Lineman Apprentice Test Study Guide Rated A+

A fuse link is generally made from one of the following: silver, tin, lead, copper or an alloy such as tin-lead. What causes it to melt or blow? {Ans: Resistance in the fuse itself, it's designed to hold a certain amount of current for a predetermined amount of time.}Circuit Breaker - Some high voltage circuit breakers utilize compressed air to operate and interrupt circuit flow when contacts open. Operation is initiated by utilizing DC circuits, manually operating a switch, by remote supervisory controls or by relays that auto sense predetermined electrical faults. {Ans: }What are the component parts of a distribution system? {Ans: Distribution Substation, feeder circuits, switches, protective equipment, primary circuits, distribution transformers, secondaries, services.}An ___________ ______________ when used for service entrance protection and coordination, the electric fuses provide a buffer to prevent in-plant problems on the customer system from affecting service on the utility company system. {Ans: electronic fuse}When splicing distribution wires, how far should the line be laid out straight before splicing? {Ans: 10 ft}Define: Voltage Current Resistance Power {Ans: A) Electric potential energy between two points B) The flow of electrical charge, Caused by a difference in electrical potential C)Opposition