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Electronics
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Capacitors
Comments
Question
A ___ capacitor allows ac signals to pass while blocking dc signals.
Options
A. filter
B. bypass
C. decoupling
D. coupling
Correct Answer
coupling
Capacitors problems
Search Results
1. The basic capacitor is made up of ___ that separates two conductive plates.
Options
A. a conductor
B. a spacer
C. a dielectric
D. an electrode
Show Answer
Scratch Pad
Discuss
Correct Answer: a dielectric
2.
The total circuit reactance is ______ in the given circuit.
Options
A. 50 Ω
B. 140 Ω
C. 265 Ω
D. 676 Ω
Show Answer
Scratch Pad
Discuss
Correct Answer: 265 Ω
3. The ___ of a capacitor affects the time it takes to charge and discharge.
Options
A. package style
B. lead arrangement
C. plate area
D. voltage rating
Show Answer
Scratch Pad
Discuss
Correct Answer: plate area
4. A circuit whose output voltage is proportional to the rate of change of the input voltage is called a(n) ______ .
Options
A. differentiator
B. integrator
C. curve averager
D. mixer
Show Answer
Scratch Pad
Discuss
Correct Answer: differentiator
5. The ______ the area of the plates, the greater the number of electrons and ______ that can be stored.
Options
A. larger, charge
B. smaller, charge
C. larger, polarity
D. smaller, polarity
Show Answer
Scratch Pad
Discuss
Correct Answer: larger, charge
6. If a 5 V, 60 Hz voltage is applied to a 4.7 µF capacitor, the circuit current will be ______ .
Options
A. 0.886 mA
B. 8.86 mA
C. 8.86 µA
D. 88.6 µA
Show Answer
Scratch Pad
Discuss
Correct Answer: 8.86 mA
7. ___ capacitors have the highest values of capacitance.
Options
A. Electrolytic
B. Ceramic
C. Plastic-film
D. Mica
Show Answer
Scratch Pad
Discuss
Correct Answer: Electrolytic
8. The resonant frequency f
o
is 19 kHz.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
9. When inductive and capacitive reactance are present in the same series circuit, the magnitude of the total reactance is equal to the sum of the magnitudes of the individual reactances.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
10. The quality factor of a parallel circuit at resonance is V
C
/V
S
or V
L
/V
S
.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
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