Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? None of these 0.25 4 180 0.5 None of these 0.25 4 180 0.5 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly determines the power dissipation of a resistance when you know the power dissipation of a resistance when you know the voltage drop and current? P = I2R P = IE P = E2/R I = P/E None of these P = I2R P = IE P = E2/R I = P/E None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value the maximum positive or negative value the amplitude at 90% of the maximum value None of these the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value the maximum positive or negative value the amplitude at 90% of the maximum value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA? 18.8 V 0.17 V None of these 10.17 V 20 V 18.8 V 0.17 V None of these 10.17 V 20 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductance of a series inductor circuit is: None of these equal to the sum of the individual inductive-reactance values equal to the source voltage divided by total current less than the value of the smallest inductor equal to the sum of the individual inductance values None of these equal to the sum of the individual inductive-reactance values equal to the source voltage divided by total current less than the value of the smallest inductor equal to the sum of the individual inductance values ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the: rotor commutator armature None of these battery rotor commutator armature None of these battery ANSWER DOWNLOAD EXAMIANS APP
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