4.
A 1000Hz symmetrical square wave will be reproduced
satisfactorily if it contains 10 odd harmonics added to the
fundamental frequency. If such a square wave's frequency is
changed to 50 Hz, how many odd harmonics must be added to obtain
the same quality of reproduction?
a.
5.
b.
10.
c.
20.
d.
40.
5.
Assume that an amplifier circuit is being used to increase the
refers to the
a.
range of frequencies that the circuit will pass.
b.
number of sawtooth waveforms that the circuit will pass.
c.
and still afford good reproduction.
d.
and still afford good reproduction.
6.
Assume that a square wave is being applied to an amplifier
circuit. How will the square wave be affected if the high
frequency response of the circuit is decreased?
a.
The pulse repetition frequency will increase.
b.
The rise time of the output pulse will decrease.
c.
The decay time of the output pulse will decrease.
d.
The duration period of the output pulse will decrease.
7.
If a circuit is designed to produce the square wave shown in
Figure 14, the fundamental sinewave frequency used must be
a.
100 Hz.
b.
1000 Hz.
c.
10,000 Hz.
d.
100,000 Hz.
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