Electronics ETA Certification Practice Exam

The "triboelectric effect" causes what kind of electricity? - Answer-Static The law of static electrical charges states: - Answer-like charges repel Minute particles that make up all possible elements and still retain the unique chemical characteristics of the element are called _____________. - Answer-Atoms A molecule is the smallest particle of matter that can exist by itself. (1) - Answer-True (1) A basic atom must contain what two types of subatomic particles? - Answer-Electron and proton An electron has _______________. - Answer-a Negative charge What two types of energy are used throughout electronics? - Answer-Kinetic and potential Electrical direct current flowing in a wire produces a magnetic field: - Answer-at right angles to current flow A material is magnetized when the: - Answer-domains are in alignment A material that can be magnetized easily falls into this category: - Answer-Ferromagnetic Invisible lines of force that surround a magnet are called ___________________. - Answermagnetic flux lines The pole of a magnet from which flux leaves is called the __________________. - Answer-north _________________ force produces magnetic flux. - Answer-Magnetomotive What class of fire extinguisher is used on an oil fire? - Answer-B It is dangerous to use wooden handled tools around high voltage due to their ability to absorb moisture. (2) - Answer-True (2) In order to eliminate possible fire hazards, rags should be stored in ________________ - Answer-metal containers When an individual receives an electrical shock, an immediate symptom can be _______________. - Answer-Cardiac arrest What happens as protective eye goggles age? - Answer-Their resistance to scratching decreases