Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Wattmeter None of these Ohmmeter Ammeter Voltmeter Wattmeter None of these Ohmmeter Ammeter Voltmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms cross through zero and reach positive and negative peaks at the same time All of these they have the same amplitude and frequency None 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 All of these they have the same amplitude and frequency None of these their waveforms are both ac or both dc ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: None of these multiplies the inductive reactance by 6.28 cuts the inductive reactance in half has no effect on the inductive reactance doubles the amount of inductive reactance None of these multiplies the inductive reactance by 6.28 cuts the inductive reactance in half has no effect on the inductive reactance doubles the amount of inductive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? 100 Ohm Less than 1 Ohm 628 Ohm 444 Ohm None of these 100 Ohm Less than 1 Ohm 628 Ohm 444 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? None of these Free electrons Valence electrons Thermal energy Doping None of these Free electrons Valence electrons Thermal energy Doping ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: thrice the amount of total current None of these doubles the amount of total current has no effect on the total circuit current cuts the total current by one-half thrice the amount of total current None of these doubles the amount of total current has no effect on the total circuit current cuts the total current by one-half ANSWER DOWNLOAD EXAMIANS APP
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