ITI Fitter Theory 3rd Semester Exam Papers

1. The abrasive used for honing non-ferrous metals is ………. • Boron Carbide
• Diamond
• Silicon Carbide
• Aluminum Oxide
Answer: Silicon Carbide

2. Tempering is a process by which ………. is removed.
• Property of brittleness
• Property of malleability
• Property of toughness
• Property of ductility
Answer: Property of brittleness

3. The type of thread used in precision instruments is………….
• BSW Thread
• Acme Thread
• Square Thread
• BA Thread
Answer: BA Thread

4. Should the first aid box be properly stocked and where should it be kept?
• At a strategic location
• In the machining area
• At an easily accessible location
• In the correct position
Answer: At an easily accessible location

5. The basic function of cutting fluid is………….
• Cleaning and lubrication
• Providing chip removal and lubrication
• Cooling the tool and workpiece
• Cooling chips and moving them away from the cutting area
Answer: Cooling the tool and workpiece

6. Sine bar is specified by?
• Its total length
• Center distance between two rollers
• Size of rollers
• Distance between rollers and top surface
Answer: Center distance between two rollers

7. Which of the following is used to measure a gap?
• Taper Plug Gauge
• Slip Gauge
• Taper Ring Gauge
• Thread Gauge
Answer: Slip Gauge

8. Where among the following are irregularly shaped work pieces clamped on a lathe machine?
• On face plate
• On four jaw chuck
• On collet chuck
• On mandrel
Answer: On face plate

9. Which one of the following methods of catching the thread is used for cutting metric threads on a British lathe?
• Using the chasing dial method
• By reversing the machine
• By moving the carriage through a predetermined travel on the lathe bed
• By marking reference lines on the head stock as well as on the lead screw
Answer: By reversing the machine

10. Which of the following is used to check an external taper?
• Taper Plug Gauge
• Taper Ring Gauge
• Slip Gauge
• Thread Gauge
Answer: Taper Ring Gauge

11. Slip gauge named ‘Grade’ is used for what?
• Workshop
• Inspection
• Calibration
• Reference
Answer: Inspection

12. While normalizing, the component is cooled by?
• By submerging in water
• In still air, at room temperature
• By strong air
• By soaking in oil
Answer: In still air, at room temperature

13. Which of the following types of nut prevents the upper nut from rotating?
• Sawn Nut
• Grooved Nut
• Self-Locking Nut
• Lock Nut
Answer: Lock Nut

14. The name of the material generally used in thick-walled bearing bushes carrying hardened steel shafts is.
• Phosphor Bronze
• Brass
• Aluminum
• Copper
Answer: Phosphor Bronze

15. On what is work with finished holes applied?
• Face Plate
• Collet Chuck
• Mandrel
• Four Jaw Chuck
Answer: Mandrel

16. The purpose of the grooves given on the lapping plate is……
• Reducing friction
• Retaining lapping paste
• Collecting metal chips
• Preventing deposition on the plate
Answer: Retaining lapping paste

17. The tool used to enlarge a drilled hole is called ………
• Boring Tool
• Facing Tool
• Form Tool
• Reaming Tool
Answer: Boring Tool

18. The number of threads per inch can be checked by which of the following?
• Tool Gauge
• Metric Rule
• Ring Gauge
• Screw Pitch Gauge
Answer: Screw Pitch Gauge

19. To prevent damage to the guide ways of the lathe while installing the chuck…
• Lift the chuck with a hand crane
• Ask an instructor to help
• Place a wooden block or board on top of the guide ways
• Use a screw jack for support
Answer: Place a wooden block or board on top of the guide ways

20. The benefits of the 5S system are ………
• Improve cleaning
• Improve productivity
• Reduce production rate
• Maintain production rate
Answer: Improve productivity

21. What determines file grades?
• Distance from heel tip
• Tooth spacing
• File cut
• File size
Answer: Tooth spacing

22. In the series of letter drills, size of drill A is equal to:
• 0.413”
• 0.431”
• 0.264”
• 0.234”
Answer: 0.234”

23. While turning a workpiece on a lathe, in which of the following operations will the spindle speed be minimum?
• Parting off
• Thread cutting
• Finishing
• Taper turning
Answer: Thread cutting

24. In which of the following types of nuts, a round ring of nylon or fibre is found placed inside the upper part of the nut?
• Self-Locking Nut
• Wire Lock
• Sawn Nut
• Grooved Nut
Answer: Self-Locking Nut

25. How many grades of slip gauges are recommended by BIS – IS: 2984?
• 2
• 3
• 4
• 5
Answer: 4

26. Steady Rest is ………
• Additional support provided for long jobs
• Used while turning asymmetrical objects
• Used only in thread cutting
• Used when there is vibration in the lathe
Answer: Additional support provided for long jobs

27. Form tool method of taper turning is suitable for which of the following?
• For long jobs with slow tapers
• For jobs of any length
• For short jobs at any angle
• For small jobs at any angle
Answer: For short jobs at any angle

28. By what name is the three-jaw chuck also known?
• Self-setting chuck
• Self-centering chuck
• Automatic chuck
• Union chuck
Answer: Self-centering chuck

29. The power transmitted to the carriage by the lead screw is sent through:
• Gear System
• Pulley Drive
• Rack and Pinion Arrangement
• Half Nut
Answer: Half Nut

30. The largest diameter of a thread is known as……….
• Minor diameter
• Normal diameter
• Major diameter
• Pitch diameter
Answer: Major diameter

31. Where sliding forces act in one direction, the form of threads used is ………
• V Thread
• Square Thread
• Trapezoidal Thread
• Saw Tooth Thread
Answer: Saw Tooth Thread

32. Which type of bearing is for carrying radial load?
• Ball Bearing
• Thrust Ball Bearing
• Roller Bearing
• Tapered Roller-Bearing
Answer: Roller Bearing

33. The main purpose of annealing is……….
• Increasing hardness
• Increasing toughness
• Improving machinability
• Eliminating voids
Answer: Improving machinability

34. The hardest cutting tool material is…….
• High-Speed Steel
• Cemented Carbide
• Diamond
• Stellite
Answer: Diamond

35. In the series of number drills, the size of number 80 drill is……
• 0.1035”
• 0.0135”
• 0.228”
• 0.258”
Answer: 0.0135”

36. In which of the following gauges, GO and NOGO come at the same end?
• Double ended plug gauges
• Snap gauges
• Progressive gauges
• Depth gauges
Answer: Progressive gauges

37. Sine bar is made of……
• Nickel steel
• High-speed steel
• High carbon steel
• Stabilized chromium steel
Answer: Nickel steel

38. The part of the lathe used to hold the drill is…….
• Tool post
• Tailstock
• Headstock
• Spindle
Answer: Tailstock

39. A taper has important dimensions.
• Large diameter and length of taper
• Large diameter, small diameter, and length of taper
• A diameter and length of taper
• Large diameter and small diameter of taper
Answer: Large diameter, small diameter, and length of taper