Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 12 V 18 V 30 V 24 V None of these 12 V 18 V 30 V 24 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Decreases Increases None of these 0oC Stays the same Decreases Increases None of these 0oC Stays the same 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 13 mA 3.2 mA None of these 0.05 mA 3.75 mA 13 mA 3.2 mA None of these 0.05 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit? Number of lines of force Flux density Magnetomotive force Reluctance None of these Number of lines of force Flux density Magnetomotive force Reluctance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Norton's theorem replaces a complicated circuit facing a load by an Ideal current source and series resistor Ideal voltage source and series resistor Ideal current source and parallel resistor None of these Ideal voltage source and parallel resistor Ideal current source and series resistor Ideal voltage source and series resistor Ideal current source and parallel resistor None of these Ideal voltage source and parallel resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? Amplify weak signals Rectify line voltage Regulate voltage None of these Emit light Amplify weak signals Rectify line voltage Regulate voltage None of these Emit light ANSWER DOWNLOAD EXAMIANS APP
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