ITI Turner Theory Model Paper PDF Download
When you prepare for any exam, it is very important for you to first know the pattern and syllabus of that exam so that you can prepare well for it in the shortest time. For the candidates who are preparing for the Turner Theory exam, a test has been given in this post according to the pattern and syllabus of the ITI Turner Theory exam, by solving which you can make your preparation much better. For all the candidates preparing for ITI Turner Theory, many more model papers have been provided on our website, by solving which they can make their preparation better.
Important questions asked in ITI Turner Theory
1. How can the formation of orange peel be avoided in cold working of metals?
⚪ By using fine fibrous steel
⚪ By repeated softening
⚪ By drawing the strip
⚪ By machining
Answer. By using fine fibrous steel
2. Most of the tool hangs during turning process due to?
⚪ Due to excessive wear of the machine
⚪ Due to excessive heating of the tool
⚪ Its result will depend on chatter
⚪ None of these
Answer. Due to excessive heating of the tool
3. What are the American threads?
⚪ Sailor shred
⚪ Unified shred
⚪ British Standard shred
⚪ None of these
Answer. Sailor shred
4. Which type of gear set is used to convert rotational motion into linear motion and vice versa?
⚪ Bevel gear
⚪ Hypoid gear
⚪ Spur gear
⚪ Rack and pinion
Answer. Rack and pinion
5. Which of the following joints is generally used for pipes carrying water at low pressure?
⚪ Union joint
⚪ Coupler joint
⚪ Expansion joint
⚪ Nipple joint
Answer. Coupler joint
6. What is it called when the abrasive particles of steel wear away faster than the bond?
⚪ Glazing
⚪ Loading
⚪ Dressing
⚪ Mounting
Answer. Glazing
7. For workpieces which have odd shapes and their face jigs need to be located at some distance, then ………… are used for that?
⚪ Angle plate jig
⚪ Table jig
⚪ Indexing jig
⚪ Ring jig
Answer. Table jig
8. For head protection …………… are used?
⚪ hard hats
⚪ helmets
⚪ caps
⚪ Above (a) and (b)
Answer. Above (a) and (b)
9. The other name of cup head bolt is ………….?
⚪ Cheese head bolt
⚪ Cylindrical cup head bolt
⚪ Round head bolt
⚪ None of the above
Answer. Round head bolt
10. The back teeth of a broach
⚪ Do the work of polishing
⚪ Remove minimum metal
⚪ Remove maximum metal
⚪ Remove no metal
Answer. Remove maximum metal
11. In a right angled triangle, the angle between the hypotenuse and the side represents which angle of thread?
⚪ Clearance
⚪ Helix
⚪ Rack
⚪ Follow
Answer. Helix
12. For different sizes of nuts and bolts, which of the following spanners is used?
⚪ Double ended spanner
⚪ Socket spanner
⚪ Box spanner
⚪ Screw wrench
Answer. Double ended spanner
13. In CNC machines, commands are used while starting the operation or at the end of the cycle. Command M03 means:
⚪ Stopping the program
⚪ Completion and re-setof the program
⚪ Completion of the program
⚪ Clockwise rotation of the spindle
Answer. Clockwise rotation of the spindle
14. The structure of a grinding wheel is generally called…….?
⚪ Long and short
⚪ Compact and open
⚪ Brittle and hard
⚪ Shiny and translucent
Answer. Compact and open
15. Which type of shred is present in the spindle of bench vice?
⚪ BSW
⚪ BSF
⚪ Square tread
⚪ Knuckle shred
Answer. Square tread
16. What is the purpose of tempering?
⚪ To decrease ductility
⚪ To increase hardness
⚪ To decrease toughness
⚪ To increase toughness
Answer. To increase toughness
17. Which of the following is used to hold the workpiece and guide the tool?
⚪ Fixture
⚪ Gauge
⚪ Jig
⚪ Housing
Answer. Jig
18. A standard right hand tool holder ……….. is suitable for turning?
⚪ Near tail stock
⚪ For small diameter jobs
⚪ For heavy cutting
⚪ Near head stock
Answer. Near head stock
19. What is the melting point of copper?
⚪ 1050°
⚪ 1000°
⚪ 900°
⚪ 1083°
Answer. 1083°
20. What is a set of gears called?
⚪ Feeder
⚪ Gear train
⚪ Bevel gear
⚪ Spur gear
Answer. Gear train
21. When steel containing more than 0.8% carbon is slowly cooled below its lower critical point, it is formed by?
⚪ Mainly pearlite
⚪ Mainly ferrite
⚪ Ferrite and pearlite
⚪ Pearlite and cementite
Answer. Pearlite and cementite
22. The hardness of a grinding wheel is specified by?
⚪ BHN
⚪ Letter of the alphabet
⚪ LPN
⚪ Search test
Answer. Letter of the alphabet
23. What is the favourite hammer for a fitter?
⚪ Ball peen hammer
⚪ Cross peen hammer
⚪ Berington hammer
⚪ Claw hammer
Answer. Ball peen hammer
24. Which of the following connects two shafts together to transfer rotational motion from one to the other?
⚪ Ball bearing
⚪ Coupling
⚪ Bolt
⚪ Spur gear
Answer. Coupling
25. Function of taper turning process
⚪ Decreasing the diameter of a work piece along its length direction
⚪ Decreasing the diameter by removing material from an axis offset from the axis of the work piece
⚪ Removing material from the end surface of the work piece
⚪ All of the above
Answer. Decreasing the diameter of a work piece along its length direction
26. Types of extinguishers for class fire
⚪ Water filled extinguishers
⚪ Foam or dry powder or CO2
⚪ Special powders
⚪ Halon, carbon dioxide, dry powder and vaporizer liquid (CTC)
Answer. Water filled extinguishers
27. The angle of cross section of knife edge file is?
⚪ 20°
⚪ 40°
⚪ 10°
⚪ 30°
Answer. 30°
28. Why is some width given on the outside of the eye-hole of the hammer?
⚪ To increase the size
⚪ For better grip
⚪ To make it easier to hold the handle
⚪
To widen the handle by hitting a ball in the mouth Answer. To widen the handle by hitting a ball in the mouth
29. Where is box spanner used?
⚪ For multi grip
⚪ In deep places
⚪ In ratchet
⚪ To prevent slip
Answer. In deep places
30. Follower steady is fitted on?
⚪ On lathe carriage
⚪ On tail stock
⚪ On head stock
⚪ On lathe bed
Answer. On lathe carriage
31. Which device is used to hold gear or pulley on lathe?
⚪ Mandril
⚪ Angle plate
⚪ Study
⚪ Feed rod
Answer. Mandril
32. Why is nickel chromium coating applied on metal parts?
⚪ To protect from rust
⚪ To enhance the beauty of polish
⚪ To protect from heat
⚪ Above (a) and (b)
Answer. Above (a) and (b)
33. Soft soldering is done.
⚪ At a temperature of 800°C
⚪ At a temperature less than 450°C
⚪ At a temperature of 500°C
⚪ At a temperature more than 450°C
Answer. At a temperature less than 450°C
34. Selective assembly is characterized by …………..
⚪ It is cheap
⚪ It is produced in large quantities
⚪ There are no spares
⚪ None of the above
Answer. There are no spares
35. Which device is used in drilling and reaming work?
⚪ Jig
⚪ Fixture
⚪ Device
⚪ Bush
Answer. Fixture
36. Compression of stock is a defect which is called ……. Which of the following causes is not related to this defect?
⚪ Stock length being 2 to 24 times more
⚪ Cross section not being heated properly
⚪ Stock not being rotated in a circular manner while upsetting
⚪ Stock length being too short
Answer. Stock length being too short
37. Oil has a fire point.
⚪ The buoyancy of oil due to which it remains on the boring surface even at high pressure
