Every year, ITI conducts recruitment for Turner Theory, for which thousands of candidates apply and take the exam. However, not all candidates pass this exam due to the high number of examinees and the limited number of positions available. Therefore, any candidate preparing for this exam should prepare thoroughly for ITI Turner Theory to easily pass it. For candidates preparing for this exam, an online mock test is provided in this post, which you can solve to improve your preparation.
1. What is the point called where changes begin when heating steel?
• Heat absorption point
• Lower critical point
• Upper critical point
• Reheating point
Answer: Lower critical point
2. How is bearing clearance checked?
• Vernier caliper
• Bore gauge
• Inside micrometer
• Filler gauge
Answer: Filler gauge
3. What type of file is selected for filing aluminum jobs?
• Single-cut file
• Second-cut file
• Bastard-cut file
• Rasp file
Answer: Rasp file
4. Which center is used when cutting taper by the set-over method?
• Plain center
• Half center
• Ball center
• Revolving center
Answer: Ball center
5. Twisting the rope is called?
• Bite
• Whipping
• Loop
• Crowning
Answer: Bite
6. What is the composition of brass metal?
• Copper and zinc
• Copper and tin
• Zinc and tin
• Copper and silver
Answer: Copper and zinc
7. Which saw is used for fine work like tenons?
• Tenon saw
• Coping saw
• Fret saw
• Compass saw
Answer: Tenon saw
8. The fuel for Class ‘A’ type fire is:
• Gas and liquefied gas
• Flammable liquid and liquefied solid
• Wood, cloth, paper
• Electrical equipment fire and metal fire
Answer: Wood, cloth, paper
9. If the wrapping angle and contact area of the belt with the pulley are low, what will be the effect?
• Less torque will be transmitted
• More torque will be transmitted
• Both of the above
• None of these
Answer: Both of the above
10. The recommended depth of cut for rough grinding is:
• 0.010 mm to 0.020 mm
• 0.015 mm to 0.030 mm
• 0.015 mm to 0.050 mm
• 0.020 mm to 0.040 mm
Answer: 0.015 mm to 0.030 mm
11. This is called a self-centering chuck?
• Four-jaw chuck
• Collet chuck
• Magnet chuck
• Three-jaw chuck
Answer: Three-jaw chuck
12. What is the setup called that holds the job firmly and guides the tool during drilling?
• Jig
• Clamp
• Device
• Bush
Answer: Jig
13. Which abrasive is used for lapping non-ferrous metals?
• Aluminum oxide
• Silicon carbide
• Diamond
• Boron carbide
Answer: Aluminum oxide
14. For face copying, what type of template is required?
• Cylindrical
• Plate type
• Flat
• Triangular
Answer: Triangular
15. Morse taper is an internationally accepted standard taper. Morse taper is available in the following numbers:
• 0 to 7
• 0 to 8
• 1 to 7
• 1 to 8
Answer: 0 to 7
16. A continuous extrusion process is demonstrated in?
• Drop forging
• Machine forging
• Press forging
• Round forging
Answer: Drop forging
17. In which type of milling machine is the milling cutter mounted on the spindle?
• Vertical milling machine
• Horizontal milling machine
• Plano-miller
• None of these
Answer: Vertical milling machine
18. The taper in the thickness of the taper ‘key’ is in the ratio of?
• 1:100
• 1:50
• 1:10
• 1:1000
Answer: 1:100
19. The special feature of the N.C. machine is:
• Each step of the program is marked in numbers
• Setting the machine takes much longer than mechanical control
• Cutting speed is much higher compared to manually controlled machines
• Workshop production sequence is stored in blocks or series of numbers
Answer: Workshop production sequence is stored in blocks or series of numbers
20. Sandstone, corundum, and diamond are:
• Natural abrasives
• Synthetic abrasives
• Binder materials
• None of the above
Answer: Natural abrasives
21. Which of the following is a benefit of a pneumatic system?
• Increased production rate
• Low layout cost
• Good working environment
• All of the above
Answer: All of the above
22. High-speed steel lathe tools operate safely at:
• 800°C
• 700°C
• 600°C
• 900°C
Answer: 600°C
23. The upper critical temperature for steel is:
• Depends on the heating rate
• Depends on the cooling rate
• Constant
• Varies according to the carbon content in the steel
Answer: Varies according to the carbon content in the steel
24. Which of the following is not a benefit of friction in our daily lives?
