Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 400 Ohm 410 Ohm 550 Ohm 310 Ohm None of these 400 Ohm 410 Ohm 550 Ohm 310 Ohm None of these 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 the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value None of these the amplitude at 90% of the maximum value the maximum positive or negative value the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately describes the nature of inductive reactance? Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is another term for counter emf Inductive reactance is a force that tends to overcome the effects of counter emf None of these Inductive reactance is an opposition to current flow in dc circuits Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is another term for counter emf Inductive reactance is a force that tends to overcome the effects of counter emf None of these Inductive reactance is an opposition to current flow in dc circuits ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The south pole of a magnet is the one: that would be repelled by the north pole of another magnet that would be attracted to the earths north magnetic pole that has its molecules arranged in a random pattern None of these that would be attracted to the earth's south magnetic pole that would be repelled by the north pole of another magnet that would be attracted to the earths north magnetic pole that has its molecules arranged in a random pattern None of these that would be attracted to the earth's south magnetic pole ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the impedance of a series RC circuit? The impedance is greater than the sum of the resistance and capacitive reactance None of these The impedance is equal to the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is less than the sum of the resistance and capacitive reactance The impedance is greater than the sum of the resistance and capacitive reactance None of these The impedance is equal to the sum of the resistance and capacitive reactance The impedance is greater than either the resistance or capacitive reactance but less than their sum The impedance is less than the sum of the resistance and capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage? 60 V 36 V 0 V 40 V None of these 60 V 36 V 0 V 40 V None of these ANSWER DOWNLOAD EXAMIANS APP
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