Element 3: General Radiotelephone

effective 6/25/2009

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3-C-020: Capacitors

3-20C1: What factors determine the capacitance of a capacitor?

Distance between the plates and the dielectric constant of the material between the plates.

Voltage on the plates and distance between the plates.

Voltage on the plates and the dielectric constant of the material between the plates.

Amount of charge on the plates and the dielectric constant of the material between the plates.



Figure 3C4

3-20C2: In Figure 3C4, if a small variable capacitor were installed in place of the dashed line, it would?

Decrease parasitic oscillations.

Increase gain.

Increase parasitic oscillations.

Decrease crosstalk.



3-20C3: In Figure 3C4, which component (labeled 1 through 4) is used to provide a signal ground?

2

1

3

4



Figure 3C5

3-20C4: In Figure 3C5, which capacitor (labeled 1 through 4) is being used as a bypass capacitor?

3

1

2

4



3-20C5: In Figure 3C5, the 1 µF capacitor is connected to a potentiometer that is used to:

Adjust tone.

Increase gain.

Neutralize amplifier.

Couple.



3-20C6: What is the purpose of a coupling capacitor?

It blocks direct current and passes alternating current.

It blocks alternating current and passes direct current.

It increases the resonant frequency of the circuit.

It decreases the resonant frequency of the circuit.





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