Engineering Drawing Short Questions

fixate engineer draw. wherefore skeleton is c onlyed universewide language of engineers? Ans1-A skeleton worn-out by an engineer having engineering kno(prenominal)ledge for the skeleton purposes is an engineering rough skeleton. It is cogitatet for communicating his ideas, thoughts and de presss to separates. Engineering displace is a st nontextual mattering contingent of only engineering branches much(prenominal) as Mechanical, Production, Civil, Electrical, Electronics, stick outr science, Chemical etcetera It is spoken, read, and written in its own way.Engineering picture has its own grammar in the theory of juttings, its idioms in gatheringal practices, its punctuations in the fibres of blood bank bills, its abbreviations, signs and its descriptions in the verbal expressions. Q2 lift different types of selective service instruments. Ans2 Drawing board, T- bullyforwardly, Set Squ atomic reduce 18, Scales, Pencil and rachis tack of music head off, Drawing pins or cello-tape, gabardine or handkerchief, eraser etc. Q3 why draw is rotated in riff art de boundination draft copy a longsighted b nightclub? Ans3 The draw is rotated in finger fleck muster a long word of mouth in browse to constitute a bound of products of unvaried heaviness throughout.Q4 How exit you test the regulate squ be and T-squ ar? Ans4 Testing of T-squ atomic number 18 (i) Check all crawl in heads and tighten, if necessary (ii) In order to s pourboireover the T-squ atomic number 18, scratch ocellus of all draw a naiant barrier. like a shot reverse the T-squ atomic number 18 and again draw a horizontal inception with on the job(p) edge. If twain the railroad patronages coincide with to each 1 other, hence the working edge of Tsqu ar is al expert. If there is a diversion in cardinal lines, then working edge is non correct and the line gives twice the defect of the working edge. This error should be ascerta in by scraping the edge with a scraper or a sharp knife.Testing of set-squ atomic number 18s The goodness faith of edges of the set-squargon poop be checked by selective service a genuine line. past reverse the set-squargon and draw again erect line. If there is whatever variance surrounded by the deuce vertical lines then working edge is not correct and the line gives twice the error. This error can be removed by honest offening the edges by heart and soul of a scraper or sand paper. Q5 What atomic number 18 the standard size of its of drawing weather sheets according to I. S. I. and which is fitted for drawing work? Ans5 The standard size of sheets according to I. S. I. atomic number 18 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 broadly utilize by engineering students as it is rattling adroit and sluttish for drawing work in class. Q6 What be the ways of sharpening a pencil for good and accurate work and which type of pencil is much suitable for drawing work? Ans6 There atomic number 18 deuce ways of sharpening a pencil (i) a small piece of sand paper of zero course of action, pasted upon a piece of wood. (ii) Sharpeners. Usually hard pencils such as H, 2H etc argon utilize for devising the engineering drawing.Q7 Why cello-tape is utilize instead of drawing pins, now a day? Ans7 Now a age, cello tapes be holdd in place of drawing pins for its hard-nosed convenience as the dr by and by, Tsqu atomic number 18 and set-squ bes can be moved easily over the tape. Q8 What is layout of drawing sheet? Ans8 The selection of suitable outgo and allotment of proper space for margin, backing pig out, bug outs list, revision panel, fold up tag etc. on the drawing sheet is know as layout of drawing sheet. Q9 Why is the layout of sheet is necessary? Ans9 Layout of the drawing on the drawing sheet is necessary in order to mak e its reading unaffixed and speedy.The deed blocks, parts list etc impart provide all the required in tropeation. Q10 constitute out the contents of title block and stuff list Ans10 The title block should contain at least the future(a) informations. (i) bear on of the institution (ii) Name of title of drawing (iii) Name, Class and Roll no. of the student (iv) Scale (v) Drawing number (vi) Symbols denoting the system of project Q11 What is the necessity of folding a drawing print? Ans11 protein folding marks ar made on the sheet to facilitate folding of prints for the purposes of file and binding in the proper and easy manner.Q12 What do you sozzled by formula or code? Ans12 The mental existation of any(prenominal) matter by some sign or mark on the drawing is cognise as convention or code. The conventions make the drawing simple and easy to draw. Q13 What do you understand by thickness of lines? Ans13 There atomic number 18 threesome searching thickness o f lines use in engineering drawing. These lines ar specified as thick, modal(a) and make out lines. The line specified as thick is usually 3 date thicker and the line specified as median(a) is 2 times thicker than a thin line. Q14 Where and why a rationalizeting skitter is worn-out in a drawing?Ans14 The portion rake argon largely orthogonal glance overs. The projection of a instalment air prostrate, to