RC Circuits MCQ Questions & Answers | Electrical Engineering Page-4 section-1

31.
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is

A. 212 Ω

B. 2.12 mS + j3.14 mS

C. 3.14 mS + j2.12 mS

D. 318.3 Ω

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32.
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

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33.
A complex number represents a phasor quantity.

A. True

B. False

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34.
The resistor voltage is always out of phase with the current.

A. True

B. False

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35.
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

A. Increases

B. Decreases

C. Remains the same

D. Becomes erratic

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36.
A filter passes all frequencies.

A. True

B. False

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37.
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

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38.
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.

A. True

B. False

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39.
Point +4 on the complex plane is

A. 4 units above the origin on the j axis

B. 4 units below the origin on the j axis

C. 4 units right of the origin on the real axis

D. 4 units left of the origin on the real axis

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40.
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?

A. 37.9 Ω

B. 3.7 Ω

C. 14,400 Ω

D. 4,800 Ω

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RC Circuits MCQ Questions & Answers | Electrical Engineering

31. A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is

Answer & Solution

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

Answer & Solution

33. A complex number represents a phasor quantity.

Answer & Solution

34. The resistor voltage is always out of phase with the current.

Answer & Solution

35. When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

Answer & Solution

36. A filter passes all frequencies.

Answer & Solution

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

Answer & Solution

38. Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.

Answer & Solution

39. Point +4 on the complex plane is

Answer & Solution

40. A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?

Answer & Solution

31.
A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is

32.
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is

33.
A complex number represents a phasor quantity.

34.
The resistor voltage is always out of phase with the current.

35.
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

36.
A filter passes all frequencies.

37.
What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?

38.
Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.

39.
Point +4 on the complex plane is

40.
A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?