Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Doping Valence electrons Free electrons Thermal energy None of these Doping Valence electrons Free electrons Thermal energy None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: None of these All of these their waveforms are both ac or both dc their waveforms cross through zero and reach positive and negative peaks at the same time they have the same amplitude and frequency None of these All of these their waveforms are both ac or both dc their waveforms cross through zero and reach positive and negative peaks at the same time they have the same amplitude and frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of electron current flow is: from negative to positive None of these from neutral to positive from positive to negative from right to left from negative to positive None of these from neutral to positive from positive to negative from right to left ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The net charge of a neutral copper atom is 1 4 -1 None of these 1 4 -1 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff? 20 Ohm 10 Ohm 100 Ohm 30 Ohm None of these 20 Ohm 10 Ohm 100 Ohm 30 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being consumed at the secondary winding of the transformer described in question 91? None of these 200 W 20 W 100 W 1000 W None of these 200 W 20 W 100 W 1000 W ANSWER DOWNLOAD EXAMIANS APP
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