AC Fundamentals Circuits and Circuit Theory MCQ
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AC circuit MCQ questions with explanation AC circuit objective questions with answers AC circuit multiple choice questions.
- A coil with large distributed capacitance
- A coil with low resistance
- A coil with low distributed capacitance
- A coil with large resistance
Question 1: Which of the following coil will have large resonant frequency?
Answers: A coil with low distributed capacitance
- all above are correct
- exchange of power takes place between inductor and supply line
- power is consumed in resistance and is equal to I²R
- exchange of power takes place between capacitor and supply line
Question 2: In a R-L-C circuit?
Answers: all above are correct
- 180º
- 0º
- 60º
- 90º
Question 3: The power consumed in a circuit element will be least when the phase difference between the current and voltage is?
Answers: 90º
- infinite
- minimum
- zero
- maximum
Question 4: In a series resonant circuit, the impedance of the circuit is?
Answers: minimum
- inductance
- both (a) and (d)
- resistance
- capacitance
Question 5: Power factor of the following circuit will be unity?
Answers: resistance
- 222 V
- 200 V
- 282 V
- 346 V
Question 6: For 200 V RMS value-triangular wave, the peak voltage will be?
Answers: 346 V
- at all the time of operation
- at the time of turning on and off
- only at the time of turning off
- only at the time of turning on
Question 7: Inductance affects the direct current flow?
Answers: at the time of turning on and off
- instantaneous power
- reactive power
- true power
- volt-amperes
Question 8: The product of apparent power and cosine of the phase angle between circuit voltage and current is ?
Answers: true power
- voltage
- frequency
- current
- power
Question 9: The purpose of a parallel circuit resonance is to magnify ?
Answers: voltage
- current can lead or lag the voltage by 90°
- current leads the voltage by 90º
- current lags behind the voltage by 90º
- current is in phase with the voltage
Question 10: In a pure resistive circuit?
Answers: current is in phase with the voltage
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Total Questions Attempted: 0
Correct: 0 Wrong: 0
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