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 The total capacitive reactance of a parallel capacitor circuit is: None of these less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values equal to the source voltage divided by total current equal to the sum of the individual capacitance values None of these less than the capacitance value of the smallest capacitor equal to the sum of the individual capacitive-reactance values equal to the source voltage divided by total current equal to the sum of the individual capacitance values ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 300 mA 208 mA 7.8 mA 200 mA None of these 300 mA 208 mA 7.8 mA 200 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Increases Stays the same None of these 0oC Decreases Increases Stays the same None of these 0oC Decreases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In an intrinsic semiconductor, the number of free electrons Equals the number of holes Impossible to say Is less than the number of holes None of these Is greater than the number of holes Equals the number of holes Impossible to say Is less than the number of holes None of these Is greater than the number of holes ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between the kinds of charges for an electron and a proton? An electron has a positive charge and a proton has a negative charge None of these An electron has a positive charge and a proton has no charge An electron has a negative charge and a proton has no charge An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has a negative charge None of these An electron has a positive charge and a proton has no charge An electron has a negative charge and a proton has no charge An electron has a negative charge and a proton has a positive charge ANSWER DOWNLOAD EXAMIANS APP
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