Dear Readers, Welcome to ENGINEERING DRAWING LAB VIVA Interview Questions and Answers have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of ENGINEERING DRAWING LAB VIVA. These ENGINEERING DRAWING LAB VIVA Questions are very important for campus placement test and job interviews. As per my experience good interviewers hardly plan to ask any particular questions during your Job interview and these model questions are asked in the online technical test and interview of many IT & Non IT Industries.
Engineering drawing is a graphical language of an engineer to convey one’s ideas most effectively, easily, conveniently and with high speed.
So 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 terms of projections, conventional representations, types of lines, abbreviations, symbols and various geometric constructions.
Drawing board, drawing sheet, mini-drafter, scale, pencil and sand paper block, cello-tape, eraser and compass.
The standard size of sheets according to I.S.I. are:
A0 (1189 X 841),
A1 (841 X 594),
A2 (594 X 420),
A3 (420 X 297),
A4 (297 X 210) and
A5 (210 X 148).
Drawing sheet of size 594 X 420 i.e. A2 size is generally used by engineering students as it is very handy and easy for drawing work in class.
There are two ways of sharpening a pencil a small piece of sand paper of zero grade, pasted upon a piece of wood.
Nowadays, cello tapes are used in place of drawing pins for its practical convenience as the drafter, can be moved easily over the tape and the drawing board is spoiled by the use of drawing pins.
(i) Leave the following margins
1cm on top
1cm on bottom
1cm on right
3cm on left
(i) Make a title block(rectangle) of size 65 mm high and 185 mm width on the right bottom side for title block, parts list
Layout of the drawing on the drawing sheet is necessary in order to make its reading easy and fast. The title blocks, parts list etc will provide all the required information.
The title block should contain the following information:
(i) Name of the institution
(ii) Title of drawing
(iii) Name, Branch, section and Roll no. of the student
(iv) Type of scale used
(v) Drawing number
(vi) Type of symbol for the method of projection
The representation of any matter by some standard sign or symbol on the drawing is known as convention or code. The conventions make the drawing simple and easy to draw.
There are three distinct thickness of lines used in engineering drawing. These lines are specified as thick, medium and thin lines. The line specified as thick is usually 3 times thicker and the line specified as medium is 2 times thicker than a thin line.