Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Decreases 0oC None of these Stays the same Increases Decreases 0oC None of these Stays the same Increases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that would be attracted to the earth's north magnetic pole that would be repelled by the south pole of another magnet that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole None of these that would be attracted to the earth's north magnetic pole that would be repelled by the south pole of another magnet that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? 1000 A 0.1 A 0.41666666666667 100 A None of these 1000 A 0.1 A 0.41666666666667 100 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? None of these 754 Ohm 60 Ohm 120 Ohm 30 Ohm None of these 754 Ohm 60 Ohm 120 Ohm 30 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? One - a negative terminal Two - a negative terminal and a positive terminal Three - negative, positive and neutral terminals Four - two negative and two positive None of these One - a negative terminal Two - a negative terminal and a positive terminal Three - negative, positive and neutral terminals Four - two negative and two positive None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between a conductor and an insulator? A conductor allows current to flow much easier than an insulator does An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all The difference between conductors and insulators depends on how they are used An insulator allows current to flow much easier than a conductor does None of these A conductor allows current to flow much easier than an insulator does An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all The difference between conductors and insulators depends on how they are used An insulator allows current to flow much easier than a conductor does None of these ANSWER DOWNLOAD EXAMIANS APP
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