Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? 24 V 0.4 V None of these 600 V 4.73 24 V 0.4 V None of these 600 V 4.73 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has A large internal resistance A small internal resistance Infinite internal resistance Zero internal resistance None of these A large internal resistance A small internal resistance Infinite internal resistance Zero internal resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W? 77.7 ohm None of these 89.3 ohm 224 ohm 88.8 ohm 77.7 ohm None of these 89.3 ohm 224 ohm 88.8 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Impossible to say Secondary voltage None of these Neither Primary voltage Impossible to say Secondary voltage None of these Neither Primary voltage ANSWER DOWNLOAD EXAMIANS APP
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? 7.8 mA 200 mA None of these 208 mA 300 mA 7.8 mA 200 mA None of these 208 mA 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How may valence electrons does a silicon atom have? 1 None of these 2 4 1 None of these 2 4 ANSWER DOWNLOAD EXAMIANS APP
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