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? 28.4 mA 34.4 mA 68.4 mA 24.2 mA None of these 28.4 mA 34.4 mA 68.4 mA 24.2 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff? 200 k Ohm or less 200 k Ohm or more None of these 20 k Ohm or more 20 km or less 200 k Ohm or less 200 k Ohm or more None of these 20 k Ohm or more 20 km or less ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? P = E2/R I = P/E R = E2/P None of these P = PR P = E2/R I = P/E R = E2/P None of these P = PR ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values? None of these 9.3 W 0.93 W 0.041666666666667 0.93 V None of these 9.3 W 0.93 W 0.041666666666667 0.93 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: None of these multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance cuts the capacitive reactance in half doubles the amount of a capacitive reactance None of these multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance cuts the capacitive reactance in half doubles the amount of a capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best describes magnetic hysteresis? Hysteresis is most apparent when the core material is saturated Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet None of these Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is most apparent when the core material is saturated Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet None of these Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet ANSWER DOWNLOAD EXAMIANS APP
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