Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding? 50 A 0.20833333333333 20 A None of these 50 A 0.20833333333333 20 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the amplitude at 1.41 times the maximum value None of these the maximum positive or negative value the amplitude at 90% of the maximum value the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value None of these the maximum positive or negative value the amplitude at 90% of the maximum value the amplitude at 70.7% of the maximum value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The value of a capacitor can be made larger by: decreasing the area of the plates increasing the voltage applied to the plates None of these increasing the area of the plates increasing the frequency of the applied voltage decreasing the area of the plates increasing the voltage applied to the plates None of these increasing the area of the plates increasing the frequency of the applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core None of these an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total capacitance of a series capacitor circuit is: equal to the sun of the individual capacitive-reactance values None of these less than the value of the smallest capacitor equal to the source voltage divided by total current equal to the sum of the individual capacitance values equal to the sun of the individual capacitive-reactance values None of these less than the value of the smallest capacitor equal to the source voltage divided by total current equal to the sum of the individual capacitance values ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Who invented the first junction transistor? Smith None of these Shockley Gomes Fisher Smith None of these Shockley Gomes Fisher ANSWER DOWNLOAD EXAMIANS APP
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