Electronic Principles Holes act like: Positive charges Atoms Negative charges Crystals None of these Positive charges Atoms Negative charges Crystals None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the power dissipation of a resistance that has 24 V dropped across it and 0.25 A flowing through it? None of these 6 W 64 W 3 W 122 W None of these 6 W 64 W 3 W 122 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W? 844.5 Ohm None of these 3890 Ohm 1234 Ohm 692.2 Ohm 844.5 Ohm None of these 3890 Ohm 1234 Ohm 692.2 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil None of these frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil None of these frequent changes in the direction of current through the coil causes heating effects in the core material ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 24.2 mA 34.4 mA 28.4 mA 68.4 mA None of these 24.2 mA 34.4 mA 28.4 mA 68.4 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? 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 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 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS