Electronic Principles Voltage is The flow of charged particles through a material The number of free electrons in an atom Trie force that causes electrons to flow The smallest electrically charged particle None of these The flow of charged particles through a material The number of free electrons in an atom Trie force that causes electrons to flow The smallest electrically charged particle None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Valence electrons Thermal energy Free electrons Doping None of these Valence electrons Thermal energy Free electrons Doping None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? Capacitive reactance provides the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage leads the current by 90 degree Capacitive reactance provides the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage leads the current by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: None of these 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 their waveforms are both ac or both dc None of these 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 their waveforms are both ac or both dc 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? None of these 18 V 12 V 24 V 30 V None of these 18 V 12 V 24 V 30 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles 1 Microfarad is the same as: 1 millionth of a picofarad None of these 1 million picofarads 1 million farads 1000 millifarads 1 millionth of a picofarad None of these 1 million picofarads 1 million farads 1000 millifarads ANSWER DOWNLOAD EXAMIANS APP
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