ITI Mechanic Instructor Recruitment Exam Questions with Answer
1. The instrument used for drawing curved lines other than constant radius arcs are called :
(A) Compass (B) Protractor
(C) French curves (D) Pro circle
2. The trimmed size of the sheet designation A2 is ——————— mm.
(A) 841 × 1189 (B) 420 × 594
(C) 594 × 841 (D) 450 × 625
3. In unidirectional system the dimensions are placed :
(A) Left side of the dimension fine
(B) Above the dimension lines
(C) Below the dimension lines
(D) By breaking the dimension line in the middle
4. The representative fraction is 5. The actual length is 20 mm. Find the length of the drawing :
(A) 10 cm (B) 10 mm
(C) 0.1 mm (D) 100 cm
5. The diagonal scales are used when measurements are required in ——————— units.
(A) 1 (B) 2
(C) 3 (D) 4
6. What are the main parts of the Vernier scale?
(A) Vernier scale and secondary scale (B) Primary scale and Vernier scale
(C) Primary scale and secondary scale (D) Plain scale and comparative scale
7. How many pairs of parallel lines are there in regular Hexagon?
(A) 1 (B) 2
(C) 3 (D) 6
8. A line passing through the focus and perpendicular to the directrix is called :
(A) Axis (B) Tangent
(C) Latus rectum (D) Vertex
9. Which of the following is the eccentricity for hyperbola?
(A) 1 (B) 1/2
(C) 2/3 (D) 3/2
10. A Curve generated by a point on the circumference of a circle which rolls without slipping
along a fixed straight line :
(A) Involute (B) Helix
(C) Cycloid (D) Ellipse
11. The front view of a point is 50 mm above the reference line and the top view is 20 mm below
the front view. The point lies in :
(A) First angle (B) Second angle
(C) Third angle (D) Fourth angle
12. When a line is perpendicular to HP and parallel to VP then what figure will be projected on
HP?
(A) Point (B) Inclined line
(C) Square (D) Straight line
13. State the position of a point the front view of which lies on the reference line and the top view
is 40 mm above it :
(A) 40 mm above H.P and in the V.P (B) 40 mm below H.P and in the V.P
(C) 40 mm behind V.P and in the H.P (D) 40 mm in front of V.P and in the H.P
14. If an isometric drawing is made use of isometric scale then the drawings are called :
(A) Isometric projection (B) Isometric view
(C) Isometric perception (D) Orthographic view
15. Which method of development is employed in case of sphere?
(A) Parallel-line development (B) Radial-line development
(C) Triangulation development (D) Approximation method
16. What is the largest diameter of the screw thread?
(A) Core diameter (B) Pitch diameter
(C) Nominal diameter (D) Helical diameter
17. The thread angle of British Standard Witworth (BSW) threads are :
(A) 45° (B) 55°
(C) 30° (D) 60°
18. Screw thread profile adopted by B.I.S.:
(A) Unified thread (B) Buttress thread
(C) Square thread (D) Worm thread
19. A double-threaded screw has a pitch of screw 2 mm. How much the screw advances if it is
made 2 revolutions?
