Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like an insulator a piece of copper wire a conductor None of these a battery an insulator a piece of copper wire a conductor None of these a battery ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The valence electron of a copper atom experiences what kind of attraction toward the nucleus? Impossible to say None of these Strong Weak Neutral Impossible to say None of these Strong Weak Neutral ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 0.25 4 None of these 0.5 180 0.25 4 None of these 0.5 180 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: ac current is converted to dc voltage ac current and voltage are exactly in phase None of these ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree ac current is converted to dc voltage ac current and voltage are exactly in phase None of these ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A battery is a device composed of one or more: voltage generators solar cells piezoeletric cells chemical cells None of these voltage generators solar cells piezoeletric cells chemical cells None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 208 V 651 V None of these 700 V 707 V 208 V 651 V None of these 700 V 707 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS