Electronic Principles What is the smallest number of polarities required for current flow? Three - negative, positive and neutral terminals Four - two negative and two positive Two - a negative terminal and a positive terminal None of these One - a negative terminal Three - negative, positive and neutral terminals Four - two negative and two positive Two - a negative terminal and a positive terminal None of these One - a negative terminal 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? 651 V None of these 700 V 707 V 208 V 651 V None of these 700 V 707 V 208 V 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 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 current always has the same amplitude and phase for every part of the circuit The total current leads the total voltage by less than 90 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 current always has the same amplitude and phase for every part of the circuit The total current leads the total voltage by less than 90 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has many holes No holes many free electrons None of these a few free electrons and holes many holes No holes many free electrons None of these a few free electrons and holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductive reactance of a parallel inductor circuit is: None of these equal to the source voltage divided by total current less than the inductance value of the smallest inductor equal to the sum of the individual inductance values equal to the sum of the individual inductive-reactance values None of these equal to the source voltage divided by total current less than the inductance value of the smallest inductor equal to the sum of the individual inductance values equal to the sum of the individual inductive-reactance values ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? 4.73 600 V None of these 24 V 0.4 V 4.73 600 V None of these 24 V 0.4 V ANSWER DOWNLOAD EXAMIANS APP
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