Engineering Drawing Short Questions
Q1 - Define engineering drawing. Why drawing is called universal language of engineers?
Ans1:-A drawing drawn by an engineer having engineering knowledge for the drawing purposes is an engineering drawing. It is meant for communicating his ideas, thoughts and designs to others. Engineering drawing is a starting point of all engineering branches such as Mechanical, Production, Civil, Electrical,
Electronics, Computer science, Chemical etc. It is spoken, read, and written in its own way. Engineering drawing has its own grammar in the theory of projections, its idioms in conventional practices, its punctuations in the types of lines, its abbreviations, symbols and its descriptions in the constructions.
Q2 - Name different types of drawing instruments.
Ans2 – Drawing board, T-square, Set Square, Scales, Pencil and sand paper block, Drawing pins or cello-tape,
Duster or handkerchief, eraser etc.
Q3 – Why pencil is rotated in finger while drawing a long line?
Ans3 – The pencil is rotated in finger while drawing a long line in order to get a line of uniform thickness throughout. Q4 – How will you test the set square and T-square?
Ans4 – Testing of T-square – (i) Check all screw heads and tighten, if necessary
(ii) In order to check the T-square, first of all draw a horizontal line. Now reverse the T-square and again draw a horizontal line with working edge. If both the lines coincide with each other, then the working edge of Tsquare is alright. If there is a difference in two lines, then working edge is not correct and the line gives twice the error of the working edge. This error should be rectified by scraping the edge with a scraper or a sharp knife.
Testing of set-squares – The straightness of edges of the set-square can be checked by drawing a vertical line.
Then reverse the set-square and draw again vertical line. If there is any difference between the two vertical lines then working edge is not correct and the line gives twice the error. This
Ans1:-A drawing drawn by an engineer having engineering knowledge for the drawing purposes is an engineering drawing. It is meant for communicating his ideas, thoughts and designs to others. Engineering drawing is a starting point of all engineering branches such as Mechanical, Production, Civil, Electrical,
Electronics, Computer science, Chemical etc. It is spoken, read, and written in its own way. Engineering drawing has its own grammar in the theory of projections, its idioms in conventional practices, its punctuations in the types of lines, its abbreviations, symbols and its descriptions in the constructions.
Q2 - Name different types of drawing instruments.
Ans2 – Drawing board, T-square, Set Square, Scales, Pencil and sand paper block, Drawing pins or cello-tape,
Duster or handkerchief, eraser etc.
Q3 – Why pencil is rotated in finger while drawing a long line?
Ans3 – The pencil is rotated in finger while drawing a long line in order to get a line of uniform thickness throughout. Q4 – How will you test the set square and T-square?
Ans4 – Testing of T-square – (i) Check all screw heads and tighten, if necessary
(ii) In order to check the T-square, first of all draw a horizontal line. Now reverse the T-square and again draw a horizontal line with working edge. If both the lines coincide with each other, then the working edge of Tsquare is alright. If there is a difference in two lines, then working edge is not correct and the line gives twice the error of the working edge. This error should be rectified by scraping the edge with a scraper or a sharp knife.
Testing of set-squares – The straightness of edges of the set-square can be checked by drawing a vertical line.
Then reverse the set-square and draw again vertical line. If there is any difference between the two vertical lines then working edge is not correct and the line gives twice the error. This