Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Ohmmeter Wattmeter None of these Ammeter Voltmeter Ohmmeter Wattmeter None of these Ammeter Voltmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 180 0.25 4 0.5 None of these 180 0.25 4 0.5 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? None of these The current in an ac circuit flows in one direction at a steady level The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in two directions at the same time None of these The current in an ac circuit flows in one direction at a steady level The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in two directions at the same time ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductive reactance of a parallel inductor circuit is: None of these less than the inductance value of the smallest inductor equal to the sum of the individual inductive-reactance values equal to the source voltage divided by total current equal to the sum of the individual inductance values None of these less than the inductance value of the smallest inductor equal to the sum of the individual inductive-reactance values equal to the source voltage divided by total current equal to the sum of the individual inductance values ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? many Only those produced by thermal energy None of these less than the free electrons Same number as free electrons many Only those produced by thermal energy None of these less than the free electrons Same number as free electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The net charge of a neutral copper atom is None of these -1 1 4 None of these -1 1 4 ANSWER DOWNLOAD EXAMIANS APP
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