Electronic Principles Which one of the following principles best describes the basic operation of a generator? Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract Current flowing through a conductor generates a magnetic field None of these Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract Current flowing through a conductor generates a magnetic field None of these Current is induced in a conductor that is moving through a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? Flux density None of these Magnetomotive force Number of lines of force Reluctance Flux density None of these Magnetomotive force Number of lines of force Reluctance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 13 mA 3.2 mA 3.75 mA 0.05 mA None of these 13 mA 3.2 mA 3.75 mA 0.05 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? None of these Doping Valence electrons Thermal energy Free electrons None of these Doping Valence electrons Thermal energy Free electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following kinds of materials has the lowest permeability? A diamagnetic material A paramagnetic material All of these None of these A feiTomagnetic material A diamagnetic material A paramagnetic material All of these None of these A feiTomagnetic material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The valence electron of a copper atom experiences what kind of attraction toward the nucleus? Strong Weak None of these Impossible to say Neutral Strong Weak None of these Impossible to say Neutral ANSWER DOWNLOAD EXAMIANS APP
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