Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W? 224 ohm 77.7 ohm 89.3 ohm None of these 88.8 ohm 224 ohm 77.7 ohm 89.3 ohm None of these 88.8 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a series RLC circuit: always increases as the applied frequency increases always decreases as the applied frequency increases is minimum at the resonant frequency None of these is maximum at the resonant frequency always increases as the applied frequency increases always decreases as the applied frequency increases is minimum at the resonant frequency None of these is maximum at the resonant frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? 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 None of these Like magnetic poles repel, while unlike poles attract 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 None of these Like magnetic poles repel, while unlike poles attract ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.4 A 0.2 A 0.6 A 0.3 A None of these 0.4 A 0.2 A 0.6 A 0.3 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point off the load line down nowhere up None of these off the load line down nowhere up None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that would be attracted to the earth's south magnetic pole that would be attracted to the earth's north magnetic pole None of these that would be repelled by the south pole of another magnet that has its molecules arranged in a random pattern that would be attracted to the earth's south magnetic pole that would be attracted to the earth's north magnetic pole None of these that would be repelled by the south pole of another magnet that has its molecules arranged in a random pattern ANSWER DOWNLOAD EXAMIANS APP
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