Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 9 6 81 85 None of these 9 6 81 85 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the impedance of a series RC circuit? The impedance is equal to the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is less than the sum of the resistance and capacitive reactance The impedance is greater than the sum of the resistance and capacitive reactance None of these The impedance is equal to the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is less than the sum of the resistance and capacitive reactance The impedance is greater than the sum of the resistance and capacitive reactance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely inductive circuit: doubles the amount of current through the inductors has no effect on the current through the inductors cuts the current through the inductors one-half None of these increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit doubles the amount of current through the inductors has no effect on the current through the inductors cuts the current through the inductors one-half None of these increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 3 2 43922 43891 None of these 3 2 43922 43891 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 410 Ohm 310 Ohm 550 Ohm 400 Ohm None of these 410 Ohm 310 Ohm 550 Ohm 400 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitive reactance of a parallel capacitor circuit is: equal to the sum of the individual capacitive-reactance values None of these equal to the sum of the individual capacitance values equal to the source voltage divided by total current less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values None of these equal to the sum of the individual capacitance values equal to the source voltage divided by total current less than the capacitance value of the smallest capacitor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS