Electronic Principles The core of an electromagnet is said to be in saturation when: 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 an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these 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 an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts light energy to electrical energy is called a: photodiode solar cell thermocouple photo transistor None of these photodiode solar cell thermocouple photo transistor None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How many protons does the nucleus of a silicon atom contain? 4 29 14 48 None of these 4 29 14 48 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz? Less than 1 Ohm 628 Ohm 100 Ohm 444 Ohm None of these Less than 1 Ohm 628 Ohm 100 Ohm 444 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? 60 Ohm None of these 30 Ohm 120 Ohm 754 Ohm 60 Ohm None of these 30 Ohm 120 Ohm 754 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Voltmeter Wattmeter Ammeter Ohmmeter None of these Voltmeter Wattmeter Ammeter Ohmmeter None of these ANSWER DOWNLOAD EXAMIANS APP
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