Electronic Principles Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff? 20 Ohm 30 Ohm None of these 10 Ohm 100 Ohm 20 Ohm 30 Ohm None of these 10 Ohm 100 Ohm 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? 24.2 mA 28.4 mA None of these 68.4 mA 34.4 mA 24.2 mA 28.4 mA None of these 68.4 mA 34.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit flows in two directions at the same time The current in an ac circuit changes direction periodically None of these The current in an ac circuit flows in one direction at a steady level 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 changes direction periodically None of these The current in an ac circuit flows in one direction at a steady level The current in an ac circuit flows in one direction, but changes value periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much power is being dissipated by a 1000 W resistance that has 25 V applied to it? 325 kW 0.24 W None of these 0.625 W 80 W 325 kW 0.24 W None of these 0.625 W 80 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? None of these 2 43891 3 43922 None of these 2 43891 3 43922 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of electron current flow is: from neutral to positive from positive to negative from negative to positive None of these from right to left from neutral to positive from positive to negative from negative to positive None of these from right to left ANSWER DOWNLOAD EXAMIANS APP
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