Title: GR8677.064 Post by: conantee on January 06, 2010, 11:54:56 AM 64. An alternating current electrical generator has a fixed internal impedance
![]() ![]() ![]() ![]() ![]() (A) ![]() (B) ![]() (C) ![]() (D) ![]() (E) ![]() Title: Re: GR8677.064 Post by: conantee on October 11, 2010, 11:51:03 AM Don't be scared by complex numbers. Just do everything as if they are real numbers. Then, when we want to extract the information from the calculation, just consider real part.
Suppose the voltage from generator is ![]() ![]() ![]() The current in the circuit is now just ![]() Power to the load is just ![]() Now, ![]() ![]() Hence, to make imaginary part of ![]() ![]() The correct answer is (C). Only 22 of 100 people answer correctly. |