ITI Machinist 2nd Semester Exam Papers : The diploma course in Machinist Theory is of 1 year which has 2 semesters. So in today’s post, you have been given the paper of the second semester and it contains very important questions which have been asked many times in the exam. So, these questions are very important for all the students preparing for the Machinist Theory exam. Solve them carefully tomorrow and make your exam preparation better.
ITI Mechanic Motor Vehicle 2nd Semester Exam Papers
ITI Machinist 2nd Semester Exam Papers
1. Which of the following machines is recommended for pre-marked contours?
•Shaper
•Lathe
•Drilling Machine
•Planer
Answer. Planer
2. What is lathe bed made of?
•Mild steel
•Cast iron
•Stainless steel
•Low carbon steel
Answer: Cast iron
3. What is the suitable method for turning internal tapers?
•By a form tool
•By setting over the tailstock
•By a taper turning attachment
•By swivelling the compound rest
Answer. By a taper turning attachment
4. The pitch of a triple start shred is 8 mm. Then its lead is?
• 8 mm.
• 16 mm.
• 4 mm.
• 24 mm.
Answer. 24 mm.
5. Centerless grinding method used for manufacturing taper is?
•In feed grinding
•Feed grinding
•End feed grinding
•All of the above
Answer. End feed grinding
6. The bed overhanging diameter is the ……….. of the centre height measured from the bed of the lathe.
•Equal
•Double
•Triple
•Half
Answer. Double
7. Which of the following work holding devices is preferred for holding small objects for a planer?
•Vice
•V-block
•Stop
•Brace
Answer. Vice
8. Grinding of long, cylindrical shafts is done?
•By in feed grinding
•By end feed grinding
•By through feed grinding
•None of these
Answer. By through feed grinding
9. What moves around during machining in a planer?
•Workpiece
•Planer
•Both workpiece and planer
•Neither planer nor workpiece
Answer. Workpiece
10. What is the function of dividing or indexing head?
•Dividing the circumference of the workpiece into desired equal parts
•Holding the object in vertical position
•Holding the object in horizontal position
•All of the above
Answer. Dividing the circumference of the workpiece into desired equal parts
11. Mr. Joe Chuck is also known as………
•Independent chuck
•Compound chuck
•Universal chuck
•None of these
Answer. Universal chuck
12. Precision of Vernier Height Gauge in Metric System
•0.0002 mm.
•0.02 mm.
•0.1 mm.
•1 mm
Answer. 0.02 mm.
