Answer Happy

1) Calculate the phasor currents I₁ and I₂ in the circuit shown below. j692 12/0° V -j69 j62 j6n2 192 2) If the 1 Ohm resistor of the figure above is substituted by a potentiometer (variable resistor) of value Rvar, what's the value of Rvar to guarantee a current 1₁ and 1₂ with the same magnitude. All the other parameters remains the same. 3) When dealing with transformers, there are two experiments you can do to estimate the parameters of a specific transformer: (a) short-circuit test and (b) open-circuit test. These two experiments are important steps towards modeling a real device. With the goal to emulate one of the experiments mentioned above, calculate the mesh currents if the resistor of 1 Ohms is substituted by: (a) a short- circuit represented by a small resistance of 0.01 Ohm, and (b) an open circuit represented by a very large inductance of 100 k Ohm.