Answer / ujjwala sharma

its simply written by "cos$"....ratio of R(resistence) and Z
(impedence)
cos$=R/Z

i just wanted to ask that what should one do to clear all the concepts a mechanical engineer needs to have cleared,this not only includes the concepts of each and every semester of his engineering course, but also the basic laws and fundamentals of physics(that required for Mechanical engineering).I am a third year mechanical engineering student and i am very keen to know about the above question. somebody please help me.

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