Electronic Principles Which one of the following phrases best describes residual magnetism? None of these The amount of magnetic flux that is not confined to the core material of an electromagnet Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field None of these The amount of magnetic flux that is not confined to the core material of an electromagnet Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value? 30.4 V 38.74 V 35.4 V None of these 37.4 V 30.4 V 38.74 V 35.4 V None of these 37.4 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Increases None of these Decreases Stays the same 0oC Increases None of these Decreases Stays the same 0oC ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is most likely used for measuring the rate of electron flow? Wattmeter Voltmeter Ohmmeter None of these Ammeter Wattmeter Voltmeter Ohmmeter None of these Ammeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage? None of these 60 V 40 V 0 V 36 V None of these 60 V 40 V 0 V 36 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between a conductor and an insulator? The difference between conductors and insulators depends on how they are used An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all A conductor allows current to flow much easier than an insulator does None of these An insulator allows current to flow much easier than a conductor does The difference between conductors and insulators depends on how they are used An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all A conductor allows current to flow much easier than an insulator does None of these An insulator allows current to flow much easier than a conductor does ANSWER DOWNLOAD EXAMIANS APP
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