a 100kVA, 1000/400 v single phase transformer when excited at rated voltage side draws a no-load of 3A at 0.5 lagging power factor. If it is excited from the low voltage side, determine the no-load current, and power input

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14