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? 208 mA 300 mA 200 mA None of these 7.8 mA 208 mA 300 mA 200 mA None of these 7.8 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles For normal operation of the transistor, the collector diode has to be None of these Nonconducting Reverse-biased Operating in the breakdown region Forward-biased None of these Nonconducting Reverse-biased Operating in the breakdown region Forward-biased ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What are the main parts of an atom? Electrons, ions, and neutrons None of these Electrons, protons, and ions Protons only Electrons, protons, and neutrons Electrons, ions, and neutrons None of these Electrons, protons, and ions Protons only Electrons, protons, and neutrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in two directions at the same time None of these The current in an ac circuit flows in one direction at a steady level The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in two directions at the same time None of these The current in an ac circuit flows in one direction at a steady level The current in an ac circuit changes direction periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The basic unit of measurement for resistance is the: ohm volt ampere watt None of these ohm volt ampere watt None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? R = E2/P P = PR P = E2/R None of these I = P/E R = E2/P P = PR P = E2/R None of these I = P/E ANSWER DOWNLOAD EXAMIANS APP
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