Electronic Principles What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? 690 ohm None of these 150 ohm 220 ohm 445 ohm 690 ohm None of these 150 ohm 220 ohm 445 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? 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 amount of magnetic flux that is not confined to the core material of an electromagnet None of these The force of attraction between the poles of a permanent and temporary magnetic field 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 amount of magnetic flux that is not confined to the core material of an electromagnet None of these The force of attraction between the poles of a permanent and temporary magnetic field ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 0.25 µA 300 µA None of these 250 µA 350 µA 0.25 µA 300 µA None of these 250 µA 350 µA 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? 55 A None of these 55.86 A 16.3 mA 18.2 mA 55 A None of these 55.86 A 16.3 mA 18.2 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain power transformer has a turns ratio of 5. What voltage can you expect at the secondary winding when you apply 120 V to the primary winding? None of these 600 V 4.73 24 V 0.4 V None of these 600 V 4.73 24 V 0.4 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle None of these equal to 1.41 times the peak amplitude the number of cycles completed in one second equal to 0.707 times the peak amplitude the time required to complete one full cycle None of these equal to 1.41 times the peak amplitude ANSWER DOWNLOAD EXAMIANS APP
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