RC Circuits - General Questions (3)

Directions to Solve

RC Circuits - General Questions

17.

What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?

A.	4.24
B.	3.46
C.	2.16
D.	21.63

Answer: Option D

Explanation:

No answer description available for this question.

18.

A 47 Ω resistor and a capacitor with a capacitive reactance of 120Ω are in series across an ac source. What is the circuit impedance, Z?

A.	129 Ω
B.	12.9 Ω
C.	167 Ω
D.	73 Ω

Answer: Option A

Explanation:

No answer description available for this question.

19.

When the frequency of the source voltage decreases, the impedance of a parallel RC circuit

A.	increases
B.	decreases
C.	does not change
D.	decreases to zero

Answer: Option A

Explanation:

No answer description available for this question.

20.

In the complex plane, the number 4 + j3 is located in the

A.	first quadrant
B.	second quadrant
C.	third quadrant
D.	fourth quadrant

Answer: Option A

Explanation:

No answer description available for this question.

21.

The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency

A.	must be increased
B.	must be decreased
C.	is held constant
D.	has no effect

Answer: Option B

Explanation:

No answer description available for this question.

22.

A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is

A.	0 Hz
B.	12 kHz
C.	6 kHz
D.	18 kHz

Answer: Option C

Explanation:

No answer description available for this question.

23.

In a series RC circuit, 12 V_(rms) is measured across the resistor and 15 V_(rms) is measured across the capacitor. The rms source voltage is

A.	3 V
B.	27 V
C.	19.2 V
D.	1.9 V

Answer: Option C

Explanation:

No answer description available for this question.

24.

A positive angle of 30° is equivalent to a negative angle of

A.	–30°
B.	–330°
C.	–60°
D.	–180°

Answer: Option B

Explanation:

No answer description available for this question.

1
2
3
4