Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? None of these The voltage remains at one polarity and at a steady level The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically The voltage reverses polarity periodically None of these The voltage remains at one polarity and at a steady level The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically The voltage reverses polarity periodically 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 P = E2/R None of these P = I2R I = P/E P = IE P = E2/R None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a parallel circuit? None of these The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit The total voltage in a parallel circuit is equal to the average value of the individual voltages The total voltage in a parallel circuit is always less than the value of the smallest voltage None of these The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit The total voltage in a parallel circuit is equal to the average value of the individual voltages The total voltage in a parallel circuit is always less than the value of the smallest voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 180 0.5 4 None of these 0.25 180 0.5 4 None of these 0.25 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true? There is no meaningful relationship between the power dissipation of a pure capacitor and its operating frequency Power dissipation of a pure capacitor increases with operating frequency None of these Power dissipation of a pure capacitor decreases with operating frequency All of these There is no meaningful relationship between the power dissipation of a pure capacitor and its operating frequency Power dissipation of a pure capacitor increases with operating frequency None of these Power dissipation of a pure capacitor decreases with operating frequency All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? Amplify weak signals Rectify line voltage Regulate voltage Emit light None of these Amplify weak signals Rectify line voltage Regulate voltage Emit light None of these ANSWER DOWNLOAD EXAMIANS APP
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