Electronic Principles A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff? None of these 20 k Ohm 2 k Ohm 10 k Ohm 1 k Ohm None of these 20 k Ohm 2 k Ohm 10 k Ohm 1 k Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the difference between the kinds of charges for an electron and a proton? None of these An electron has a positive charge and a proton has no charge An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has no charge None of these An electron has a positive charge and a proton has no charge An electron has a negative charge and a proton has a positive charge An electron has a positive charge and a proton has a negative charge An electron has a negative charge and a proton has no charge 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 18 V 24 V None of these 30 V 12 V 18 V 24 V None of these 30 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value from zero to its peak value None of these from zero to its rms value from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value from zero to its peak value None of these from zero to its rms value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage remains at one polarity and at a steady level The voltage remains at one polarity but changes value periodically None of these The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity and at a steady level The voltage remains at one polarity but changes value periodically None of these The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: thrice the amount of total current cuts the total current by one-half doubles the amount of total current None of these has no effect on the total circuit current thrice the amount of total current cuts the total current by one-half doubles the amount of total current None of these has no effect on the total circuit current ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS