SLTC Final Review Questions With
Correct Answers
There are three important facts to remember about electrical charges:-correct-
answer-1. Opposite electrical charges of equal valie cancel each other out
2. Opposite electrical charges attract each other
3. Like electrical charges repel each other
Protons-correct-answer-Positively charged particles
All atoms contain-correct-answer-Protons + , Electrons -,
Two important factors understanding atoms:-correct-answer-The law of charges
state that opposite charges attract, like charges repel.
Types of circuits-correct-answer-A circuit is a path through which current can flow.
There are two basic types of circuits: series circuits and parallel circuits. A series
circuit has a single current path. The components in a series circuit contains two
or more parallel paths through which current can flow. The components in a
parallel circuit are connected side by side.
, 2|Page
Series circuit-correct-answer-Contains only one path through which current can
flow. A break in the current path of a series circuit interrupts the entire circuit
Parallel circuits (voltage E)-correct-answer-Always contain two or more paths, or
legs, through which current can flow. It is possible to switch the current off in one
or more legs without interrupting the flow of the current through the remained of
the circuit.
The overall power system consists of four basic "sub systems"-correct-answer-1.
Generation
2. Transmission
3. Substations
4. Distribution
Generation facilities-correct-answer-Usually located a long distances from the
load centers
Energy from coal, oil, gas, and steam, water or atoms must first be converted to
mechanical power to turn the generators, which, in turn, produces electricity.