Electronic Principles Which one of the following kinds of materials has the highest permeability? A diamagnetic material A paramagnetic material None of these A ferromagnetic material All of these A diamagnetic material A paramagnetic material None of these A ferromagnetic material All of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic semiconductor has None of these many holes No holes many free electrons a few free electrons and holes None of these many holes No holes many free electrons a few free electrons and holes 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? 20 k Ohm or more 200 k Ohm or more None of these 20 km or less 200 k Ohm or less 20 k Ohm or more 200 k Ohm or more None of these 20 km or less 200 k Ohm or less ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit changes direction periodically None of these The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in one direction at a steady level The current in an ac circuit changes direction periodically None of these The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit flows in one direction at a steady level 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? 24 V 30 V None of these 18 V 12 V 24 V 30 V None of these 18 V 12 V 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
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