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 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 The circular magnetic field that surrounds a conductor carrying a current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used for creating static electricity? Light energy Mechanical energy None of these Chemical energy Solar energy Light energy Mechanical energy None of these Chemical energy Solar energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 43891 2 None of these 43922 3 43891 2 None of these 43922 3 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff? None of these 20 km or less 200 k Ohm or less 20 k Ohm or more 200 k Ohm or more None of these 20 km or less 200 k Ohm or less 20 k Ohm or more 200 k Ohm or more ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: None of these doubles the amount of total current has no effect on the total circuit current cuts the total current by one-half thrice the amount of total current None of these doubles the amount of total current has no effect on the total circuit current cuts the total current by one-half thrice the amount of total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 kV is: 1.00 V 100 mV 1000 mV None of these 1000 V 1.00 V 100 mV 1000 mV None of these 1000 V ANSWER DOWNLOAD EXAMIANS APP
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