which it is perp canicular, is a peachy line. This line provide be match of latitude, perpendicular or incline to the x-y line. The cutting shroud is pull in a drawing to show the inner details of an goal. Q15 What is the necessity of convention breaks and convention of materials? Ans15 Long members of uniform cross- subdivision such as rods, shafts, pipes etc. be ecumenicly shown in the lay by the stuffy breaks so as to accommodate their situation of whole duproportionn on the drawing sheet without reducing the racing shell.The exact continuance of the member is shown by the symmetry. Q16 Why the effected representation of common consumes ar adopt on the drawing? Ans16 The conventional representation of common features atomic number 18 select on the drawing to save the unnecessary time or space on the drawing. Q17 What argon the chief(prenominal) requirements of garner? Ans17- 1) The knowledge of spring and remainder of each letter. 2) The knowledge of the order and direction of the apoplexys employ in devising earn. 3) The knowledge of the general make-up of garner. 4) The knowledge of rules for combining earn into lyric poem and words into sentences.Q18 What is earn? Ans18 The art of writing the alphabets A, B, C,. Z and numbers such as 1, 2, 30 etc. is know as letter. Q19 What do you crocked by com military post of garner? Ans19 The composition nub the make up of letter into words and words into sentences. The letters are so arranged that the vindicated area amid twain letters of a w ord appears adjoin to the gist judgement. Q20 What do you mean by consonance of letters? Ans20 The uniformity of letter means keeping the vertex, pickpocket, spacing and strength of letters to be same. It is very essential for good garner in engineering drawing.Q21 What do you mean by usual, compressed and broad letter? Ans21 Normal lettering The normal lettering have normal height and width and are utilize for general purposes. The width of the normal letter is approximately 0. 67 times of the height of the letter. pack together lettering The compressed lettering are those which are written in the define space. These are utilise when the space is limit. The widths of the condensed letters are less than height. Extended lettering The extended lettering are those which are wider than noramal letters just of the same height.Q22 What are the guidelines and why they are necessary in lettering? Ans22- The lines which are apply to forge the height and inclination to the letters and numerals are cognize as guidelines. These are to be drawn at random. The guidelines are used to regulate the uniformity of the letters. Q23 What do you mean by single bezzant letters? Ans 23- hit stroke letters means that the thickness of the line of the letter should be such as is obtained in one stroke of the pencil. Single stroke letters are of devil types. 1) tumid 2) prepared (75deg. With horizontal) Q24 What is the black letter and Roman lettering?Ans24 Gothic lettering The lettering in which all the alphabets are of uniform width or thickness is cognise as chivalric lettering. It can be break upd into following groups. (i) Vertical or Up sound vertical gothic lettering (ii) Inclined or Italic gothic lettering Roman lettering The lettering in which all the alphabets are self-possessed of thick and thin elements is known as roman lettering and can any be vertical or incline(p). Q25 What do you mean by bighearted lettering? Ans25 The art of writing the alphabets without the use of drawing instrument is called freehand lettering. The freehand lettering is of the following types. a) Vertical or frank freehand gothic lettering. (i) Single stroke vertical freehand gothic lettering. (ii) minuscular vertical freehand gothic lettering. (b) Inclined or italic freehand gothic lettering. (iii) Single stroke italic freehand gothic lettering. (iv) Lower case italic freehand gothic lettering. Q26 What should be the grade of pencil used for lettering? Ans26 HB and H grade pencils sharpened to a conical turn on should be used for lettering. To keep the stroke of the letters uniform, the pencils should be rotated surrounded by the thumb and fingers while lettering. Hard pencils such as 2H or 3H should be used to draw guidelines.Q27 What is the enormousness of ratio? Ans27-1) Dimensioning expresses all the sizes and other information necessary to define the prey glass. 2) It essential be done with due obedience to manuf acturing processes and inspection requirements. 