Electronic Principles Which one of the following phrasers best describes flux density? The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The opposition to a build-up of magnetic fields The concentration of lines of magnetic force The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The opposition to a build-up of magnetic fields The concentration of lines of magnetic force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When operating below its resonant frequency, a series RLC circuit has the characteristics of a: None of these series RL circuit purely resistive circuit series RC circuit series RLC circuit operated above its resonant frequency None of these series RL circuit purely resistive circuit series RC circuit series RLC circuit operated above its resonant frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation? 300 mW 20 mW 10 mW None of these 200 mW 300 mW 20 mW 10 mW None of these 200 mW ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm? 250 Ohm 70.7Ohm 60 Ohm 99.3 Ohm None of these 250 Ohm 70.7Ohm 60 Ohm 99.3 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a parallel circuit? The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit The total voltage in a parallel circuit is equal to the average value of the individual voltages None of these The total voltage in a parallel circuit is always less than the value of the smallest voltage The total voltage of a parallel circuit is the same as the voltages across each branch The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit The total voltage in a parallel circuit is equal to the average value of the individual voltages None of these The total voltage in a parallel circuit is always less than the value of the smallest voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Four - two negative and two positive One - a negative terminal Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal None of these Four - two negative and two positive One - a negative terminal Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal None of these ANSWER DOWNLOAD EXAMIANS APP
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