Symbols, Conventions, and Abbreviations

Question 1

? are marks or letters standing for an object or process.

Answer 1

Symbols

Question 2

? are customary practices.

Answer 2

Conventions

Question 3

? are shortened forms of words or phrases.

Answer 3

Abbreviations

Question 4

Standards are never fixed and inflexible because new symbols are being added all the time. T or F

Answer 4

True

Question 5

National Electrical Contractors Association (NECA) are active in publishing and distributing standard graphic symbols for everyone who needs them. T or F

Answer 5

True

Question 6

? are usually added to a basic symbol in order to clarify what is needed.

Answer 6

Variations or Attachments

Question 7

? symbols are normally used when indicating steel members.

Answer 7

Structural

Question 8

? is a method used for exposing the inside of an object as though it has been chipped or cut through.

Answer 8

A section

Question 9

? are also used to show depths of drilled holes in general and the thickness of walls, partitions, and other shapes.

Answer 9

Sections

Question 10

? at the ends of the cutting plane line show the direction in which the section is viewed.

Answer 10

arrows

Question 11

the two general classifications of electrical symbols are ? and ?

Answer 11

Standard/Complete or One-line

Question 12

drawings or diagrams show each wire that an assembly or arrangement requires.

Answer 12

Standard/Complete

Question 13

Standard/complete drawing symbols are used only when there are special details that need to be shown. T or F

Answer 13

True

Question 14

? drawings or diagrams are simplified versions of complete diagrams in which the same circuit is indicated by a single line representing all three wires.

Answer 14

One-line

Question 15

The symbols shown are used on the ? to show right-of-way, access roads, steel or wood structures, and the line itself.

Answer 15

Plan

Question 16

The ? shows elevations, structure sites, kinds of timber, cultivated areas, and creeks or rivers in relation to the profile of the line.

Answer 16

Profile

Question 17

? are practices that have been adopted to represent symbols used with other basic symbols to further identify or limit the rating, capacity, size, or other governing factors of a device.

Answer 17

Conventions

Question 18

Threaded bolts and rods are drawn with ? symbols.

Answer 18

Mechanical

Question 19

Symbols used to represent concrete, gravel, or sand are examples of ? symbols.

Answer 19

Architectual

Question 20

The letters at the ends of the cutting plane line show the direction from which the section is viewed. T or F

Answer 20

False, those are arrows

Question 21

The broken line on the drawing is the high side of the profile; this is the contour of the terrain directly under the outside conductor of the line. T or F

Answer 21

True