Q. Inductance of a coil Varies
✅ Correct Answer: (D)
all of the above
Circuits and Circuit Theory MCQs | Page - 1
Dear candidates you will find MCQ questions of Circuits and Circuit Theory here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to
✅ Correct Answer: (B)
r.m.s. voltage
Q. A parallel AC. circuit in resonance will
✅ Correct Answer: (B)
have a high impedance
Q. A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to
✅ Correct Answer: (D)
the statement is incorrect
Q. A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to
✅ Correct Answer: (D)
the statement given is false
Q. A sine wave has a frequency of 50 Hz. Its angular frequency is _________ radian/second.
✅ Correct Answer: (A)
100 n
Q. All definitions of power factor of a series R-L-C circuit are correct except
✅ Correct Answer: (A)
ratio of net reactance and impedance
Q. All the rules and laws of D.C. circuit also apply to A.C. circuit containing
✅ Correct Answer: (C)
resistance only
Q. An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms,
✅ Correct Answer: (C)
both resistance and inductance carry equal currents
Q. Aphasoris
✅ Correct Answer: (A)
a line which represents the magnitude and phase of an alternating quantity
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