ECELab.com General Electronics Auto-Reviewer
1) In the cgs system, the unit of flux is called what?a. Weber b. Gilbert c. Maxwell d. Gauss 2) What do you call a group of atoms whose individual magnetic moments are aligned with each another?a. lattice b. range c. sphere d. domain 3) Which of these has a B-H curve that is not a straight line?a. air b. silicon steel c. soft iron d. wood 4) Electrical energy is most practically measured using which of these units?a. watt b. watt-hour c. kW-h d. MW-hr 5) The magnitude of electric current is a measure of what?a. rate of producing electrons b. number of electrons passing a point c. number of electrons in the conductor d. voltage across a conductor 6) An electron in the conduction band has what compared to an electron in the valence band?a. lower energy b. higher energy c. higher charge d. lower charge 7) The current in an electric circuit is equivalent to which of the following in a magnetic circuit?a. magnetic potential b. mmf c. flux d. flux density 8) Which of the following units is used for measuring flux density?a. Weber b. Tesla c. Maxwell d. Gauss 9) Which of the following passive components resists an instantaneous change in current?a. resistor b. capacitor c. inductor d. none of the above 10) The mutual inductance between two coils may be decreased by which of the following methods?a. moving the coils away from each other b. moving the coils closer to each other c. increasing the number of turns of the coils d. using a common core
