Journeyman Electrical Closed Book Exam #1 Questions With Correct Answers

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. The voltage per turn of the primary of a transformer is ____ the voltage per turn of the secondary. - Answer The same as. An open resistor when checked with an ohmmeter reads ____. - Answer Infinite. The larger the diameter of the wire, the ____ is its resistance. - Answer Lesser. Service heads and goosenecks in service entrance cable shall be ____ point of attachment of the service drops to the building. - Answer Above the.