Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Free electrons Doping Valence electrons None of these Thermal energy Free electrons Doping Valence electrons None of these Thermal energy 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? None of these 707 V 208 V 651 V 700 V None of these 707 V 208 V 651 V 700 V 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 negative charge and a proton has no charge None of these An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has no charge An electron has a negative charge and a proton has no charge None of these An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has no charge ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.2 mA None of these 3.75 mA 13 mA 0.05 mA 3.2 mA None of these 3.75 mA 13 mA 0.05 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating above its resonant frequency, a series RLC circuit has the characteristics of a: purely resistive circuit None of these series RC circuit series RL circuit series RLC circuit operated below its resonant frequency purely resistive circuit None of these series RC circuit series RL circuit series RLC circuit operated below its resonant frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How many protons does the nucleus of a silicon atom contain? None of these 14 4 29 48 None of these 14 4 29 48 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS