Electronics ETA Certification Practice Exam Questions With Correct Answers

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 ___________________. - Answer magnetic 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 Safety precautions to be followed when working on high-voltage equipment include which of the following? - Answer All jewelry should be removed The main purpose of a safety observer is to: - Answer turn off equipment in use and apply emergency first aid or cardiopulmonary resuscitation if needed You should use caution when talking to someone who is operating electrical equipment because the distraction: - Answer • could damage the equipment • both could be injured • could ruin an electronic device Which device would most likely include a light level meter? - Answer Camera The most common functions of a generic multimeter are _________________________. - Answer voltmeter, ammeter and ohmmeter Digital multimeters eliminate which of the following disadvantages of analog meters? - Answer • Low impedance • Poor accuracy • Parallax errors The Wheatstone bridge can be used for precision measurements of: - Answer resistance The ammeter setting on a multimeter indicates what type of reading? - Answer current A resistor with color bands of blue, gray and black has a value of _______________. - Answer 68 ohms 20%