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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-3 section-1

21
A 47 Ω resistor and a capacitor with a capacitive reactance of 120 Ω are in series across an ac source. What is the circuit impedance, Z?
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Answer: Option A
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22
In the complex plane, the number 4 + j3 is located in the
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Answer: Option A
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23
In the complex plane, the number 14 - j5 is located in the
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Answer: Option D
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24
The polar form of a complex number consists of a real part and a j part.
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Answer: Option B
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25
Complex numbers can be added and subtracted but not multiplied or divided.
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Answer: Option B
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26
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
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Answer: Option C
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27
An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:
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Answer: Option C
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28
A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 kΩ. Current flow in the circuit is
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Answer: Option C
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29
The power factor (PF) indicates how much of the apparent power is true power.
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Answer: Option A
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30
A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is
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Answer: Option B
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