Electronic Principles Which one of the following is most likely used for measuring the rate of electron flow? None of these Wattmeter Ohmmeter Ammeter Voltmeter None of these Wattmeter Ohmmeter Ammeter Voltmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question? 1000 W 100 W 20 W 200 W None of these 1000 W 100 W 20 W 200 W None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: thermocouple chemical cell solar cell piezoelectric devices None of these thermocouple chemical cell solar cell piezoelectric devices None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Stays the same None of these 0oC Increases Decreases Stays the same None of these 0oC Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Doping Valence electrons None of these Free electrons Thermal energy Doping Valence electrons None of these Free electrons Thermal energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material None of these an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material None of these ANSWER DOWNLOAD EXAMIANS APP
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