Grades of drawing pencils are organized in a scale based on softness or hardness. An "HB" pencil is found directly in the center of the scale.
"H" pencils feature harder graphite. (The "H" stands for "hard".) "B" pencils feature softer graphite. (The "B" stands for "black".)
The number found in front of the letter reveals just how soft or hard the pencil is. In other words, a "4H" pencil is harder than a "2H" pencil while a "4B" pencil is softer than a "2B" pencil.
Harder pencils produce lighter marks since less of the material is released as pressure is applied. Softer pencils make darker marks since more of the material is released. Therefore, a "4H" pencil will produce lighter marks than an "2H" pencil while a "4B" pencil will make darker marks than a "2B" pencil.
In engineering drawing pencils are classified into different grade according to Intensity of blackness and Hardness.
4) In engineering drawing pencils are classified into different grade according to
Answer is:
Both 1) Intensity of blackness and 2) Hardness
Explanation:
Related Engineering Drawing MCQ with Answers
Answer is:
One square meter
Explanation:
The area of each of the A paper sizes are set by the A paper size definitions. A0 is defined as having an area of 1 square metre, however the A paper size standard also specifies that each size is rounded to the nearest millimetre.
Thus A0 is 841 mm x 1189 mm giving an area of 0.999949 square metres. Approximately surface area of A0 size sheet is One Square Meter.
Answer is:
All of the above
Explanation:
Continuous thin line find its application in engineering drawing as
* Dimension line
* Projection line
* Leader line
Answer is:
All of the above
Explanation:
Thin chain line find its application as
* centre lines
* Lines of symmetry
* Trajectories
Answer is:
All of the above
Explanation:
Elements of dimensioning includes Projection lines, Leader lines and Termination of the dimension line.