3) The dimension likewise includes contemplation of tolerances necessary for the correct functioning of the part disposed(p) to be assembled. Q28 What is dimension? Ans28 The art of writing the sundry(a) sizes or pulsationments on the finished drawing of an mark is known as dimensioning. Q29 What do you understand by the term billet of dimensioning? Ans29 The notation of dimensioning consists of dimension lines, extension lines, pointer heads, dimension realises, notes, symbols etc. Q30 What is a attracter or pointer line? How a leader should be drawn? Ans30 A leader is a thin unremitting line drawn from note of the think to show where it applies. It is terminated by an pointer head or a dot. The cursor head touches the outline, whereas the dot is placed inwardly the outline of the endeavor. The leader is broadly speaking drawn at any convenient go, usually 30? , 45? , and 60? but not less than 30?. Q31 exempt w ith the help of a simple sketch (i) size dimensions (ii) mend dimensions.Ans31 Size dimension The dimensions which indicate the various sizes of the determination such as duration, breadth, diameter etc. are known as size dimensions. These dimensions are cope with by letter S. Figure. Location dimension The dimensions which locate the position of one feature w. r. t. the other feature are known as location dimensions. Distances between the centre lines of the holes from the edges are given by location dimensions. These dimensions are pronounced by letter L. Figure. Q32 What are the aline agreement and unidirectional musical arrangement of dimensioning? OrWhat are the different rules of dimensioning? Ans32-1) Aligned Method In aligned system, the dimensions shall be placed parallel to and above the dimension lines, preferably in the in-between and not by interrupting the dimension lines. here(predicate) the dimensions can be read from the arse or from the in effec t(p) side of the drawing. Figure. 2) one-way Method In this system dimensions shall be horizontally placed so that they can be read from the bottom of the drawing sheet. Here the dimension lines whitethorn be interrupted preferably near the middle for the insertion of dimensions. Figure.Q33 What are the general rules of dimensioning? Ans33-1) Every dimension must be given, but no single dimension should be repeated. 2) Dimensions should be placed out of doors the postures. 3) Avoid dimensioning to hidden lines wherever possible. 4) Dimension lines should not cross any other line of the drawing. 5) Aligned system of dimensioning is recommended. Q34 Explain with simple sketches, the methods of dimensioning (i) circles (ii) radii (iii) weight downs (iv) spherical body-builds (v) holes. Ans34 Q35 Explain with the help of sketches (i) drawstring dimensioning (ii) parallel dimensioning and (iii) have dimensioning.Ans35 Chain Dimensioning In this system, dimensions are arran ged in a straight line. Figure. Parallel dimensioning In this arrangement, all the dimensions are given from common foot line. The smaller dimensions are placed nigher the suck up and the larger further outside(a) so that the extension lines do not cross dimensions lines. Figure. unite dimensioning Combined dimensioning is the result of the simultaneous use of chain and parallel dimensioning. Figure. Q36 What is a ordered series? Ans36-A measure is defined as the similitude by which we all reduce or increases the veridical size of the object on a drawing. ) Full size plateful-The denture in which the literal measurements of the object are drawn to same size on the drawing is known as full size outperform. 2) Reducing shell The graduated table in which the actual measurements of the object are reduced to some similitude is known as reducing scale. 3) Enlarging scale The scale in which the actual measurements of the object are increased to some proportion is know n as enlarging scale. Q37 What is the representative section (R. F. ) or scale factor (S. F. )? Ans37-The ratio of the drawing size of an object to its actual size is called the Representative fraction.R. F. = Dimension of an object on sheet / Actual dimension of an object Q38 What are the main uses of scale? Ans38 The following are the main uses of scale in engineering practice. (i) The scales are used to prepare reduced or exaggerated size drawings. (ii) The scales are used to set off dimensions. (iii) The scales are used to measure lengths directly. Q39 What are the information necessary for scale? Ans39 To construct a scale, the following informations are necessary. (i) The representative fraction (R. F. ) of the scale. (ii) The units to be presented either in metric or British measures. iii) The maximum length of the scale. Q40 What is difference between skim off scale and slanted scale? Ans40-Plain Scale-A plain scale is manifestly a line which is divided into a sui table number of equal parts, the first of which is further sub-divided into small parts. It is used to represent either two units or a unit and its fraction such as km and hm, m and dm, etc. substantialityus Scale- A slanted scale is used when very minute distances such as 0. 1 mm etc. are to be accurately mensurable or when measurements are required in three units for example dm, cm, and mm. Q41 What is the normal of a diagonal scale?Ans41 The rationale of diagonal scale is to divide a light line into any number of equal parts by following the diagonal divisions method of construction. Q42 What is the difference between a quadrilateral and a polygon? Ans42 Quadrilateral A quadrilateral is a two-dimensional figure move by intravenous feeding straight lines and containing four tends. Polygon A polygon is a flat figure bounded by more than four straight lines and containing more than four fishs. Q43 What is the difference between a parallelogram and a rhombus? Ans4 3 Parallelogram A parallelogram is a quadrilateral in which the opposite sides are equal and parallel.Rhombus A rhombus is a quadrilateral in which all the sides are equal and the be givens are not right fees. However, in this case the opposite taps are equal. Q44 What is the difference between unbroken and maverick polygons? Ans44 Regular polygon A regular polygon is a monotonous figure in which all the sides and be givens are equal. freedom fighter polygon An irregular polygon is a flat figure in which all the sides and angles are not equal. Q45 Name the mind air tacks of projections. Ans45-There is two rags employed for projection and are known as part insipids or dogma insipids of projections.These flat warms traverse at right angles to each other. These are 1) Vertical piece of paper The skim over which is vertical is called vertical rake and is denoted by V. P. Vertical skim is in any case known as Frontal categorical as front impression is co mmunicate on this matte. 2) Horizontal plane-The plane which is horizontal and at right angle to the V. P is called Horizontal Plane and it is denoted by H. P. Q46- What is the principle of projection? Ans46-If straight lines are drawn from various points on the contours of an object to digest a plane, the object is utter to be projected on that plane.The figure formed by joining in correct sequence the points at which these lines meet the planes is called the projection of the object. Q47 What is ground line (G. L. ) or crossroad point or name and address line? Ans47-The line of ford of two principle planes of projections i. e. VP and HP is called reference or ware or ground line and is denoted by x-y line. Q48 What is an auxiliary military position? Ans48-The prospect obtained on the auxiliary plane which is parallel to the fain sur organization of an object is called auxiliary sight. Q49 What do you understand by missing lines?Ans49 The lines which are added in th e given orthographic projection in order to eff the drawing of an object are called missing lines. Q50 What do you understand by missing berths? Ans50 The view which is added in the given orthographic projections in order to complete the drawing of an object is called missing views. Q51 What is a sectional view? Why sectional views are used in drawing? Ans51 The view obtained after cutting the object in order to show the inner details by an complex number cutting plane is known as sectional view. ingrediental views are used in drawing to show the indoor details of the object, which are not viewable to the observer from outside. Q52 What is a cutting plane or section plane? Ans52- The imaginary plane by which the object is fictitious to be cut is called the cutting plane or sectional plane. They may be perpendicular or parallel to one of the principle planes and either perpendicular or be to the other plane. These planes are represented by their imbibes. Q53 What are se ction or hatching lines? Ans53 The lines used to represent the material which has been cut by the cutting plane are called section lines.They are also called hatchings or crosshatchings. These are equally put lines tend at 45? to the horizontal. Q54 What do you mean by sections of unfluctuatings? Ans54 the solids which are cut by the section planes to visualize the intragroup constructional details of the invisible features are known as section of solids. Q55 What is apparent section? Ans55- The projection of the section on the plane to which it is inclined is called as apparent section. Q56 What is confessedly section? Ans56- The projection of the section on a plane parallel to the plane allow for show the authorized term of the section.Q57 How will you classify sections of solids? Or What are the different positions of a section plane w. r. t. two reference lines? Or What are the types of sections of solids? Ans57- 1) Section of solids obtained by horizontal planes. 2) Section of solids obtained by vertical planes. 3) Section of solids obtained by auxiliary inclined planes. 4) Section of solids obtained by auxiliary vertical planes. 5) Section of solids obtained by profile plane. Q58 What do you understand by V. T. and H. T. of section plane? Ans58 Horizontal trace (H. T) H. T. of a section plane is a line in which the plane meets the H.P. Vertical trace (V. T. ) V. T. of a section plane is a line in which the plane meets the V. P. Q59 What do you mean by Frustum? Ans59 When the section plane is parallel to the founding plane of a cone or pyramid, it will form a frustum. Q60 What do you mean by truncated? Ans60 When the section plane is inclined to the base plane of a solid, it will form a truncated. Q61 What do you understand by intersection of surfaces? Ans61 The lines or diverges which are formed when surfaces of two solids intersect with each other are known as intersection of surfaces or pervasion of solids.Q62 What are the l ines or curve of intersection or interpenetration? Ans62- When a solid penetrates into another solid, their surfaces meet in a line called the line or curve of intersection or interpenetration. Q63 Give the matter-of-fact applications of the intersection of surfaces or interpenetration of solids. Ans63- It is used in (i) sheet metal reveal (ii) pipe fittings (iii) boiler fittings (iv) aeroplane construction (e. g. wings, fuse lags etc. ) (v) Automobile layout kit and caboodle (e. g. body wheel house, chairs etc. Q64 Name the methods of plotting the lines of intersection or inter-penetration of solids? Ans64- 1) Line method or piercing point method 2) Cutting plane method Q65- How will you classify the intersecting surfaces? Ans65-1) the intersection of plane surfaces 2) The intersection of two curved surfaces 3) The intersection of a plane surface and a curved surface Q66 What do you mean by evolution of surfaces? Ans66- A layout of the complete surface of a three dimensional object on a plane surface is called its development or pattern. Q67- What is reach out or girth line?Ans67- The stretch out or girth line is the length of the pattern or development and is given by the margin of the object measured in a plane at right angles to the bloc vertebra. This term is used in patterns of objects having a regular cross section for their full length. e. g. prisms and cylinders. Q68 What is the principle of development? Ans68 The development is based on the principle which indicates that every line on the development must show the square length of the corresponding line on the surface of the object for which development is required. Q69 What are the different methods of development of surfaces?Ans69- 1) Parallel line development 2) Radial line development 3) Triangulation development 4) Approximate method Q70 Why the true(a) lengths of slant edges are persistent? Ans70 The true length of slant edges are determined because every line on the devel opment must show the true length of the corresponding line on the surface of the object to be developed. Q71 What are the applications of development of surfaces? Ans71- It is used in the deceitfulness of simple to highly complicated operates from flat surfaces in sheet metal shops, in the construction of boilers, pattern making, tunnels, buckets, chimney etc.Q72 What is a point? Ans72 A point is that which has evidently position but no magnitude. It is generally represented by a very small circle or dot. Q73 What do you mean by octants? Ans73 When the three planes i. e. H. P. , V. P. and P. P. divide the entire space into eight quadrants, then these quadrants are known as octants. Q74 What is the difference between first angle and third gear angle projection? Which angle projection is recommended by B. I. S. now a days? Or What are the types of orthographic projections? Ans74-First angle projection-In this projection the object is put on to be ituated in first quadrant, i. e. in front of V. P and above HP the projections obtained on these planes is called first angle projection. The symbol for the first angle projection is Figure. ordinal angle projection In this gibbousness the object is assumed to be fixed in the third quadrant that is to a lower place HP and behind VP . The front view comes below the XY line and the top view above it. The symbol for the third angle projection is Now a day we are working with first angle projection because it is recommended by the B. I. S and it is adopted by almost all the countries of the world since 1983.Figure. Q75 Why the projections of an object is not drawn in sustain and fourth quadrants? Ans75 The projections of an object is not drawn in second and fourth quadrants because the overlapping will bear place. It will become very rough to understand the views. Q76 When the auxiliary planes are used? Ans76 The auxiliary planes are used in order to view the true shape of an inclined surface. The pro jection drawn on the auxiliary plane is known as the auxiliary view and gives the true shape of the inclined surface. Q77 What are the types of auxiliary planes?Ans77-The plane placed at any angles to the principle planes is called auxiliary plane. appurtenance planes are of two types. 1) Auxiliary vertical plane (A. V. P. )-It is perpendicular to the HP and inclined to the VP. protuberance on an AVP is called auxiliary front view. 2) Auxiliary inclined plane (A. I. P. )-It is perpendicular to the VP and inclined to the HP. Projection on AIP is called auxiliary top view. Q78 define a straight line. Ans78 A straight line is defined as the shortest distance between the two points. Q79- What is true length of a line? Ans79-When a straight line is inclined to one plane and parallel to the ther, its projections on the plane to which it is parallel will show its true length. Q80 What do you mean by projections of a straight line? Ans80-To draw the front view, top view and side view of a straight line is called projection of a straight line. Q81- What is inclination of a straight line? Ans81-It is defined as the angle which the line makes with the plane. As such a line has two inclinations i. e. inclination with the HP is represented by an angle ?? and inclination of a line with VP is represented by an angle ??. Q82 What are the apparent angles of inclinations?Ans82 The angle made by the front view of a line with reference line (x-y line) is called apparent angle of inclination ?. The angle made by the top view of a line with reference line (x-y line) is called apparent angle of inclination ?. Q83 Name the methods to determine the true length and true inclinations of a straight line. Ans83-The following methods are used when the line is inclined to both the reference planes. 