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The resultant of two alternating sinusoidal voltages or currents can be found using ___________(a) Triangular law(b) Parallelogram law(c) Either triangular or parallelogram law(d) Neither triangular nor parallelogram lawI had been asked this question by my school teacher while I was bunking the class.This interesting question is from Phasor Diagrams Drawn with RMS Values Instead of Maximum Values topic in section Alternating Voltage and Current of Basic Electrical Engineering |
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Answer» RIGHT OPTION is (b) PARALLELOGRAM law Explanation: The resultant current can be FOUND by using the parallelogram law of additionI^2 = I1^2 + I2^2 + 2I1I2 cosθ. |
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