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 The circular magnetic field that surrounds a conductor carrying a current None of these 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 The circular magnetic field that surrounds a conductor carrying a current None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Positive ions are atoms that have Gained a proton Lost an electron None of these Lost a proton Gained an electron Gained a proton Lost an electron None of these Lost a proton Gained an electron ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In an intrinsic semiconductor, the number of free electrons Equals the number of holes Is less than the number of holes None of these Is greater than the number of holes Impossible to say Equals the number of holes Is less than the number of holes None of these Is greater than the number of holes Impossible to say ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio for the transformer specified in the above question? 10.738 1.5 0.707 None of these 0.575 10.738 1.5 0.707 None of these 0.575 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of a generator? Like magnetic poles repel; unlike poles attract Current is induced in a conductor that is moving through a magnetic field None of these Current flowing through a conductor generates a magnetic field Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract Current is induced in a conductor that is moving through a magnetic field None of these Current flowing through a conductor generates a magnetic field Like magnetic poles attract; unlike poles repel ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage? None of these 3 V 16 V 8 V 7.5 V None of these 3 V 16 V 8 V 7.5 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS