Electronic Principles What is one important thing transistors do? Amplify weak signals Emit light Regulate voltage Rectify line voltage None of these Amplify weak signals Emit light Regulate voltage Rectify line voltage None of these ANSWER DOWNLOAD EXAMIANS APP
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 208 V None of these 700 V 651 V 707 V 208 V None of these 700 V 651 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a direct statement of Ohm's law? The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it None of these The total resistance of a parallel circuit is less than the value of the smallest resistance The algebraic sum of voltages in a loop is equal to zero The algebraic sum of currents entering and leaving a point is equal to zero The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it None of these The total resistance of a parallel circuit is less than the value of the smallest resistance The algebraic sum of voltages in a loop is equal to zero The algebraic sum of currents entering and leaving a point is equal to zero ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Thevenin theorem replaces a complicated circuit facing a load by an Ideal voltage source and series resistor Ideal voltage source and parallel resistor Ideal current source and series resistor None of these Ideal current source and parallel resistor Ideal voltage source and series resistor Ideal voltage source and parallel resistor Ideal current source and series resistor None of these Ideal current source and parallel resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage? 16 V None of these 8 V 3 V 7.5 V 16 V None of these 8 V 3 V 7.5 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltages in a series RL circuit? The total voltage is less than the sum of the voltages across the resistance and inductance The total voltages is equal to the sum of the voltages across the resistance and inductance The voltage always has the same amplitude and phase for every part of the circuit The total voltage lags the total current by less than 90 None of these The total voltage is less than the sum of the voltages across the resistance and inductance The total voltages is equal to the sum of the voltages across the resistance and inductance The voltage always has the same amplitude and phase for every part of the circuit The total voltage lags the total current by less than 90 None of these ANSWER DOWNLOAD EXAMIANS APP
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