Electronic Principles The dielectric constant of a material is a measure of: how well the material concentrates electrostatic lines of force the amount of opposition to the current flow the amount of voltage it can withstand before breaking down how well the material concentrates magnetic lines of force None of these how well the material concentrates electrostatic lines of force the amount of opposition to the current flow the amount of voltage it can withstand before breaking down how well the material concentrates magnetic lines of force None of these 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? None of these 99.3 Ohm 250 Ohm 60 Ohm 70.7Ohm None of these 99.3 Ohm 250 Ohm 60 Ohm 70.7Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: None of these ac current and voltage are exactly in phase ac current is converted to dc voltage ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree None of these ac current and voltage are exactly in phase ac current is converted to dc voltage ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 12 V 30 V 24 V 18 V None of these 12 V 30 V 24 V 18 V None of these 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 None of these P = PR R = E2/P P = E2/R I = P/E None of these P = PR R = E2/P ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has No holes many holes None of these a few free electrons and holes many free electrons No holes many holes None of these a few free electrons and holes many free electrons ANSWER DOWNLOAD EXAMIANS APP
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