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? 700 V 651 V 707 V None of these 208 V 700 V 651 V 707 V None of these 208 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? Combinations of resistance and inductive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage lags the current by 90 degree Inductive reactance provides the only opposition to current flow Combinations of resistance and inductive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage lags the current by 90 degree Inductive reactance provides the only opposition to current flow ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 12 V 30 V 18 V None of these 24 V 12 V 30 V 18 V None of these 24 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? Emit light Rectify line voltage Amplify weak signals Regulate voltage None of these Emit light Rectify line voltage Amplify weak signals Regulate voltage None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the collector current increases, what does the current gain do? any of the above None of these stays the same increases decreases any of the above None of these stays the same increases decreases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the currents in a parallel RL circuit? The total current is less than the sum of the currents through the resistance and inductance None of these The total current leads the total voltage by less than 90 The total current is equal to the sum of the currents through the resistance and inductance The current always has the same amplitude and phase for every part of the circuit The total current is less than the sum of the currents through the resistance and inductance None of these The total current leads the total voltage by less than 90 The total current is equal to the sum of the currents through the resistance and inductance The current always has the same amplitude and phase for every part of the circuit ANSWER DOWNLOAD EXAMIANS APP
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