Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 707 V 651 V None of these 208 V 700 V 707 V 651 V None of these 208 V 700 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? The ac voltage lags the current by 90 degree Resistances provide the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow Inductive reactance provides the only opposition to current flow None of these The ac voltage lags the current by 90 degree Resistances provide the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow Inductive reactance provides the only opposition to current flow None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage? 7.5 V None of these 16 V 3 V 8 V 7.5 V None of these 16 V 3 V 8 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit? Retentivity Permeance Permeability There is no valid comparison Reluctance Retentivity Permeance Permeability There is no valid comparison Reluctance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A farad is defined as the amount of capacitance necessary for: causing an ac phase shift greater than 90 degree dissipating 1 W of power storing 1 V for 1 second None of these changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing causing an ac phase shift greater than 90 degree dissipating 1 W of power storing 1 V for 1 second None of these changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The Thevenin resistance is equal in value to the Open-load resistance Load resistance Half the load resistance Internal resistance of a Morton circuit None of these Open-load resistance Load resistance Half the load resistance Internal resistance of a Morton circuit None of these ANSWER DOWNLOAD EXAMIANS APP
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