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One sine wave has a positive peak at 75⁰, and another has a positive peak at 100⁰. How much is second sine wave shifted in phase from the 0⁰ reference?(a) lags reference angle by 15⁰(b) leads reference angle by 15⁰(c) lags reference angle by 10⁰(d) leads reference angle by 10⁰This question was posed to me in examination.This key question is from Phase Relation in a Pure Resistor topic in division Introduction to Alternating Currents and Voltages of Network Theory

Answer»

The correct option is (a) LAGS REFERENCE angle by 15⁰

Explanation: As FIRST sine WAVE has a positive peak at 75⁰, and another has a positive peak at 100⁰. SECOND sine wave lags reference angle by 15⁰ from the 0⁰ reference.



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