Electronic Principles Holes act like: Negative charges Atoms None of these Positive charges Crystals Negative charges Atoms None of these Positive charges Crystals 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 None of these an increase in current through the coil causes no further increase in the mmf 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 None of these an increase in current through the coil causes no further increase in the mmf ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm? None of these 60 Ohm 70.7Ohm 99.3 Ohm 250 Ohm None of these 60 Ohm 70.7Ohm 99.3 Ohm 250 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has Zero internal resistance A large internal resistance Infinite internal resistance A small internal resistance None of these Zero internal resistance A large internal resistance Infinite internal resistance A small internal resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Voltmeter Ohmmeter Ammeter None of these Wattmeter Voltmeter Ohmmeter Ammeter None of these Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values? 0.93 W 9.3 W 0.041666666666667 0.93 V None of these 0.93 W 9.3 W 0.041666666666667 0.93 V None of these ANSWER DOWNLOAD EXAMIANS APP
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