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 None of these 10.3 µA 14.8 µA 7.8 µA 7.75 µA None of these 10.3 µA 14.8 µA 7.8 µA 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? There is no valid comparison Permeability Permeance Reluctance Retentivity There is no valid comparison Permeability Permeance Reluctance Retentivity ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? None of these 0.25 µA 250 µA 300 µA 350 µA None of these 0.25 µA 250 µA 300 µA 350 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? P = I2R P = IE P = E2/R I = P/E None of these P = I2R P = IE P = E2/R I = P/E None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? None of these 30 V 24 V 18 V 12 V None of these 30 V 24 V 18 V 12 V 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 and at a steady level The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically None of these The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically None of these ANSWER DOWNLOAD EXAMIANS APP
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