### DMM MECH - itibalasore.org

`1.The standard size of drawing board according to BIS(IS962‐1967) is (500*350*15)is designated as‐ (a)D0 (b)D1 (c)D2 (d)D3 2.The ……..is used for transforming the measurements from scale to the drawing‐ (a)Compass (b)Divider (c)Scale (d)Protractor 3.The pencil known as ………..is widely used by the engineering students and in drawing offices. (a)Drawing pencil (b)Clutch pencil (c)Stylus (d)None of these 4.As per BIS the area of drawing paper designated as A5 is………… (a)0.00312m2 (b)0.0625m2 (c)0.125m2 (d)0.0312m2 5.As per BIS the size of the title box is‐ (a)195mm*65mm (b)185mm*65mm (c)205mm*65mm (d)201mm*60mm 6. Long break are shown by ……….. (a)Continuous thin line (c)Chain thin line (b)Continuous thick line (d)Continuous thin line with zig zag 7.The representation of any matter by some sign on the drawing is known as ………….. (a)convention (b) Symbol (c)Size (d)Mark 8.Generally the italics are written at ……………………..degree (a)70 (b)80 (c)105 (d)75 9. Usually the section lines are drawn at……………………………..degree to the horizontal. (a)30 (b)60 (c)75 (d)45 10.Ratio of the distance on a drawing to the corresponding actual size of the object is known as………………. (a)Respective Fraction (b)Representative Fraction (c)Correction Fraction (d)None of these 11.To draw the drawing of the small parts large than their real size …………………scale is used. (a)Full size (b)Reduction (c)Enlarging (d)Plain 12.Scales having same RF but graduted to read different units are known as ………………………… (a)Vernier (b)Comparative (c)Diogonal (d)Plain 13.Surface roughness of a object on a drawing is represented as ………………… (a)Circle (b)Square (c)Triangles (d)Rectangles 14.Drilled and honed holes are designated by following grades respectively‐ (a)H5,H11 (B)H6,H10 (C)H10,P5 (D)H5,H6 15. If the position of a point or object is fixed in third quadrant , then it will be‐ (a)Above HP, infront of VP (b)Below HP, Behind VP (c)Above HP, Behind VP (d)Below HP, Infront of VP 16.Name the curved traced out by a point on the circumference of a circle, which rolls outside anather circle of some diameter— (a)Cycloid (b)Hypo cycloid (c)Cardiod (d)None of these 17.The units of RF is……………………. (a)Cubic centimeter (b)centimeter (c)Square centimeter (d)none of these 18.When a right circular cone is cut by a plane passing through its apex ,the curve obtained is... (a)Ellipse (b)Parabola (c)Hyperbola (d)Triangle 19.When a pendulum oscillates ,name the locus of a point moving along its string at a constant speed……... (a)Cycloid (b)Involute (c)Spiral (d)Helix 20.Key is used in shaft and bush to restrict the (a)Longitudinal movement (b)Radial movement (c)Vertical movement (d)Reciprocating movement 21.Lead screw of lathe is provided with (a)Metric ‘V’ thread (b)B.S.W thread (c)Saw tooth thread 22.Head height of standard hexagonal bolt is………… (a)1/4 d (b)1/2 d (c)2d (d)7/8 d (d)Square thread 23.Where a number of dimensions has a common detum we use (a)Continual dimensioning (b)Aligned dimensioning (c)Ordinate dimensioning (d)Linear dimensioning 24.Hatching lines are drawn to show (a)Section of an object (b)Front view of an object (c)Dimensioning of an object (d)Curvature of an object 25.Local section is drawn to show (a)Small object (b) Very long object (c)Alternative view (d)None of these 26.The included angle of a B.S.W thread is (a)540 (b)500 (c)550 (d)600 27.Which one has the lowest least count (a)Steel rule (b)Micrometer (c)Vernier calipers (d)Bevel protractor 28.Diameter of a cylinder can be measured by (a)Bevel protractor (b) Set Square (c)Vernier caliper (d)Micrometer 29.Hand files are made of (a)High carbon steel (b)Cast iron (c)Mild steel (d)Wrought iron 30.Half section is used for (a)Non‐symmetrical object (b)Additional view of an object (c)Only symmetrical object (d)Long rolled piece 31.Standard pitch of M6 thread is……….. (a)0.5mm (b)1.0mm (c)1.25mm (d)1.5mm 32.Countersunk rivet 900 head diameter is (a)1.5d (b)2d (c)2.5d (d)0.8d 33.Quick return mechanism is used in (a)Lathe m/c (b)Milling m/c (c)Drill