Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 0.41666666666667 2.02 A None of these 0.02 A 0.955 A 0.41666666666667 2.02 A None of these 0.02 A 0.955 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the maximum positive or negative value the amplitude at 1.41 times the maximum value None of these the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the maximum positive or negative value the amplitude at 1.41 times the maximum value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these frequent changes in the direction of current through the coil causes heating effects in the core material the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these frequent changes in the direction of current through the coil causes heating effects in the core material the core is permitted to move freely within the coil ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio for the transformer specified in the above question? None of these 1.5 0.707 0.575 10.738 None of these 1.5 0.707 0.575 10.738 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? 600 V 0.4 V 4.73 24 V None of these 600 V 0.4 V 4.73 24 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductive reactance of a parallel inductor circuit is: equal to the sum of the individual inductance values equal to the source voltage divided by total current None of these less than the inductance value of the smallest inductor equal to the sum of the individual inductive-reactance values equal to the sum of the individual inductance values equal to the source voltage divided by total current None of these less than the inductance value of the smallest inductor equal to the sum of the individual inductive-reactance values ANSWER DOWNLOAD EXAMIANS APP
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