Electronic Principles Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode 14 mA 10 mA None of these 11 mA 12 mA 14 mA 10 mA None of these 11 mA 12 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following kinds of materials has the lowest permeability? A paramagnetic material All of these None of these A feiTomagnetic material A diamagnetic material A paramagnetic material All of these None of these A feiTomagnetic material A diamagnetic material 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 None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf 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? 7.75 µA None of these 7.8 µA 10.3 µA 14.8 µA 7.75 µA None of these 7.8 µA 10.3 µA 14.8 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the amplitude at 90% of the maximum value the maximum positive or negative value None of these the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value the amplitude at 90% of the maximum value the maximum positive or negative value None of these the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What causes the depletion layer? Barrier potential None of these Doping Recombination Ions Barrier potential None of these Doping Recombination Ions ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS