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 None of these Like magnetic poles repel, while unlike poles attract Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field Like magnetic poles attract, while unlike poles repel None of these Like magnetic poles repel, while unlike poles attract Current flowing through a conductor generates a magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? None of these Flux density Number of lines of force Magnetomotive force Reluctance None of these Flux density Number of lines of force Magnetomotive force Reluctance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What kind of device is a diode? Bilateral Unipolar Nonlinear None of these Linear Bilateral Unipolar Nonlinear None of these Linear ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Two - a negative terminal and a positive terminal None of these Three - negative, positive and neutral terminals Four - two negative and two positive One - a negative terminal Two - a negative terminal and a positive terminal None of these Three - negative, positive and neutral terminals Four - two negative and two positive One - a negative terminal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What kind of battery is most likely included in a cordless electric knife? Nicad battery Mercury-cell battery Zinc-carbon battery None of these Lead-acid battery Nicad battery Mercury-cell battery Zinc-carbon battery None of these Lead-acid battery ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An ideal voltage source has Infinite internal resistance A load dependent voltage A load-dependent current Zero internal resistance None of these Infinite internal resistance A load dependent voltage A load-dependent current Zero internal resistance None of these ANSWER DOWNLOAD EXAMIANS APP
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