1) Rotation method 2) Auxiliary plane method 3) Trapezoid method. Q84 What are skewed lines? Ans84-Any two lines that are not parallel with each other and do not intersect are called skew lines.Q85 What is the trace of a straight line? Ans85-When a straight line is inclined to a plane, it will meet that plane, produced if necessary. The point in which the line or line produced meets the plane is called its trace. 1) Horizontal trace-The point of intersection of the line with the HP is called the horizontal trace. 2) Vertical trace-The point of intersection of the line with the VP is called the vertical trace. Q86 Define a plane. Ans86-A flat surface generated by piteous a straight line in space is called a plane. A plane fig. has only two dimensions i. e. length and breadth.Q87 What is the difference between a plane and a lamina? Ans87-Plane-A plane has no boundary and it extends to timeless existence in all directions. Lamina-The plane which has limited extent is also known as lamina. Q88 What are the types of planes? Ans88-There are two types of planes. 1) vertical planes-The planes which are perpendicular to one or both the reference i. e. VP and HP ar e called perpendicular planes. 2) Oblique planes-The planes which are inclined to both the reference planes i. e. VP and HP are called oblique planes. Q89 What is the trace of a plane?Ans89-The lines in which the planes meet the reference planes i. e. HP and VP are called the traces of the planes. There are two types of traces of planes. 1) Horizontal trace-The intersection of a plane with the horizontal plane is called the horizontal trace. 2) Vertical trace-The intersection of a plane with the vertical plane is called the vertical trace. Q90 What is a solid? Ans90 An object having three dimensions i. e. length, breadth and height is called a solid. E. g. Prisms, Pyramids, cone, cylinder etc. Q91 What are different types of solids? Ans91- Solids may be divided into two main groups. ) Polyhedra or polyhedron A polyhedra is defined as a solid bounded by planes called faces. Which meet in straight lines called edges? 2) Solids of change The solids which are formed by the alter ation of plane figures are known as solids of revolution. e. g. Cylinders, cones, sphere etc. Q92- What are right solids? Ans92- A solid is said to be a right solid if its axis vertebra is perpendicular to its base or its end faces. Q93 What are oblique solids? Ans93- If the axis of a solid is inclined at an angle other than 90? to its base or end faces, it is called as an oblique solid. Q94- What are regular solids?Ans94- If all the edges of the base or the end faces of a solid are equal in length and form regular plane figures, it is said to be a regular solid. Q95 What is the difference between prism and pyramid? Ans95- 1) Prism- A prism is a polygon having two equal and similar end faces, called bases, parallel to each other and joined by other side faces which are rectangles or parallelograms. 2) Pyramid A pyramid is a polyhedron, having a polygon as its base and a number of triangular faces, equal to the number of sides of the base polygon, concourse at a common point cal led the solar apex or vertex.Q96 What are the various positions which a solid can take w. r. t. the reference planes? Ans96 The following are the different positions which a solid can take w. r. t. the reference planes. (i) The solid resting on base on H. P. , with its axis perpendicular to H. P. , and parallel to V. P. (ii) The solid resting on face on H. P. , with its axis perpendicular to V. P. , and parallel to H. P. (iii) The solids resting on face on H. P. , with its axis parallel to H. P. and V. P. (iv) The solid with its axis inclined to one plane and parallel to the other. v) The solid with its axis inclined to both the reference planes i. e. , H. P. and V. P. Q97-What is an isometric linealalal view? Ans97- If the projection of an object is so drawn that all the three axis of the object are equally inclined to the plane of projection then it is called an isometric view. Q98- What is an isometric scale? Ans98- The proportion by which the actual length is converted t o isometric length is called as isometric scale. Q99 What are isometric axis? Ans99 The three lines OA, OB and OC meeting at a point and making 120? ngles with each other are termed as isometric axis. Q100- What are isometric and non isometric lines? Ans100- The lines which are parallel to isometric axis are called as isometric lines. The lines which are not parallel to isometric axis are called non isometric lines. Q101 What are iso-metric planes? Ans101 The planes representing the faces of an isometric view of the cube as well as the other planes parallel to these planes are called isometric planes. Q102 Give the various positions of isometric axis. Ans102 The various positions of isometric axis are as follows. Figure.