Electronic Principles The peak value of a sine waveform is: the maximum positive or negative value None of these the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the maximum positive or negative value None of these the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: All of these None 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 they have the same amplitude and frequency All of these None 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 they have the same amplitude and frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? less than the free electrons many None of these Only those produced by thermal energy Same number as free electrons less than the free electrons many None of these Only those produced by thermal energy Same number as free electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Mechanical energy Chemical energy Electronical energy None of these Solar energy Mechanical energy Chemical energy Electronical energy None of these Solar energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? 628 Ohm Less than 1 Ohm None of these 444 Ohm 100 Ohm 628 Ohm Less than 1 Ohm None of these 444 Ohm 100 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 28.4 mA 68.4 mA 24.2 mA 34.4 mA None of these 28.4 mA 68.4 mA 24.2 mA 34.4 mA None of these ANSWER DOWNLOAD EXAMIANS APP
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