Electronic Principles Suppose the voltage from a power outlet is 120 Vrms. What is the peak voltage? 120 V 180 V 170 V None of these 100 V 120 V 180 V 170 V None of these 100 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from zero to its peak value from 10% of the peak value to 90% of the peak value from zero to its rms value from 10% of the peak value to 70.7% of the peak value None of these from zero to its peak value from 10% of the peak value to 90% of the peak value from zero to its rms value from 10% of the peak value to 70.7% of the peak value None of these 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? 20 mW None of these 200 mW 10 mW 300 mW 20 mW None of these 200 mW 10 mW 300 mW ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Silicon atoms combine into an orderly pattern called a None of these Covalent bond Semiconductor Valence orbit Crystal None of these Covalent bond Semiconductor Valence orbit Crystal ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 10.3 µA 7.8 µA None of these 7.75 µA 14.8 µA 10.3 µA 7.8 µA None of these 7.75 µA 14.8 µA ANSWER DOWNLOAD EXAMIANS APP
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