m/c (d)Shaping m/c 34.A key represent (a)Circular motion (b)Reciprocating motion (c)Relative motion (d)Angular motion 35.The least count of a vernier height gauge in the metric system is (a)0.05mm (b)0.1mm (c)0.02mm (d)0.001mm 36.The function of filler rod in gas welding is (a)To increase the stren gth of the joint (b)To obtain proper size weld and to add additional element (c)To increase the flutdity (d)To obtain penetration 36.Heating the metal to plastic stage and shape by hammering (a)Forging (b) Moulding (c)Joining (d) Welding 37.Which is not a part of a screw jack (a) Body (b) Nut ( c) Swivel cup (d) Coupling 38. Which one of the following indicates the Ra value (a)0.0001mm (b)0.00001mm (c) 0. 000001mm (d)0.0000001mm 39.The method of machining operation in which the work piece is reduced to cylindrical or required length is called…………………….. operation (a)Taper turning (b) Plane turning (c) Facing (d) knurling 40.Reaming is the process of (a)Enlarging a drilled hole (b) Finishing the drilled hole (c)Operation done on lathe (d)Operating after facing 41.Which among the following is the desired property of milling cutter (a)Hardness (b)Toughness (c)Resistance to wear (d)All of these 42. The minimum measurement that can be correctly read with vernier caliper is called (a)Actual reading minus zero error (b)Least cont (c)Main scale reading (d)Zero reading 43.Which of the following is not the correct method of expressing a fit under BIS system of the limits and fits (a)45H8/g7 (b)45g7/H8 (c)45H8‐g7 (d)45H8/P7 44.Journal bearing can only support (a)Axial load (b) Radial load (c)Inclined load (d) None of these 45.Surface roughness is indicated by (a)Ra (b)Rt (c)Rr (d)Sr 46. Rivet is a fastening method by which joined are (a)Permanent (b)Semi –permanent (c)Temporary (d) None of these 47.The diameter of rivet for 20 mm thick plate would be (a)10mm (b)15mm (c)30mm (d)40mm 48. A collar thrust bearings can only support (a)Vertical shaft (b)Horizontal shaft (c)Inclined shaft 49.Plummer block is a (a)Built type journal bearing (b)Split type of journal bearing (c)Simple journal bearing (d) None of these 50.Foot‐step bearing is used for supporting the lower end of (a)Horizontal shaft (b)Vertical shaft (c)Inclined shaft (d)Both ‘a’ and ‘b’ 51.In a bearing rotation of brasses is prevented by (a)Providing snug (b)Providing lugs (c)Providing rectangular steps (d)All of the above 52.Letters and numerals are designed by (d) None of these (a) Width (b) Height (c ) both ‘a’ and ‘b’ (d) none of these 53.As per BIS the size of title block is (a)195 x65mm (b)185 x 65mm (c)205 x 65mm (d)210 x 60mm 54.For locating a portion of a drawing the sheet is divided into a number of ……………………. (a)Zones (b) Revision panel (c)Folding mark (d)None of these 55.The drawing sheet is so folded that the title block is (a)Always on the bottom (b)Always on the top (c)Always on the side (d)None of these 56.When an angle is more than 1800 and less than 3600 is called (a)Obtuse angle (b)Right angle (c)Reflex angle (d)Straight angle (c)Hexahedron (d)Solids of revolution 57.Solid having six regular surfaces is called (a)Tetrahedron (b)Octahedron 58.The arc is any part of the circumference of a………………………. (a)Circle (b)Polygon (c)Quadrilateral (d)None of these 59. If two sides of a right angle triangle are 3 and 4, then the length of the third side is (a)4 (b)5 (c)10 (d)15 60.The eccentricity is always ………………………….than one for an ellipse (a)Equal to (b)Greater than (c)Less than (d)None of these 61.It is the line perpendicular to the directrix and passing through focus (a)Ordinate (b)Vertex (c)Latus rectum (d)Axis 62.Long breaks are shown by (a)Continuous thin line (b)Continuous thick line (c)Chain thin line (d)Continuous thin line with zig‐zag 63.Usually the section lines are drawn at………………..degree to the horizontal (a)30 (b)60 (c)75 64.Which way of presentation is correct (d)45 (a)30R (b)R30 (c)R=30 (d)30r 65.As far as possible dimensions should be given in …………………….unit only (a)Three (b)Two (c)One (d)None of these 