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 30 V 24 V None of these 18 V 12 V 30 V 24 V None of these 18 V ANSWER DOWNLOAD EXAMIANS APP
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 14.8 µA 7.8 µA 10.3 µA 7.75 µA None of these 14.8 µA 7.8 µA 10.3 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? 6 W 122 W 3 W 64 W None of these 6 W 122 W 3 W 64 W None of these 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? I = P/E P = IE P = I2R None of these P = E2/R I = P/E P = IE P = I2R None of these P = E2/R ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Wattmeter Ammeter None of these Ohmmeter Voltmeter Wattmeter Ammeter None of these Ohmmeter Voltmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles 1 Microfarad is the same as: 1 million picofarads None of these 1 millionth of a picofarad 1000 millifarads 1 million farads 1 million picofarads None of these 1 millionth of a picofarad 1000 millifarads 1 million farads ANSWER DOWNLOAD EXAMIANS APP
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