Electronic Principles The period of a waveform is: 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 the number of cycles completed in one second None of these 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 the number of cycles completed in one second None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately applies to the frequency of a waveform? Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The higher the amplitude of a waveform, the higher its frequency The actual frequency of a sine waveform is 1.41 times the working frequency None of these The longer the period of a waveform, the lower its frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz The higher the amplitude of a waveform, the higher its frequency The actual frequency of a sine waveform is 1.41 times the working frequency None of these The longer the period of a waveform, the lower its frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Electronical energy Chemical energy Solar energy Mechanical energy None of these Electronical energy Chemical energy Solar energy Mechanical energy None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? Flux density None of these Reluctance Magnetomotive force Number of lines of force Flux density None of these Reluctance Magnetomotive force Number of lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 2 3 None of these 43922 43891 2 3 None of these 43922 43891 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 13 mA 0.05 mA 3.75 mA 3.2 mA None of these 13 mA 0.05 mA 3.75 mA 3.2 mA None of these ANSWER DOWNLOAD EXAMIANS APP
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