(A) 2 mm (B) 4 mm
(C) 6 mm (D) 8 mm
20. Which thread is denoted by SQ 50 × 10?
(A) Square thread with 50 mm major diameter and 10 mm pitch
(B) Square thread with 10 mm major diameter and 50 mm pitch
(C) Square thread with 10 mm minor diameter and 50 mm pitch
(D) Square thread with 50 mm minor diameter and 10 mm pitch
21. Screwed joints are :
(A) Permanent joints
(B) Temporary joints
(C) Neither permanent nor temporary joint
(D) Both temporary and permanent joints
22. A fastening device having external threads on its both ends is called :
(A) Hexagonal bolt (B) Eye bolt
(C) Square bolt (D) Stud bolt
23. A nut in which slots are cut in a cylindrical collar provided on the top of the nut is called :
(A) Simmond’s locknut (B) Penn nut
(C) Castle nut (D) Sawn nut
24. If the diameter of the rivet is d, then what is the margin?
(A) 0.5 d (B) 1.5 d
(C) 1.0 d (D) 0.3 d
25. According to arrangements of plates, which of the following is not a type of riveted joint?
(A) Single cover plate butt joint (B) Double cover plate butt joint
(C) Lap joint (D) Zigzag joint
26. For a single riveted double strap butt joint, number of rows of rivet is :
(A) Two (B) Three
(C) Four (D) One
180/2023 6 A
27. Drawing showing the position of each part with respect to each other is called :
(A) Assembly drawing (B) Part drawing
(C) Machine drawing (D) Installation drawing
28. Which of the following is not a part of Knuckle joint?
(A) Forked end (B) Taper pin
(C) Eye end (D) Cotter
29. What does the letter “a” indicate in the fillet weld dimensioning?
(A) Cross-section (B) Longitudinal dimension
(C) Throat thickness (D) Leg length
30. What is the angle of deviations provided on elbows and bends in pipe works?
(A) 90°and 45° (B) 30° and 60°
(C) 45°and 60° (D) 20° and 40°
31. The difference between the size of the manufactured product and the corresponding basic
size :
(A) Deviation (B) Actual deviation
(C) Upper deviation (D) Allowance
32. A dimension is stated as 25 ± 0.03 mm in a drawing. What is the tolerance?
(A) 25.03 mm (B) 24.97 mm
(C) 0.03 mm (D) 0.06 mm
33. The tolerance zone of the hole and the shaft overlaps in :
(A) Clearance fit (B) Interference fit
(C) Transition fit (D) Press fit
34. In hole basis system :
(A) The size of the shaft is made constant
(B) The size of the hole is made constant
(C) The permissible tolerance are given on the hole and the shaft
(D) Allowance is given only on the hole
35. According to Indian standards, the total number of tolerance grades are :
(A) 9 (B) 12
(C) 18 (D) 21
36. The predominent direction of tool that makes the surface pattern on the machined surface is
called :
(A) Flaw (B) Lay
(C) Waviness (D) Profile
37. The surface roughness on a drawing is represented by :
(A) Curves (B) Triangles
(C) Square (D) Zig-zag lines
38. Roughness values 0.2 to 0.8 microns is indicated by which symbol?
(A) One triangle (B) Two triangles
(C) Three triangles (D) Approximation
39. Which of the following process give minimum surface roughness?
(A) Lapping (B) Honing
(C) Grinding (D) Burnishing
40. Drawing showing the part of a machine to be manufactured in a shop :
(A) Assembly drawing (B) Part drawing
(C) Machine drawing (D) Shop floor drawing
41. Expansion of UCS is :
(A) Universal Co-ordinate System
(B) Useful Co-ordinate System
(C) User Co-ordinate System
(D) Unit Co-ordinate System
42. Which of the following are draft setting commands?
(i) Snap
(ii) Grid
(iii) Limits
(iv) Ortho
(A) All of the above (B) Only (i) and (ii)
(C) Only (i), (ii) and (iii) (D) Only (i), (ii) and (iv)
43. The function key used for object snap ON/OFF in Auto CAD is :
(A) F2 (B) F3
(C) F4 (D) F5
180/2023 8 A
44. From the following which are the options used for drawing a line?
(i) Absolute co-ordinates option
(ii) Relative co-ordinates option
(iii) Polar co-ordinates option
(A) Only (i) (B) Only (i) and (iii)
(C) Only (i) and (ii) (D) All of the above
45. The maximum number of sides permitted by Auto CAD in drawing a polygon is :
(A) 1304 (B) 1204
(C) 1034 (D) 1024
46. Which are the modifying commands used in Auto CAD?
(i) Copy
(ii) Hatch
(iii) Mirror
(iv) Offset
(A) All of the above (B) Only (i), (ii) and (iii)
(C) Only (i), (iii) and (iv) (D) Only (ii), (iii) and (iv)
47. The command used in Auto CAD to split compound objects like polyline, block is :
(A) Explode (B) Trim
(C) Break (D) Erase
48. The command used to select a viewing direction for three-dimensional view of a drawing
specified by X, Y and Z co-ordinates is :
(A) ISOSNAP (B) VPOINT
(C) ISOPLANE (D) VIEWDIR
49. The command used in Auto CAD to draw a solid by giving a thickness to object is :
(A) EXTRUDE (B) EXPAND
(C) PRESSPULL (D) POLYLINE
50. In Auto CAD text, the command “%%D” is used for representing :
(A) Diameter (B) Degree
(C) Tolerance (D) Draft
ITI Mechanic Instructor Recruitment Exam Questions with Answer- Part 2- Click here
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