Electronic Principles The period of a waveform is: the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle the time required for the voltage to rise from 10% to 90% of the peak amplitude None of these the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle the time required for the voltage to rise from 10% to 90% of the peak amplitude None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.3 A 0.4 A None of these 0.2 A 0.6 A 0.3 A 0.4 A None of these 0.2 A 0.6 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms are both ac or both dc None of these they have the same amplitude and frequency All of these their waveforms cross through zero and reach positive and negative peaks at the same time their waveforms are both ac or both dc None of these they have the same amplitude and frequency All of these their waveforms cross through zero and reach positive and negative peaks at the same time ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? None of these P = IE I = P/E P = E2/R P = I2R None of these P = IE I = P/E P = E2/R P = I2R ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The graph of current gain versus collector current indicates that the current gain varies slightly varies enormously is contant equals the collector current divided by the base current None of these varies slightly varies enormously is contant equals the collector current divided by the base current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage? 16 V 7.5 V 8 V 3 V None of these 16 V 7.5 V 8 V 3 V None of these ANSWER DOWNLOAD EXAMIANS APP
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