Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Solar energy Electronical energy Mechanical energy None of these Chemical energy Solar energy Electronical energy Mechanical energy None of these Chemical energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.6 A None of these 0.4 A 0.3 A 0.2 A 0.6 A None of these 0.4 A 0.3 A 0.2 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff? 2 k Ohm 20 k Ohm None of these 10 k Ohm 1 k Ohm 2 k Ohm 20 k Ohm None of these 10 k Ohm 1 k Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? None of these The concentration of lines of magnetic force The force that maintains lines of force The rate of change of the number of lines of magnetic force The opposition to a build-up of magnetic fields None of these The concentration of lines of magnetic force The force that maintains lines of force The rate of change of the number of lines of magnetic force The opposition to a build-up of magnetic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? None of these 24.2 mA 28.4 mA 34.4 mA 68.4 mA None of these 24.2 mA 28.4 mA 34.4 mA 68.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical pressure to electrical energy is called a: photodiode piezoelectric device nicad cell solar cell None of these photodiode piezoelectric device nicad cell solar cell None of these ANSWER DOWNLOAD EXAMIANS APP
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