Electronic Principles What is the smallest number of polarities required for current flow? Two - a negative terminal and a positive terminal Four - two negative and two positive None of these One - a negative terminal Three - negative, positive and neutral terminals Two - a negative terminal and a positive terminal Four - two negative and two positive None of these One - a negative terminal Three - negative, positive and neutral terminals ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 200 mA 7.8 mA 300 mA None of these 208 mA 200 mA 7.8 mA 300 mA None of these 208 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 megohms is: one million ohms 100,000 ohm 1 k ohm one-millionth of an ohm None of these one million ohms 100,000 ohm 1 k ohm one-millionth of an ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: None of these the maximum positive or negative value the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value None of these the maximum positive or negative value the amplitude at 1.41 times the maximum value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A basic capacitor is composed of: two dielectrics separated by a conductor two coils separated by a conductor two conductors separated by a dielectric None of these two coils separated by a dielectric two dielectrics separated by a conductor two coils separated by a conductor two conductors separated by a dielectric None of these two coils separated by a dielectric ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode? 18.2 mA 55.86 A None of these 16.3 mA 55 A 18.2 mA 55.86 A None of these 16.3 mA 55 A ANSWER DOWNLOAD EXAMIANS APP
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