Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 707 V None of these 651 V 700 V 208 V 707 V None of these 651 V 700 V 208 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it? E = PR I = E/R I = ER None of these E = I2R E = PR I = E/R I = ER None of these E = I2R 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 = E2/R None of these P = IE P = I2R I = P/E P = E2/R None of these P = IE P = I2R I = P/E ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the impedance of a series RC circuit? None of these The impedance is less than the sum of the resistance and capacitive reactance The impedance is equal to the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is greater than the sum of the resistance and capacitive reactance None of these The impedance is less than the sum of the resistance and capacitive reactance The impedance is equal to the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is greater than the sum of the resistance and capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Thevenin theorem replaces a complicated circuit facing a load by an Ideal current source and parallel resistor Ideal current source and series resistor None of these Ideal voltage source and series resistor Ideal voltage source and parallel resistor Ideal current source and parallel resistor Ideal current source and series resistor None of these Ideal voltage source and series resistor Ideal voltage source and parallel resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: cuts the total current by one-half thrice the amount of total current has no effect on the total circuit current None of these doubles the amount of total current cuts the total current by one-half thrice the amount of total current has no effect on the total circuit current None of these doubles the amount of total current ANSWER DOWNLOAD EXAMIANS APP
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