Electronic Principles Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage? 120 V 180 V None of these 100 V 170 V 120 V 180 V None of these 100 V 170 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms are both ac or both dc All of these 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 their waveforms are both ac or both dc All of these 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 10.3 µA 7.75 µA None of these 14.8 µA 7.8 µA 10.3 µA 7.75 µA None of these 14.8 µA 7.8 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 300 mA 7.8 mA None of these 208 mA 200 mA 300 mA 7.8 mA None of these 208 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The knee voltage of a diode is approximately equal to the Barrier potential Forward voltage None of these Breakdown voltage Applied voltage Barrier potential Forward voltage None of these Breakdown voltage Applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? 4.73 None of these 24 V 600 V 0.4 V 4.73 None of these 24 V 600 V 0.4 V ANSWER DOWNLOAD EXAMIANS APP
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