Electronic Principles What is one important thing transistors do? Amplify weak signals Regulate voltage Rectify line voltage Emit light None of these Amplify weak signals Regulate voltage Rectify line voltage Emit light 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? 400 Ohm 550 Ohm 410 Ohm None of these 310 Ohm 400 Ohm 550 Ohm 410 Ohm None of these 310 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The valence electron of a copper atom experiences what kind of attraction toward the nucleus? None of these Strong Weak Impossible to say Neutral None of these Strong Weak Impossible to say Neutral ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltage in a parallel RL circuit? The voltage always has the same amplitude and phase for every part of the circuit The total voltage lags the total current by less than 90 None of these The total voltage is equal to the sum of the voltages across the resistance and inductance The total voltages is less than the sum of the voltages across the resistance and inductance The voltage always has the same amplitude and phase for every part of the circuit The total voltage lags the total current by less than 90 None of these The total voltage is equal to the sum of the voltages across the resistance and inductance The total voltages is less than the sum of the voltages across the resistance and inductance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA? 0.17 V 18.8 V 20 V None of these 10.17 V 0.17 V 18.8 V 20 V None of these 10.17 V 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? 707 V None of these 700 V 651 V 208 V 707 V None of these 700 V 651 V 208 V ANSWER DOWNLOAD EXAMIANS APP
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