Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? 6 W 64 W 122 W None of these 3 W 6 W 64 W 122 W None of these 3 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? 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 Magnetism that remains in the core of an electromagnet after the current through the coil is turned off None of these 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 Magnetism that remains in the core of an electromagnet after the current through the coil is turned off None of these 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? 20 k Ohm or more None of these 20 km or less 200 k Ohm or less 200 k Ohm or more 20 k Ohm or more None of these 20 km or less 200 k Ohm or less 200 k Ohm or more ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 6 85 9 None of these 81 6 85 9 None of these 81 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 208 mA None of these 200 mA 7.8 mA 300 mA 208 mA None of these 200 mA 7.8 mA 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff voltage source has a resistance of At least 10 Ohm less than 10 Ohm More than 100 k Ohm Less than 100 k Ohm None of these At least 10 Ohm less than 10 Ohm More than 100 k Ohm Less than 100 k Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS