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Complex AC MCQs

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Practice free Complex AC multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 216 questions — no login required.

Question 10easy

A 500 V sine wave generator appears across a 10 ki2 resistor. What is the instantaneous current in the resistor at a phase angle of 35??

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Question 11easy

The instantaneous value of i(t) = 16 sin (2 n x 18 x 104 t? 15?) mA at t = 2 ps is

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Question 12easy

An electric bulb rated at 220 V is connected to 220 V, 5 Hz a.c. source. Then the bulb

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Question 13easy

The purpose of choke in a flourescent tube is

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Question 14easy

The power factor of an a.c. circuit is given by

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Question 15easy

The active and reactive components of line current of an inductive circuit are equal. The power factor of the circuit is

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Question 16easy

In an R-L series circuit, the two sides of the impedance triangle that form the phase angle are