Indicate in which one of the following only one

6. Indicate in which one of the following only one sideband is
transmitted.
a. H3E
b. A3E
c. B8E
d. C3F

7. One of the following cannot be used to remove the unwanted sideband in
SSB. This is the
8. R3E modulation is sometimes used to
9. To provide two or more voice circuits with the same carrier, it is
necessary to use
10. Vestigal sideband modulation (C3F) is normally used for
a. HF point-to-point communications
b.monoaural broadc
c. TV broadcasting
asting
d. stereo broadcasting

FREQUENCY MODULATION
1. In the stabilize reactance modulator AFC system,
2. In the spectrum of a frequency-modulated wave
3. The difference between phase and frequency modulation
4. Indicate the false statement regarding the Armstrong modulation system
a. The system is basically phase, not frequency modulation,
b. AFC is not needed, as crystal oscillator is used.
c.Frequency multiplication mus
d. Equalization is unnecessary
t be used.
5. An FM signal with a modulation index m
f
is passed through a frequency
tripler. The wave in the output of the tripler will have a modulation
index of
6. An FM signal with a deviation δ is passed through a mixer, and has its
frequency reduced fivefold. The deviation in the output of the mixer is
7. A pre-emphasis circuit provides extra noise immunity by