13. The process in which cut particles of the workpiece stick to the openings of the grinding wheel is known as?
•Wheel trimming
•Wheel sizing
•Wheel loading
•All of the above
Answer. Wheel loading
14. Slow speed of spindle is necessary during ………?
•Facing operations of small items
•Turning operations of small items
•Shred cutting
•All of the above
Answer: Shred cutting
15. In centerless grinding process, the workpiece center will be?
•Below the centers of both the wheels
•Above the centers of both the wheels
•On the line joining the two wheels
•None of these
Answer. Above the centers of both the wheels
16. What is the number of spindles for Column and Knee type milling machine?
•One
•Two
•Three
•Four
Answer. One
17. Shredding is used for which of the following?
•For smoothing and squaring
•For sizing and finishing
•For making spiral grooves
•For making holes
Answer. For making spiral grooves
18. Which of the following is an indexing method?
•Compound indexing
•Direct-indexing
•Differential indexing
•All of the above
Answer. All of the above
19. Which of the following is used to lock the leadscrew with the lathe carriage for shred cutting?
•Chuck
•Face plate
•Spindle
•Half nut
Answer. Half nut
20. The lead screw of the lathe has?
•Single start
•Double start
•Triple start
•Any of these
Answer. Single start
21. In a planer, horizontal feed to the tool is given by?
•By moving the tool head inclined towards the cross rail
•By moving the tool head perpendicular to the cross rail
•By moving the tool head along the cross rail
•All of the above
Answer. By moving the tool head along the cross rail
22. In a spur gear, the width of a tooth measured on the pitch circle is called?
•Tooth depth
•Tooth width
•Tooth thickness
•All of the above
Answer. Tooth thickness
23. The top and sides of the shaper table usually have ………
•L type slot
•T type slot
•U type slot
•I type slot
Answer. I type slot
24. What is the specific function of semi-centre?
•Shred cutting
•Drilling
•Reaming
•Facing
Answer. Facing
25. Bevel protractors are used for………
•For the height of the workpiece
•For the length of the workpiece
•For the angle between two surfaces
•For the depth of the workpiece
Answer. For the angle between two surfaces
26. Standard tapers provided with lathe centres are called?
•Seller taper
•Chapman taper
•Morse taper
•Brownian taper
Answer. Morse taper
27. Is it plane or slab milling work?
•Creating vertical surfaces perpendicular to the axis of the cutter
•Creating horizontal surfaces parallel to the axis of the cutter
•Creating inclined surfaces inclined to the axis of the cutter
•All of the above
Answer. Creating horizontal surfaces parallel to the axis of the cutter
28. If the major diameter D is 40 mm and the minor diameter d is 20 mm, then the depth of the grade is?
• 10 mm.
• 15 mm.
• 5 mm.
•12 mm
Answer. 10 mm.
29. The size of lathe is known by……..
•Distance between centres
•Bed hanging diameter
•Carriage hanging diameter
•All of the above
Answer. All of the above
30. Open structure wheels are generally recommended for……..?
•For rough grinding and soft materials
•For hard and brittle materials
•For precision grinding and hard materials
•All of the above
Answer. For rough grinding and soft materials
31. Which of the following is not a precaution to be taken while grinding?
•The grinding wheel should never be operated at a speed higher than the prescribed speed
. •Never adjust the workpiece or work mounting device while the machine is running.
•The depth of cut should never exceed the prescribed depth for the grinding wheel or machine.
•None of these
Answer: None of these
32. Which of the following parts serves as a shelter for the gear rail through which power feed is provided to the carriage and cross slide?
•Tool post
•Apron
•Chuck
•Saddle
Answer. Apron
33. The process in which the condition of the abrasive becomes unworkable and it stops working is known as?
•Wheel glazing
•Wheel loading
•Wheel breaking
•None of these
Answer. Wheel glazing
34. During down milling the workpiece and the milling cutter move in………….
•In the opposite direction
•In the same direction
•In both opposite and same directions
•None of these
Answer. In the same direction
35. Live centre moves along with………
•Head stock
•Tail stock
•Carriage
•Cross slide
Answer. Head stock
36. In the work of chamfering
•The end of the surface is sloped
•Diamond shaped carving is done on the work piece
•Diameter of the work piece is reduced
•Cylindrical hole is enlarged
Answer. The end of the surface is sloped
37. Which of the following is adjusted vertically to accommodate different heights of objects?
•Base
•RAM
•Axle
•Cross rail
Answer. Cross rail
38. Surface grinding is done to make…………?
•Tapered surface
•Flat surface
•Internal cylindrical hole
•All of the above
Answer: Flat surface
39. In up milling or conventional milling
•The cutter rotates at an angle to the direction of work feed
•The cutter rotates perpendicular to the direction of work feed
•The cutter rotates opposite to the direction of work feed
•None of these
Answer. The cutter rotates opposite to the direction of work feed
40. Will differential indexing be done?
•In one step
•In two steps
•In three steps
•In four steps
Answer. In two steps
41. Are there guide ways?
•Flat type
•V-type
•Dovetail type
•All of the above
Answer. All of the above
42. The driver mechanism of a planer includes?
•Cam and follower drive
•Rope drive
•Direct reversible drive
•None of these
Answer. Direct reversible drive
43. Silicon carbide is?
•Natural Abrasives
•Artificial Abrasives
•Semi Natural Abrasives
•Semi Artificial Abrasives
Answer. Synthetic abrasives
44. The requirement of abrasive grain size in a grinding wheel depends on the following?
•The amount of material to be removed
•The hardness of the material to be grinded
•The desired finish
•The diameter of the workpiece
Answer. The amount of material to be removed
45. The chuck used to hold heavy and irregular shaped workpieces is?
•Drill chuck
•Four jaw independent chuck
•Shri jaw chuck
•Magnetic chuck
Answer. Four jaw independent chuck
46. For grinding soft materials
•Coarse grained grinding wheel is used
•Fine grained grinding wheel is used
•Medium grained grinding wheel is used
•None of these
Answer. Coarse grained grinding wheel is used
47. The type of milling in which multiple surfaces are produced at the same time is called?
•Form milling
•Side milling
•Face milling
•Gang milling
Answer. Gang milling
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