Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Free electrons Thermal energy Valence electrons None of these Doping Free electrons Thermal energy Valence electrons None of these Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements regarding ac circuits is correct? Current lags the voltage through a resistor Current and voltages are in phase through a resistor None of these Current leads the voltage through a resistor All of these Current lags the voltage through a resistor Current and voltages are in phase through a resistor None of these Current leads the voltage through a resistor All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: doubles the amount of total current thrice the amount of total current cuts the total current by one-half has no effect on the total circuit current None of these doubles the amount of total current thrice the amount of total current cuts the total current by one-half has no effect on the total circuit current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How many protons does the nucleus of a silicon atom contain? 48 29 4 14 None of these 48 29 4 14 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature None of these Decreases Stays the same 0oC Increases None of these Decreases Stays the same 0oC Increases 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 equal to the sum of the individual capacitance values None of these 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 equal to the sum of the individual capacitance values None of these equal to the source voltage divided by total current less than the capacitance value of the smallest capacitor ANSWER DOWNLOAD EXAMIANS APP
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