Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 7.75 µA 14.8 µA 10.3 µA 7.8 µA None of these 7.75 µA 14.8 µA 10.3 µA 7.8 µA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? None of these 4 0.5 180 0.25 None of these 4 0.5 180 0.25 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Norton's theorem replaces a complicated circuit facing a load by an None of these Ideal voltage source and series resistor Ideal current source and parallel resistor Ideal voltage source and parallel resistor Ideal current source and series resistor None of these Ideal voltage source and series resistor Ideal current source and parallel resistor Ideal voltage source and parallel resistor Ideal current source and series resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time The voltage reverses polarity periodically None of these The voltage remains at one polarity and at a steady level The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time The voltage reverses polarity periodically None of these The voltage remains at one polarity and at a steady level ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: the time required for the voltage to rise from 10% to 90% of the peak amplitude equal to 0.707 times the peak amplitude the number of cycles completed in one second the time required to complete one full cycle None of these the time required for the voltage to rise from 10% to 90% of the peak amplitude equal to 0.707 times the peak amplitude the number of cycles completed in one second the time required to complete one full cycle None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? None of these Electronical energy Mechanical energy Solar energy Chemical energy None of these Electronical energy Mechanical energy Solar energy Chemical energy ANSWER DOWNLOAD EXAMIANS APP
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