Journeyman Electrical Closed Book Exam #1

Journeyman Electrical Closed Book Exam #1 An advantage of an electromagnent over a permanent magnent is that ____. - An electromagnent can be switched on and off. An excellent diffuser surface is one that ____. - Scatters light uniformly in all directions. Light is converted into electricity ____. - In a photovoltaic cell. The rotating part of a DC motor is known as ____. - Armature. A device used to pull wires through a conduit is called ____. - Fish tape. In making a resistance test, remember that the resistance of a short circuit is ____. - Approximately zero. To increase current capacity, battery cells are connected in ____. - Parallel. The hot resistance of an incandescent lamp is approximately ____ times it's cold resistance. - Ten. The proper way of measuring an unknown voltage with a multi-tester is to ____. - Start measuring at the highest range. A capacitor stores ____. - A charge. ____ has the lowest electrical strength. - Paper. A form of air switch in which the moving element is a hinged blade wedge between stationary contact blades when closed is a ____ switch. - Knife. If a bare live conducted is touched accidentally, the severity of electrical shock is determined primarily by ____. - The contact resistance between the bare wire and the person at the point of contact. The voltage per turn of the primary of a transformer is ____ the voltage per turn of the secondary. - The same as. An open resistor when checked with an ohmmeter reads ____. - Infinite. The larger the diameter of the wire, the ____ is its resistance. - Lesser. Service heads and goosenecks in service entrance cable shall be ____ point of attachment of the service drops to the building. - Above the. Type TW conductor is a ____ type. - Moisture resistant and thermoplastic. Steel is hard to magnetize because of its ____. - Low permeability. A repulsion motor is equipped with a ____. - Commutator. When the temperature of a copper wire is raised, the resistance ____. - Will increase. The capacitor in a capacitor-start induction-run AC motor is connected in series with the ____ winding. - Starting. The ____ is defined as the shortest distance measured between a point on the top surface of any direct buried conductor, cable, conduit and the top surface of finish grade. - Cover. An ohmmeter consists of a meter movement In series with ____. - A battery. Grease is a lubricant that is basically a combination of ____. - Oil and soap. Then continuity of a coil of winding may be determined by measuring the resistance of the coil. If the resistance measured is infinite, the coil winding is ____. - Open. A three-wa