Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 0.25 None of these 180 0.5 4 0.25 None of these 180 0.5 4 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff? 1 k Ohm 20 k Ohm 2 k Ohm None of these 10 k Ohm 1 k Ohm 20 k Ohm 2 k Ohm None of these 10 k Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The merging of a free electron and a hole is called Covalent bonding None of these Lifetime Thermal energy Recombination Covalent bonding None of these Lifetime Thermal energy Recombination ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The south pole of a magnet is the one: that would be repelled by the north pole of another magnet that has its molecules arranged in a random pattern None of these that would be attracted to the earth's south magnetic pole that would be attracted to the earths north magnetic pole that would be repelled by the north pole of another magnet that has its molecules arranged in a random pattern None of these that would be attracted to the earth's south magnetic pole that would be attracted to the earths north magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The dielectric constant of a material is a measure of: the amount of voltage it can withstand before breaking down the amount of opposition to the current flow None of these how well the material concentrates magnetic lines of force how well the material concentrates electrostatic lines of force the amount of voltage it can withstand before breaking down the amount of opposition to the current flow None of these how well the material concentrates magnetic lines of force how well the material concentrates electrostatic lines of force 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 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 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 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 None of these An insulator allows current to flow much easier than a conductor does ANSWER DOWNLOAD EXAMIANS APP
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