Electronic Principles Which one of the following phrasers best describes flux density? None of these The rate of change of the number of lines of magnetic force The force that maintains lines of force The concentration of lines of magnetic force The opposition to a build-up of magnetic fields None of these The rate of change of the number of lines of magnetic force The force that maintains lines of force The concentration of lines of magnetic force The opposition to a build-up of magnetic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the barrier potential of a silicon diode at room temperature? 2 m V per degree Celsius 1 V 0.7V None of these 0.3V 2 m V per degree Celsius 1 V 0.7V None of these 0.3V 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? 400 Ohm 310 Ohm 410 Ohm None of these 550 Ohm 400 Ohm 310 Ohm 410 Ohm None of these 550 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating above its resonant frequency, a parallel RLC circuit has the characteristics of a: parallel RL circuit parallel RC circuit parallel RLC circuit operated above its resonant frequency None of these purely resistive circuit parallel RL circuit parallel RC circuit parallel RLC circuit operated above its resonant frequency None of these purely resistive circuit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to resistance in an electrical circuit? Permeability Retentivity There is no valid comparison Reluctance Permeance Permeability Retentivity There is no valid comparison Reluctance Permeance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of an inductive circuit: cuts the inductive reactance in half has no effect on the inductive reactance multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance None of these cuts the inductive reactance in half has no effect on the inductive reactance multiplies the inductive reactance by 6.28 doubles the amount of inductive reactance None of these ANSWER DOWNLOAD EXAMIANS APP
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