Electronic Principles Which one of the following phrases best describes residual magnetism? 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 circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field 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 circular magnetic field that surrounds a conductor carrying a current The force of attraction between the poles of a permanent and temporary magnetic field None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts chemical energy to electrical energy is called a: chemical cell solar cell None of these electric device thermocouple chemical cell solar cell None of these electric device thermocouple ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff? 50 Ohm or more None of these 5 Ohm 100 Ohm 6 Ohm 50 Ohm or more None of these 5 Ohm 100 Ohm 6 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff voltage source has a resistance of less than 10 Ohm Less than 100 k Ohm At least 10 Ohm None of these More than 100 k Ohm less than 10 Ohm Less than 100 k Ohm At least 10 Ohm None of these More than 100 k Ohm 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? 250 µA 0.25 µA 350 µA 300 µA None of these 250 µA 0.25 µA 350 µA 300 µA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 kV is: 1000 mV 100 mV 1000 V 1.00 V None of these 1000 mV 100 mV 1000 V 1.00 V None of these ANSWER DOWNLOAD EXAMIANS APP
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