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? 651 V 208 V 700 V None of these 707 V 651 V 208 V 700 V None of these 707 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the currents in a parallel RL circuit? The current always has the same amplitude and phase for every part of the circuit None of these The total current is equal to the sum of the currents through the resistance and inductance The total current is less than the sum of the currents through the resistance and inductance The total current leads the total voltage by less than 90 The current always has the same amplitude and phase for every part of the circuit None of these The total current is equal to the sum of the currents through the resistance and inductance The total current is less than the sum of the currents through the resistance and inductance The total current leads the total voltage by less than 90 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The barrier potential accross each depletion layer is None of these 0.7 V 0.8 V 20 V None of these 0.7 V 0.8 V 20 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The graph of current gain versus collector current indicates that the current gain varies enormously None of these varies slightly equals the collector current divided by the base current is contant varies enormously None of these varies slightly equals the collector current divided by the base current is contant ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements regarding ac circuits is correct? Current leads the voltage through a resistor Current lags the voltage through a resistor None of these Current and voltages are in phase through a resistor All of these Current leads the voltage through a resistor Current lags the voltage through a resistor None of these Current and voltages are in phase through a resistor All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a series RLC circuit: is minimum at the resonant frequency always increases as the applied frequency increases always decreases as the applied frequency increases None of these is maximum at the resonant frequency is minimum at the resonant frequency always increases as the applied frequency increases always decreases as the applied frequency increases None of these is maximum at the resonant frequency ANSWER DOWNLOAD EXAMIANS APP
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