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 the core is permitted to move freely within the coil None of these frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil None of these frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the number of cycles completed in one second None of these equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude the time required to complete one full cycle the number of cycles completed in one second None of these equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude the time required to complete one full cycle ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the graph of current versus voltage is a straight line, the device is referred to as Nonlinear None of these Linear Active Bipolar Nonlinear None of these Linear Active Bipolar ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Who invented the first junction transistor? Smith Fisher Gomes None of these Shockley Smith Fisher Gomes None of these Shockley ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? None of these 6 85 81 9 None of these 6 85 81 9 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which is the most widely used semiconductor? All of these Silicon Copper None of these Germanium All of these Silicon Copper None of these Germanium ANSWER DOWNLOAD EXAMIANS APP
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