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? None of these 300 mA 7.8 mA 200 mA 208 mA None of these 300 mA 7.8 mA 200 mA 208 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitive reactance of a parallel capacitor circuit is: equal to the source voltage divided by total current equal to the sum of the individual capacitive-reactance values equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor None of these equal to the source voltage divided by total current equal to the sum of the individual capacitive-reactance values equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor None of these 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 The total current is less than the sum of the currents through the resistance and inductance None of these The total current is equal to 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 The total current is less than the sum of the currents through the resistance and inductance None of these The total current is equal to 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 What is the turns ratio for the transformer specified in the above question? 0.575 None of these 0.707 10.738 1.5 0.575 None of these 0.707 10.738 1.5 ANSWER DOWNLOAD EXAMIANS APP
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? 208 V 700 V 651 V 707 V None of these 208 V 700 V 651 V 707 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a parallel circuit? The total voltage in a parallel circuit is equal to the average value of the individual voltages The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit None of these The total voltage in a parallel circuit is equal to the average value of the individual voltages The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit None of these ANSWER DOWNLOAD EXAMIANS APP
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