ITI Machinist Exam Questions on Gauges - Set 02 - ObjectiveBooks

ITI Machinist Exam Questions on Gauges - Set 02

Practice Test: Question Set - 02

1. A sine bar is made with four or five equally-spaced holes on its body. The purpose of these holes is to
    (A) Handle the sine bar easily
    (B) Reduce the weight of sine bar
    (C) Prevent distortion of the top surface
    (D) Give good appearance to the sine bar

2. Which of the following gauge is used to check the threading tool of lathe for accuracy on the 60° angle?
    (A) Screw pitch gauge
    (B) Thread plug gauge
    (C) Centre gauge
    (D) Thread ring gauge

3. Which one of the following instrument is used for checking large internal diameters?
    (A) Small hole gauge
    (B) Telescopic gauge
    (C) Plug gauge
    (D) Snap gauge

4. Thread ring gauge is used for checking
    (A) External threads
    (B) Internal threads
    (C) External diameter of cylindrical jobs
    (D) Internal diameter of jobs

5. Before wringing, the mating surfaces of slip gauges should be wiped clean with
    (A) Soft linen cloth
    (B) Chamois leather
    (C) Either "Soft linen cloth" or " Chamois leather"
    (D) Neither "Soft linen cloth" nor " Chamois leather"

6. A taper ring gauge is used for checking
    (A) External taper
    (B) Internal taper
    (C) External threads
    (D) Internal threads

7. Centre gauge is used for
    (A) Setting the lathe tool at correct centre height
    (B) Checking the pitch of the thread
    (C) Checking the fit of thread
    (D) Checking the profile of thread

8. Fixed type snap gauges have 'Go' and 'No Go' ends
    (A) On both sides
    (B) On either side
    (C) On the same side
    (D) Separately

9. The accuracy of reference gauge is
    (A) 0.05 mm
    (B) 0.01 mm
    (C) 0.001 mm
    (D) 0.0001 mm

10. In a taper plug gauge the 'Go' and 'No Go' sizes are denoted by a step on
    (A) The same side
    (B) Either side
    (C) Both sides
    (D) Separately

11. In an adjustable snap gauge, two adjustable jaws are provided on
    (A) Both sides
    (B) One side
    (C) One in each side
    (D) None of the above

12. Taper plug gauge is used for checking
    (A) Taper holes
    (B) External taper of cylindrical jobs
    (C) Minor diameter of internal threads
    (D) Diameter of straight holes

13. 'Go' and 'No Go' sizes of 25H7 snap gauge should be
    (A) 24.958 mm (Go) and 25.023 mm (No Go)
    (B) 25.023 mm (Go) and 24.958 mm (No Go)
    (C) 24.977 mm (Go) and 25.042 mm (No Go)
    (D) 25.042mm (Go) and 24.977 mm (No Go)

14. For general use in workshop, slip gauges of which grade are used?
    (A) Grade - 0
    (B) Grade - 1
    (C) Grade - 2
    (D) None of the above

15. One of the precision instruments used to check the dimensional accuracy of an external 'V' thread, is a screw thread micrometer. Which one of the following elements of a screw thread is checked with screw thread micrometer?
    (A) Major diameter
    (B) Minor diameter
    (C) Pitch diameter
    (D) Pitch

16. Grade -I slip gauges are used in
    (A) Workshop by operator
    (B) Inspection room
    (C) Either 'A' or 'B'
    (D) Neither 'A' nor 'B'

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