Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction at a steady level None of these The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction at a steady level None of these The current in an ac circuit changes direction periodically 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? 3 W 64 W 6 W 122 W None of these 3 W 64 W 6 W 122 W None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 6 9 85 81 None of these 6 9 85 81 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of Kirchhoffs current law? The algebraic sum of currents in a loop is equal to zero The algebraic sum of currents entering and leaving a point is equal to zero The current through a resistance is proportional to the value of resistance and the IR drop across it None of these The total current in a parallel circuit is less than the value of the smallest current The algebraic sum of currents in a loop is equal to zero The algebraic sum of currents entering and leaving a point is equal to zero The current through a resistance is proportional to the value of resistance and the IR drop across it None of these The total current in a parallel circuit is less than the value of the smallest current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Thevenin theorem replaces a complicated circuit facing a load by an Ideal current source and series resistor Ideal voltage source and series resistor Ideal current source and parallel resistor None of these Ideal voltage source and parallel resistor Ideal current source and series resistor Ideal voltage source and series resistor Ideal current source and parallel resistor None of these Ideal voltage source and parallel resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the collector current increases, what does the current gain do? any of the above increases None of these stays the same decreases any of the above increases None of these stays the same decreases ANSWER DOWNLOAD EXAMIANS APP
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