Electronic Principles Which one of the following phrases best describes residual magnetism? Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The force of attraction between the poles of a permanent and temporary magnetic field The amount of magnetic flux that is not confined to the core material of an electromagnet None of these The circular magnetic field that surrounds a conductor carrying a current Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The force of attraction between the poles of a permanent and temporary magnetic field The amount of magnetic flux that is not confined to the core material of an electromagnet None of these The circular magnetic field that surrounds a conductor carrying a current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source? 157 raA 0.151 mA 0.995 mA None of these 2.02 A 157 raA 0.151 mA 0.995 mA None of these 2.02 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An ideal voltage source has A load-dependent current Infinite internal resistance None of these A load dependent voltage Zero internal resistance A load-dependent current Infinite internal resistance None of these A load dependent voltage Zero internal resistance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If N1/N2 = 2, and the primary voltage is 120 V, what is the secondary voltage? 40 V 60 V 36 V 0 V None of these 40 V 60 V 36 V 0 V None of these ANSWER DOWNLOAD EXAMIANS APP
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? None of these 550 Ohm 310 Ohm 400 Ohm 410 Ohm None of these 550 Ohm 310 Ohm 400 Ohm 410 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles For normal operation of the transistor, the collector diode has to be None of these Operating in the breakdown region Reverse-biased Nonconducting Forward-biased None of these Operating in the breakdown region Reverse-biased Nonconducting Forward-biased ANSWER DOWNLOAD EXAMIANS APP
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