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Electronics - Capacitors

Exercise : Capacitors - General Questions
51.
What is the circuit's impedance?

1192
843
723
511
Answer: Option
Explanation:
No answer description is available. Let's discuss.
52.
In an ac circuit, a capacitor and an output resistor are connected in series with an ac signal. What filter action will be the result?
bandpass
low-pass
high-pass
band-stop
Answer: Option
Explanation:
No answer description is available. Let's discuss.
53.
What is the impedance of this circuit?

5928
2000
1902
1798
Answer: Option
Explanation:

Impedance Cannot be Directly Measured, We Need to find Xc first.

So,

Xc = 1/2πfC.

Xc = 1/( 2 x 3.14 x 5000 x 0.01 x 10-6 ).

Xc = 3184.7.

Z = Sqrt( Xc2 + R2 ).

Z = Sqrt( 3184.72 + 50002 ).

Z = 5928 Ω.

54.
What is the reactive power?

6.8 mW
9.8 mW
12.8 mW
15.8 mW
Answer: Option
Explanation:
No answer description is available. Let's discuss.
55.
A practical capacitor
is a short to dc
looks like a capacitor in parallel with a resistor
is an open to ac
stores energy in a magnetic field
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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