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 The direction of electron current flow is: from negative to positive from neutral to positive None of these from positive to negative from right to left from negative to positive from neutral to positive None of these from positive to negative from right to left ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? None of these Rectify line voltage Amplify weak signals Regulate voltage Emit light None of these Rectify line voltage Amplify weak signals Regulate voltage Emit light ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of conventional current flow is: from positive to negative from negative to positive from neutral to positive None of these from left to right from positive to negative from negative to positive from neutral to positive None of these from left to right ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: they have the same amplitude and frequency their waveforms cross through zero and reach positive and negative peaks at the same time All of these None of these their waveforms are both ac or both dc they have the same amplitude and frequency their waveforms cross through zero and reach positive and negative peaks at the same time All of these None of these their waveforms are both ac or both dc ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitive reactance of a parallel capacitor circuit is: less than the capacitance value of the smallest capacitor None of these equal to the source voltage divided by total current equal to the sum of the individual capacitive-reactance values equal to the sum of the individual capacitance values less than the capacitance value of the smallest capacitor None of these equal to the source voltage divided by total current equal to the sum of the individual capacitive-reactance values equal to the sum of the individual capacitance values ANSWER DOWNLOAD EXAMIANS APP
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