Electronic Principles Which one of the following statements best describes magnetic hysteresis? Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is most apparent when the core material is saturated ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of a generator? Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel; unlike poles attract Current flowing through a conductor generates a magnetic field None of these Like magnetic poles attract; unlike poles repel Current is induced in a conductor that is moving through a magnetic field Like magnetic poles repel; unlike poles attract Current flowing through a conductor generates a magnetic field None of these Like magnetic poles attract; unlike poles repel ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The north pole of a magnet is the one: that would be repelled by the south pole of another magnet that would be attracted to the earth's south magnetic pole that has its molecules arranged in a random pattern None of these that would be attracted to the earth's north magnetic pole that would be repelled by the south pole of another magnet that would be attracted to the earth's south magnetic pole that has its molecules arranged in a random pattern None of these that would be attracted to the earth's north magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? None of these 6 W 122 W 64 W 3 W None of these 6 W 122 W 64 W 3 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? None of these 180 0.5 0.25 4 None of these 180 0.5 0.25 4 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If the current gain is 200 and the collector current is 100 mA, the base current is 0.083333333333333 2 mA 200 A 0.5 mA None of these 0.083333333333333 2 mA 200 A 0.5 mA None of these ANSWER DOWNLOAD EXAMIANS APP
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