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Elect 101

KM 01

QuestionAnswer
uses for technical diagrams • Simplification • Explaining How a System Works • Standardizing Information • Maintaining Equipment
Interpretation of diagrams involves understanding many things. What are two key things you must understand in order to interpret diagrams? • An understanding of the basic symbols used to represent equipment and instrumentation. • The ability to interpret the tag or identification number.
Briefly describe the information you would find on a cable schedule • Cable number • Description of the cable • Description of cable run from and too
What will you not find on a cable schedule? • Colour of cable
The three components of the fire triangle required to create combustion are? • Fuel • Heat • Oxygen
If a mixture is too weak to burn it is described within explosive limits to be? • LEL
Give the definition for Flashpoint • Minimum temperature where vapors evaporate from a liquid to form a flammable atmosphere
Provide the formula for Ignition Energy • Ignition Energy = Voltage x Current x Time
Give the definition of Ignition Temperature • Minimum temperature where combustion starts & continues to burn even after removal of the heat source • Spontaneous combustion occurs when materials exceed their ignition temperature
List seven other potential ignition sources other than electrical sparks and arcs • Hot surfaces • Batteries • Friction • Static electricity • Lightning • Impact • Radio Frequency
Three factors that determine how hazardous a material can be are? • Flash point, • Explosive limits, • Ignition temperature
Created by: Salbatore
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