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 circular magnetic field that surrounds a conductor carrying a current None of these The amount of magnetic flux that is not confined to the core material of an electromagnet 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 circular magnetic field that surrounds a conductor carrying a current None of these The amount of magnetic flux that is not confined to the core material of an electromagnet 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: battery armature rotor None of these commutator battery armature rotor None of these commutator ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? 150 ohm 445 ohm 690 ohm 220 ohm None of these 150 ohm 445 ohm 690 ohm 220 ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductance of a series inductor circuit is: equal to the sum of the individual inductance values equal to the sum of the individual inductive-reactance values less than the value of the smallest inductor equal to the source voltage divided by total current None of these equal to the sum of the individual inductance values equal to the sum of the individual inductive-reactance values less than the value of the smallest inductor equal to the source voltage divided by total current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total inductive reactance of a parallel inductor circuit is: equal to the sum of the individual inductance values equal to the source voltage divided by total current None of these equal to the sum of the individual inductive-reactance values less than the inductance value of the smallest inductor equal to the sum of the individual inductance values equal to the source voltage divided by total current None of these equal to the sum of the individual inductive-reactance values less than the inductance value of the smallest inductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff? None of these 10 Ohm 50 Ohm 60 Ohm 100 Ohm or more None of these 10 Ohm 50 Ohm 60 Ohm 100 Ohm or more ANSWER DOWNLOAD EXAMIANS APP
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