Capacitors - General Questions (3)

Directions to Solve

Capacitors - General Questions

17.

If a charged capacitor is disconnected from a circuit, it will:

A.	immediately discharge
B.	recharge
C.	remain charged
D.	leak the charge

Answer: Option D

Explanation:

No answer description available for this question.

18.

What do variable capacitors use for dielectric?

A.	ceramic, electrolytic, mica, or paper
B.	air, ceramic, mica, or plastic
C.	ceramic, paper, plastic, or mica
D.	mica, ceramic, plastic, or electrolytic

Answer: Option B

Explanation:

No answer description available for this question

19.

Which of the following is the reference vector for parallel RC circuits?

A.	R
B.	I
C.	C
D.	V

Answer: Option D

Explanation:

No answer description available for this question

20.

A practical capacitor

A.	is a short to dc
B.	looks like a capacitor in parallel with a resistor
C.	is an open to ac
D.	stores energy in a magnetic field

Answer: Option B

Explanation:

No answer description available for this question

21.

What is the reactive power?

mcq7_1036_1

A.	6.8 mW
B.	9.8 mW
C.	12.8 mW
D.	15.8 mW

Answer: Option B

Explanation:

No answer description available for this question

22.

What is the impedance of this circuit?
mcq7_1034_1u (1)

A.	5928
B.	2000
C.	1902
D.	1798

Answer: Option A

Explanation:

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

So,

X_c = 1/2πfC.

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

X_c = 3184.7.

Z = Sqrt( X_c² + R² ).

Z = Sqrt( 3184.7² + 5000² ).

Z = 5928 Ω.

23.

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?

A.	bandpass
B.	low-pass
C.	high-pass
D.	band-stop

Answer: Option C

Explanation:

No answer description available for this question

24.

What is the circuit's impedance?

mcq7_1039_1

A.	1192
B.	843
C.	723
D.	511

Answer: Option A

Explanation:

No answer description available for this question.

Capacitors - General Questions (3)

Capacitors - General Questions

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