1.

When one sine wave passes through the zero following the other, it is _________(a) Leading(b) Lagging(c) Neither leading nor lagging(d) Either leading or laggingThe question was posed to me at a job interview.Enquiry is from Representation of an Alternating Quantity by a Phasor in chapter Alternating Voltage and Current of Basic Electrical Engineering

Answer»

The correct answer is (b) Lagging

To explain I would say: The sine WAVE is said to lag because it passes though ZERO following the other, hence it crosses zero after the first wave, THEREFORE it is said to lag.



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