Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 200 mA None of these 7.8 mA 300 mA 208 mA 200 mA None of these 7.8 mA 300 mA 208 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA? 20 V 0.17 V 18.8 V 10.17 V None of these 20 V 0.17 V 18.8 V 10.17 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has Infinite internal resistance None of these A large internal resistance A small internal resistance Zero internal resistance Infinite internal resistance None of these A large internal resistance A small internal resistance Zero internal resistance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used for creating static electricity? Mechanical energy Light energy Solar energy Chemical energy None of these Mechanical energy Light energy Solar energy Chemical energy None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? None of these 10.3 µA 14.8 µA 7.8 µA 7.75 µA None of these 10.3 µA 14.8 µA 7.8 µA 7.75 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage? 7.5 V 16 V 3 V None of these 8 V 7.5 V 16 V 3 V None of these 8 V ANSWER DOWNLOAD EXAMIANS APP
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