Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Wattmeter Voltmeter Ohmmeter None of these Ammeter Wattmeter Voltmeter Ohmmeter None of these Ammeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Norton's theorem replaces a complicated circuit facing a load by an Ideal voltage source and series resistor None of these Ideal voltage source and parallel resistor Ideal current source and parallel resistor Ideal current source and series resistor Ideal voltage source and series resistor None of these Ideal voltage source and parallel resistor Ideal current source and parallel resistor Ideal current source and series resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The valence electron of a copper atom experiences what kind of attraction toward the nucleus? Weak None of these Neutral Impossible to say Strong Weak None of these Neutral Impossible to say Strong ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold 22,000 Ohm, 5% 220 Ohm, 5% 220 Ohm, 10% 22, 000 Ohm, 10% None of these 22,000 Ohm, 5% 220 Ohm, 5% 220 Ohm, 10% 22, 000 Ohm, 10% None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A low-pass filter: reduces the level of all frequencies by a significant amount passes higher-frequency signals and reduces lower-frequency signals passes lower-frequency signals and reduces higher-frequency signals None of these has no effect on ac signals reduces the level of all frequencies by a significant amount passes higher-frequency signals and reduces lower-frequency signals passes lower-frequency signals and reduces higher-frequency signals None of these has no effect on ac signals ANSWER DOWNLOAD EXAMIANS APP
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