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A sine wave completes quarter cycle in ____ radians.

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A sine wave completes quarter cycle in ____ radians.

(a) 2π

(b) π

(c) π/2

(d) π/4

The question was asked at a job interview.

The origin of the question is Angular Relation of a Sine Wave in portion Introduction to Alternating Currents and Voltages of Network Theory

1 Answer

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The correct choice is (d) π/4

To explain: The period of a sine wave is 360⁰ or 2π radians. So, a sine wave takes 45⁰ or π/4 radians to complete a quarter cycle.

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