Electronic Principles Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA? 20 V None of these 18.8 V 0.17 V 10.17 V 20 V None of these 18.8 V 0.17 V 10.17 V ANSWER DOWNLOAD EXAMIANS APP
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? 0.4 V 24 V 4.73 600 V None of these 0.4 V 24 V 4.73 600 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? P = PR I = P/E R = E2/P P = E2/R None of these P = PR I = P/E R = E2/P P = E2/R 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? Reluctance Permeability Permeance Retentivity There is no valid comparison Reluctance Permeability Permeance Retentivity There is no valid comparison ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a parallel RLC circuit: always increases as the applied frequency increases is maximum at the resonant frequency None of these always decreases as the applied frequency increases is equal to the sum of the values of resistance, inductive reactance and capacitive reactance always increases as the applied frequency increases is maximum at the resonant frequency None of these always decreases as the applied frequency increases is equal to the sum of the values of resistance, inductive reactance and capacitive reactance 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? 0.05 mA 13 mA None of these 3.75 mA 3.2 mA 0.05 mA 13 mA None of these 3.75 mA 3.2 mA ANSWER DOWNLOAD EXAMIANS APP
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