase bandwidth
b) decrease bandwidth
c) prevent tuning
d) prevent excessive grid current

5. A woofer is connected from the input through a ________
a) high pass filter
b) low pass filter
c) band pass filter
d) band stop filter

6. If the length of antenna is equal to whole wavelength the radiation is zero in all direction.
a) True
b) False

7. Full duplex operation allows transmission in only one direction at the same time.
a) True
b) False

8. Which of the following is used for attenuating high frequencies?
a) shunt resistance
b) shunt inductance
c) series capacitance
d) shunt capacitance

9. For getting zero radiation at right angles, length of antenna should be __________
a) ʎ
b) ʎ8
c) ʎ4
d) ʎ5

10. What is the commercial frequency deviation of frequency modulation?
a) 70 KHz
b) 75 KHz
c) 80 KHz
d) 85 KHz

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