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 300 mA 208 mA None of these 7.8 mA 200 mA 300 mA 208 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What causes the depletion layer? Doping Ions None of these Barrier potential Recombination Doping Ions None of these Barrier potential Recombination ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.75 mA 3.2 mA 13 mA 0.05 mA None of these 3.75 mA 3.2 mA 13 mA 0.05 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode? 16.3 mA 55 A None of these 55.86 A 18.2 mA 16.3 mA 55 A None of these 55.86 A 18.2 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Wattmeter None of these Voltmeter Ammeter Ohmmeter Wattmeter None of these Voltmeter Ammeter Ohmmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the Q point moves along the load line, the voltage increases when the current Can be any of above Decreases Stays the same Increases None of these Can be any of above Decreases Stays the same Increases None of these ANSWER DOWNLOAD EXAMIANS APP
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