Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 9 6 81 None of these 85 9 6 81 None of these 85 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 I = P/E P = IE None of these P = E2/R P = I2R I = P/E P = IE None of these P = E2/R ANSWER DOWNLOAD EXAMIANS APP
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? None of these 24.2 mA 28.4 mA 68.4 mA 34.4 mA None of these 24.2 mA 28.4 mA 68.4 mA 34.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? many Same number as free electrons None of these Only those produced by thermal energy less than the free electrons many Same number as free electrons None of these Only those produced by thermal energy less than the free electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question? 100 W None of these 200 W 20 W 1000 W 100 W None of these 200 W 20 W 1000 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: the number of cycles completed in one second equal to 1.41 times the peak amplitude equal to 0.707 times the peak amplitude None of these the time required to complete one full cycle the number of cycles completed in one second equal to 1.41 times the peak amplitude equal to 0.707 times the peak amplitude None of these the time required to complete one full cycle ANSWER DOWNLOAD EXAMIANS APP
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