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RC Circuits MCQ Questions & Answers | Electrical Engineering

Learn RC Circuits MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. RC Circuits MCQ question is the important chapter for a Electrical Engineering and GATE students. Page-2 section-1

11
In a series RC circuit, when the frequency and the resistance are halved, the impedance
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Answer: Option D
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12
A 2 kΩ resistor is in series with a 0.015 µF capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?
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Answer: Option C
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13
What is the angular difference between +j4 and -j4?
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Answer: Option C
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14
The impedance of a series RC circuit varies directly with frequency.
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Answer: Option B
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15
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
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Answer: Option A
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16
The circuit phase angle is the angle between the total current and the applied (source) voltage.
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Answer: Option A
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17
A capacitor with 150 ohm of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
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Answer: Option C
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18
A 12 kΩ resistor is in series with a 0.02 µF capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.3 ∠0° mA, what is the source voltage expressed in polar form?
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Answer: Option D
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19
An imaginary number is one that exists only in the mind of the mathematician.
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Answer: Option B
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20
For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is
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Answer: Option B
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