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The transformer exciting current has two compollents, magnetizing component and core-loss component. Neglecting impedance drop | |
A. | both of them are in phase with the supply voltage. [Wrong Answer] |
B. | the former lags the supply voltage by 90° while the latter is in phase with supply voltage. [Correct Answer] |
C. | both of them lag the supply voltage by 90°. [Wrong Answer] |
D. | the former is in phase with the supply voltage while the latter lags the supply voltage by 90°. [Wrong Answer] |