• Power transmission by belt occurs due to friction
• Friction affects the accuracy of machines
• Ball bearings and roller bearings rotate due to friction
• We can walk on the ground due to friction
Answer: Friction affects the accuracy of machines
25. A non-return valve is used for water flow in which of the following ways?
• Two-way flow
• Three-way flow
• One-way flow
• Four-way flow
Answer: One-way flow
26. The pitch diameter of a screw thread is checked with:
• Snap gauge
• Thread ring gauge
• Screw thread micrometer
• Vernier caliper
Answer: Screw thread micrometer
27. Which of the following is not a benefit of interchangeability?
• Need to adopt trial and error method
• Available in the spare market
• Lower cost of the part
• Increased production
Answer: Need to adopt trial and error method
28. The angle between lathe centers is:
• 15°
• 30°
• 45°
• 60°
Answer: 60°
29. The symbols V, S, B, R & E represent:
• Grade of grinding wheel
• Bond material
• Silicon carbide
• Grit size
Answer: Bond material
30. Which type of hammer is used to form the top of a key by spreading the key?
• Mallet hammer
• Claw hammer
• Ball peen hammer
• Straight peen hammer
Answer: Ball peen hammer
31. What is the main purpose of normalization?
• Increase brittleness
• Increase hardness
• Reduce coarse grain structure
• Increase strength
Answer: Reduce coarse grain structure
32. Hard grade wheels are used for grinding which type of metals?
• Hard
• Soft
• Normal
• All of these
Answer: Soft
33. Which of the following is used to draw a parallel line to the end of a part?
• Vernier caliper
• Screw gauge
• Divider
• Hermaphrodite caliper
Answer: Hermaphrodite caliper
34. Permanent joints in mild steel blocks are achieved by:
• Bolts and nuts
• Welding
• Cooling
• Boiling
Answer: Welding
35. The number of bolts in a flange coupling for a 100 mm diameter shaft is:
• 2
• 4
• 8
• 10
Answer: 4
36. Which of the following is the objective of heat treatment?
• Reduce heat degradation resistance
• Reduce hardness and tensile strength
• Increase hardness and reduce tensile strength
• Increase hardness and tensile strength
Answer: Increase hardness and tensile strength
37. Which device is used in turning, shaping, and milling operations?
• Vice
• Fixture
• Clamp
• Any of the above
Answer: Fixture
38. Which type of template is used to copy a shaft?
• Square
• Triangular
• Flat
• Cylindrical
Answer: Cylindrical
39. Which tool is used to align the job concentrically with the machine spindle?
• Try square
• Scriber
• Bevel protractor
• Surface gauge
Answer: Surface gauge
40. The correct sequence of operations to create a very fine hole is?
• Drilling – Tapping – Honing
• Drilling – Reaming – Honing
• Honing – Drilling – Reaming
• Drilling – Lapping – Honing
Answer: Drilling – Reaming – Honing
41. Which index plate is required to index an angle of 19°40′?
• Plate
• Plate-II
• Plate-III
• None of these
Answer: Plate-II
42. Excess material can be removed from a workpiece using:
• Heat
• Driller
• File
• None of the above
Answer: File
43. In the hole basis system, limits and fits are:
• Hole size changes and shaft size remains constant
• Hole size remains constant and shaft size changes
• There is no such thing as a hole basis system
• None of the above
Answer: Hole size remains constant and shaft size changes
44. Which of the following is a non-ferrous metal?
• Mild steel
• Cast iron
• High carbon steel
• Brass
Answer: Brass
45. A split pin is used to lock which type of nut?
• Grooved nut
• Lock nut
• Swan nut
• Castle nut
Answer: Castle nut
46. Hard die
steel is generally used for making?
• Measuring tools
• File
• Drill bits
• Screwdrivers
Answer: Measuring tools
47. An 8 mm wide and 2 mm deep keyway is required for:
• 16 mm shaft
• 18 mm shaft
• 20 mm shaft
• 22 mm shaft
Answer: 18 mm shaft
48. Which coolant is used to cut copper?
• Boric acid
• Leaded petrol
• Kerosene
• None of the above
Answer: Kerosene
49. The thread angle of the British Association (BA) screw is:
• 55°
• 60°
• 47.5°
• 45°
Answer: 47.5°
50. The purpose of annealing is to:
• Increase tensile strength
• Increase brittleness
• Increase ductility
• Increase hardness
Answer: Increase ductility
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