Electronic Principles In a pure inductor: ac current leads the voltage by 90 degree None of these ac current and voltage are exactly in phase ac current is converted to dc voltage ac current lags the voltage by 90 degree ac current leads the voltage by 90 degree None of these ac current and voltage are exactly in phase ac current is converted to dc voltage ac current lags the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 7.8 mA 208 mA None of these 200 mA 300 mA 7.8 mA 208 mA None of these 200 mA 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A dielectric material is: a good insulator a good conductor of magnetic fields a poor conductor of electrostatic fields None of these a good conductor a good insulator a good conductor of magnetic fields a poor conductor of electrostatic fields None of these a good conductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The Thevenin resistance is equal in value to the None of these Open-load resistance Half the load resistance Load resistance Internal resistance of a Morton circuit None of these Open-load resistance Half the load resistance Load resistance Internal resistance of a Morton circuit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.3 A 0.2 A 0.6 A 0.4 A None of these 0.3 A 0.2 A 0.6 A 0.4 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating above its resonant frequency, a series RLC circuit has the characteristics of a: purely resistive circuit None of these series RC circuit series RLC circuit operated below its resonant frequency series RL circuit purely resistive circuit None of these series RC circuit series RLC circuit operated below its resonant frequency series RL circuit ANSWER DOWNLOAD EXAMIANS APP
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