Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Voltmeter None of these Ohmmeter Ammeter Wattmeter Voltmeter None of these Ohmmeter Ammeter Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff? 20 km or less None of these 20 k Ohm or more 200 k Ohm or less 200 k Ohm or more 20 km or less None of these 20 k Ohm or more 200 k Ohm or less 200 k Ohm or more ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A battery is a device composed of one or more: None of these voltage generators piezoeletric cells solar cells chemical cells None of these voltage generators piezoeletric cells solar cells chemical cells ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm 30 degree 45 degree 75 degree None of these 180 degree 30 degree 45 degree 75 degree None of these 180 degree 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 an increase in current through the coil causes no further increase in the mmf 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 None of these 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 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 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? 120 Ohm None of these 30 Ohm 754 Ohm 60 Ohm 120 Ohm None of these 30 Ohm 754 Ohm 60 Ohm ANSWER DOWNLOAD EXAMIANS APP
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