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? None of these 310 Ohm 400 Ohm 410 Ohm 550 Ohm None of these 310 Ohm 400 Ohm 410 Ohm 550 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current? 1750 mA None of these 1.75 mA 17.5 mA 175 mA 1750 mA None of these 1.75 mA 17.5 mA 175 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values? 9.3 W None of these 0.93 W 0.041666666666667 0.93 V 9.3 W None of these 0.93 W 0.041666666666667 0.93 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely inductive circuit? Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree Resistances provide the only opposition to current flow None of these Combinations of resistance and inductive reactance provide any opposition to current flow Inductive reactance provides the only opposition to current flow The ac voltage lags the current by 90 degree Resistances provide the only opposition to current flow None of these Combinations of resistance and inductive reactance provide any opposition to current flow ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 85 9 81 None of these 6 85 9 81 None of these 6 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 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 equal to the sum of the resistance and capacitive reactance None of these The impedance is greater than 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 equal to the sum of the resistance and capacitive reactance None of these The impedance is greater than the sum of the resistance and capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
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