Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? None of these Thermal energy Valence electrons Free electrons Doping None of these Thermal energy Valence electrons Free electrons Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The barrier potential accross each depletion layer is 0.7 V 0.8 V None of these 20 V 0.7 V 0.8 V None of these 20 V 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? None of these 0.17 V 20 V 18.8 V 10.17 V None of these 0.17 V 20 V 18.8 V 10.17 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a series circuit? The total voltage of a series circuit is equal to the total current divided by the total resistance The total voltage is equal to the sum of the individual voltages in a series circuit None of these The total voltage in a series circuit is always less than the value of the smallest voltage The total voltage in a series circuit is equal to the average value of the individual voltages The total voltage of a series circuit is equal to the total current divided by the total resistance The total voltage is equal to the sum of the individual voltages in a series circuit None of these The total voltage in a series circuit is always less than the value of the smallest voltage The total voltage in a series circuit is equal to the average value of the individual voltages ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 30 V 24 V 18 V 12 V None of these 30 V 24 V 18 V 12 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: thermocouple piezoelectric devices chemical cell None of these solar cell thermocouple piezoelectric devices chemical cell None of these solar cell ANSWER DOWNLOAD EXAMIANS APP
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