66.The tolerance system consists of ………………………number of tolerance and ………………………number of grades of fit respectively. (a)7,5 (b)8,20 (c)12,16 (d)16,21 67.Surface roughness of a object on a drawing is represented as (a)Circles (b)Squares (c)Triangles (d)Rectangles 68.It is possible to show all the three dimensions in on one view in this projection (a)Perspective (b)1st angle (c)Pictorial (d)3rd angle 69.The projection obtained on a HP of a cut object is called sectional (a)Top view (b)Side view (c)Front view (d)None of these 70.The measurement are required in three units………….scale is used (a)plain (b)Vernier (c )scale of chords (d) diagonal 71.Vernier scale are to read (a)angles (b)very small units (c) two units (d)none of these 72.One cubic centimeters =……………….cubic mm (a)10 (b)100 (c )1000 (d)10000 73.For drawing a small instruments e.g watch parts….scale is used (a)enlarging scale (b)reducing (c)full size (d)none of these 74.1.5 is same as …………………cm to meter (a)10 (b)20 (c) 30 (d)40 75.The horizontal lines are drawn from (a)left to right (b)right to left (c) up to down (d) down to up 76.Sectional views reveal (a)external details (b) internal details (c ) length & height of object (d) none of these 77. The intersection between a solid body and a straight line is a (a) Line (b)Circle (c ) Point (d) none of these 78.The ratio between the isometric and true length is (a)2/√3 (b) √2/3 (c ) √2/√3 (d)2/3 79. The angle between the isometric axis is (a)90 ° (b)120° (c)60° (d)80° 80.In isometric projection are represented as ellipse of the object in (a)all faces (b)only the front face (c) only the top face (d) none of these 81.An isometric projection is pictorial drawing of (a)three views (b)two views (c) one views (d) none of these 82.Isometric projection can not be drawn by (a) box method (b)co‐ordinate method (c) zone method (d)off‐set method 83.What percentage of true scale is the isometric scale (a)18% (b)30% (c)82% (d)100% 84.The imaginary vertical plane placing through the observer’s eye is called as (a)ground plane (b)horizon plane (c) central plane (d) picture plane 85. In orthographic projection which object in one view is sufficient (a)Cone (b)cylinder (c)Sphere (d)all of these 86. In first angle projection left side view is placed …side of the front view (a) Left (b) right (c) top (d)bottom 87. Top view of an object placed above the…..plane (a) horizontal (b)Vertical (c) profile (d) none of these 88.True section is obtained when the plane ………….to the section plane (a) perpendicular (b)parallel (c) inclined 89. The sectional surfaces are indicated by ………..lines (d) both ’a’ & ‘b’ (a)horizontal lines (b) vertical lines (c) inclined lines (d) section line 90. Third angle projection is a…………………..projection (a)perspective (b)orthographic (c )oblique (d)axonometric 91.Cvalier is a …..projection (a) (a)perspective (b)orthographic (c )oblique (d)axonometric 92.In isometric projection dimension lines are drawn parallel to (a)isometric line (b)isometric axis (c) both ‘a’ & ‘b’ (d) none of these 93.A circle in isometric projection appears as a…….. (a) circle (b)sphere (c)ellipse (d)none of these 94.Which is not a cause of accident (a)careless (b)over confidence (c) good knowledge of work (d)over working 95.To remove a particular spot on drawing ……………is used (a)French curve (b)Circle templates (c) erasing shield (d)none of these 96.Cutting angle of twist drill is (a)115° (b)118° (c)180° (d)none of these 97. Correct sequence of strokes in a four stroke engine is (a)compression, suction, power, exhaust (b)Suction, compression, power, exhaust (c)Suction, compression, Exhaust, power (d)None of these 98.15 micron is equal to……………………mm (a)0.025 (b)0.015 (c)0.035 (d)0.15 99.Symbol ‘ø’ indicates the (a)Radius of hole (b)Radius of arc (c)Diameter of hole (d)None of these 100.By projecting visual ray method we can make a perspective drawing by projecting from the plan and elevation, it has (a)One varnishing point (b)Two varnishing point (c)Three varnishing point (d)No varnishing point `