Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 68.4 mA None of these 24.2 mA 34.4 mA 28.4 mA 68.4 mA None of these 24.2 mA 34.4 mA 28.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? 1000 A 100 A 0.41666666666667 0.1 A None of these 1000 A 100 A 0.41666666666667 0.1 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit? Retentivity Reluctance Permeability Permeance There is no valid comparison Retentivity Reluctance Permeability Permeance There is no valid comparison ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: doubles the amount of inductive reactance cuts the inductive reactance in half multiplies the inductive reactance by 6.28 None of these has no effect on the inductive reactance doubles the amount of inductive reactance cuts the inductive reactance in half multiplies the inductive reactance by 6.28 None of these has no effect on the inductive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately applies to the frequency of a waveform? The longer the period of a waveform, the lower its frequency The actual frequency of a sine waveform is 1.41 times the working frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz None of these The higher the amplitude of a waveform, the higher its frequency The longer the period of a waveform, the lower its frequency The actual frequency of a sine waveform is 1.41 times the working frequency Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz None of these The higher the amplitude of a waveform, the higher its frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between the kinds of charges for an electron and a proton? An electron has a negative charge and a proton has a positive charge None of these An electron has a positive charge and a proton has no charge An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has no charge An electron has a negative charge and a proton has a positive charge None of these An electron has a positive charge and a proton has no charge An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has no charge ANSWER DOWNLOAD EXAMIANS APP
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