Electronic Principles The peak value of a sine waveform is: the amplitude at 1.41 times the maximum value the maximum positive or negative value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value None of these the amplitude at 1.41 times the maximum value the maximum positive or negative value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What kind of device is a diode? Nonlinear Unipolar Bilateral None of these Linear Nonlinear Unipolar Bilateral None of these Linear ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: None of these the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core None of these the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 0.25 µA None of these 250 µA 350 µA 300 µA 0.25 µA None of these 250 µA 350 µA 300 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between a conductor and an insulator? An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all None of these The difference between conductors and insulators depends on how they are used A conductor allows current to flow much easier than an insulator does An insulator allows current to flow much easier than a conductor does An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all None of these The difference between conductors and insulators depends on how they are used A conductor allows current to flow much easier than an insulator does An insulator allows current to flow much easier than a conductor does ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 30 V 24 V 18 V 12 V None of these 30 V 24 V 18 V 12 V None of these ANSWER DOWNLOAD EXAMIANS APP
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