Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 28.4 mA None of these 24.2 mA 68.4 mA 34.4 mA 28.4 mA None of these 24.2 mA 68.4 mA 34.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the barrier potential of a silicon diode at room temperature? 2 m V per degree Celsius 0.3V 1 V 0.7V None of these 2 m V per degree Celsius 0.3V 1 V 0.7V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91? 1000 W 20 W 100 W 200 W None of these 1000 W 20 W 100 W 200 W None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? None of these Emit light Amplify weak signals Rectify line voltage Regulate voltage None of these Emit light Amplify weak signals Rectify line voltage Regulate voltage 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? 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 0.17 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current lags the voltage by 90 degree ac current is converted to dc voltage ac current leads the voltage by 90 degree None of these ac current and voltage are exactly in phase ac current lags the voltage by 90 degree ac current is converted to dc voltage ac current leads the voltage by 90 degree None of these ac current and voltage are exactly in phase ANSWER DOWNLOAD EXAMIANS APP
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