Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract, while unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract, while unlike poles repel ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following kinds of materials has the lowest permeability? A diamagnetic material A paramagnetic material None of these All of these A feiTomagnetic material A diamagnetic material A paramagnetic material None of these All of these A feiTomagnetic material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The knee voltage of a diode is approximately equal to the Applied voltage Barrier potential None of these Forward voltage Breakdown voltage Applied voltage Barrier potential None of these Forward voltage Breakdown voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? None of these 24.2 mA 68.4 mA 34.4 mA 28.4 mA None of these 24.2 mA 68.4 mA 34.4 mA 28.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When a series RLC circuit is operating at its resonant frequency: inductive reactance is equal to the capacitive reactance the difference between inductive and capacitive reactance is equal to the resistance capacitive reactance is greater than the inductive reactance None of these inductive reactance is greater than the capacitive reactance inductive reactance is equal to the capacitive reactance the difference between inductive and capacitive reactance is equal to the resistance capacitive reactance is greater than the inductive reactance None of these inductive reactance is greater than the capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 24 V None of these 12 V 18 V 30 V 24 V None of these 12 V 18 V 30 V ANSWER DOWNLOAD EXAMIANS APP
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