Journeyman Electrical Closed Book Exam #1

Journeyman Electrical Closed Book Exam #1 An advantage of an electromagnent over a permanent magnent is that ____. -Answer- An electromagnent can be switched on and off. An excellent diffuser surface is one that ____. -Answer-Scatters light uniformly in all directions. Light is converted into electricity ____. -Answer-In a photovoltaic cell. The rotating part of a DC motor is known as ____. -Answer-Armature. A device used to pull wires through a conduit is called ____. -Answer-Fish tape. In making a resistance test, remember that the resistance of a short circuit is ____. - Answer-Approximately zero. To increase current capacity, battery cells are connected in ____. -Answer-Parallel. The hot resistance of an incandescent lamp is approximately ____ times it's cold resistance. -Answer-Ten. The proper way of measuring an unknown voltage with a multi-tester is to ____. - Answer-Start measuring at the highest range. A capacitor stores ____. -Answer-A charge. ____ has the lowest electrical strength. -Answer-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. -Answer-Knife. If a bare live conducted is touched accidentally, the severity of electrical shock is determined primarily by ____. -Answer-The contact resistance between the bare wire and the person at the point of contact