Electronic Principles Which one of the following statements best describes magnetic hysteresis? Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating below its resonant frequency, a parallel RLC circuit has the characteristics of a: None of these parallel RC circuit parallel RLC circuit operated above its resonant frequency purely resistive circuit parallel RL circuit None of these parallel RC circuit parallel RLC circuit operated above its resonant frequency purely resistive circuit parallel RL circuit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? None of these 0.25 4 0.5 180 None of these 0.25 4 0.5 180 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductance of a series inductor circuit is: None of these equal to the sum of the individual inductive-reactance values equal to the source voltage divided by total current equal to the sum of the individual inductance values less than the value of the smallest inductor None of these equal to the sum of the individual inductive-reactance values equal to the source voltage divided by total current equal to the sum of the individual inductance values less than the value of the smallest inductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current? None of these I = P/E P = I2R P = E2/R P = IE None of these I = P/E P = I2R P = E2/R P = IE ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? None of these 550 Ohm 310 Ohm 410 Ohm 400 Ohm None of these 550 Ohm 310 Ohm 410 Ohm 400 Ohm ANSWER DOWNLOAD EXAMIANS APP
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