⚪ The special temperature at which oil turns into steam
⚪ The temperature at which oil starts burning
⚪ The temperature at which oil thickens and stops flowing
Answer. The temperature at which oil starts burning
38. CNC machines are not manually operated, they are controlled by….
⚪ Program
⚪ Action
⚪ Cam
⚪ Plug board system
Answer. Program
39. Which of the following gases is not used for carburising?
⚪ Carbon monoxide
⚪ Methane
⚪ LPG
⚪ Propane
Answer. LPG
40. Which fastener is semi-permanent?
⚪ Weeding
⚪ Reventing
⚪ Nut-bolt
⚪ Forging
Answer. Reventing
41. In a band saw………..
⚪ Both ends are fixed
⚪ Endless flexible blade
⚪ One end is fixed
⚪ None of the above
Answer. Endless flexible blade
42. The gears suitable for 17 TPI cutting on 4 TP I lead screw lathe are……………..
⚪ 30, 105
⚪ 20, 85
⚪ 15, 85
⚪ None of these
Answer. 20, 85
43. Dial gauge working principle is based on?
⚪ On inclined plane
⚪ On nut-bolt
⚪ On rack-pinion
⚪ On lever scale
Answer. On rack-pinion
44. The function of DD rest in lathe machine is.
⚪ To protect the long shaft from bending due to cutting force
⚪ To prevent load on lathe centre during turning of long shaft
⚪ To reduce load on cutting tool during turning
⚪ To ensure turning at higher cutting speed
Answer. To protect the long shaft from bending due to cutting force
45. The bed of CNC machine is made in ….. sections.
⚪ Flat
⚪ Rectangular
⚪ Triangular
⚪ Semi-circular
Answer. Triangular
46. What is the function of power pack in CNC machine?
⚪ To keep the oil heat balanced
⚪ To increase the oil heat
⚪ To eliminate the oil heat completely
⚪ All of the above
Answer. To keep the oil heat balanced
47. The lathe which does a large number of works in a short time is called.
⚪ Speed Lathe
⚪ Turret Lathe
⚪ Centre Lathe
⚪ Tool Room Lathe
Answer. Turret Lathe
48. The property of converting metal into sheet is called …..
⚪ Elasticity
⚪ Ductility
⚪ Flexibility
⚪ Malleability
Answer. Malleability
49. The head of the combination set with which any angle is checked is called ………?
⚪ Square Head
⚪ Protector Head
⚪ Centre Head
⚪ Rule
Answer. Protector Head
50. The Indian Boiler Act, 1923 is applicable on?
⚪ All boilers
⚪ Boilers of capacity more than 100 litres
⚪ Boilers of capacity more than 1000 litres
⚪ All of the above
Answer. Boilers of capacity more than 100 litres
51. In bilateral system of tolerance, tolerance is allowed on?
⚪ One side of actual size
⚪ One side of designated size
⚪ Both sides of actual size
⚪ Both sides of designated size
Answer. Both sides of designated size
52. Lead screw of machine tools is made of ……….
⚪ Trapezoidal thread
⚪ Saw tooth thread
⚪ Triangular
⚪ V thread
Answer. Trapezoidal thread
53. Which saw is used for thin curves and profiles which have quick bend?
⚪ Bow saw
⚪ Coping saw
⚪ Fret saw
⚪ Compass saw
Answer. Bow saw
54. In CNC machines, M13 command means?
⚪ Coolant
⚪ Coolant on
⚪ Spindle stop
⚪ Coolant on and spindle on
Answer. Coolant on and spindle on
55. This file is best for giving good finish to metal and filing hard metals?
⚪ Bastard file
⚪ Rough file
⚪ Smooth file
⚪ Second cut file
Answer. Second cut file
56. Gun metal is an alloy of?
⚪ Copper, tin and lead
⚪ Copper, lead and zinc
⚪ Copper, tin and zinc
⚪ None of these
Answer. Copper, tin and zinc
57. Producing a flat surface by a reciprocating type of machine tool is called?
⚪ Lathe
⚪ Shaper
⚪ Drill
⚪ Milling
Answer. Shaper
58. What is the difference between jig and fixture?
⚪ Jig is used for holding and holding the work piece while fixture is used only for holding the work piece
⚪ Jig is used for holding the work piece while fixture is used for holding the work piece
⚪ Jig is a tool holder and fixture is a work holder
⚪ None of the above
Answer. Jig is used for holding and holding the work piece while fixture is used only for holding the work piece
59. Which part of an anvil is used to support the metal when cutting by means of a chisel?
⚪ Born
⚪ Surface
⚪ Cutting block
⚪ Back
Answer. Cutting block
60. Steady rest is generally used for…………
⚪ Holding tool
⚪ Support for turning long and thin work piece
⚪ Eccentric turning
⚪ Clamping of work piece
Answer. Aids in turning long and thin workpieces
61. What should be the lip clearance angle of a brick drill for general purpose?
⚪ 20° to 25°
⚪ 12° to 15°
⚪ 3° to 5°
⚪ 4° to 8°
Answer. 12° to 15°
62. What is the difference between abrasive and bond in a wheel called?
⚪ Grit
⚪ Bond
⚪ Grade
⚪ Structure
Answer. Structure
63. Multi start threads are cut on lathe by?
⚪ By chaser
⚪ By die head
⚪ By single point tool
⚪ By split die
Answer. By single point tool
64. The range of lathe spindle speed will be?
⚪ 1200 to 3600 cycles per minute
⚪ 1800 to 3600 cycles per minute
⚪ 2000 to 3600 cycles per minute
⚪ 3000 to 3600 cycles per minute
Answer. 1200 to 3600 cycles per minute
65. If the diameter of the shaft is slightly less than that of the hole, then which type of fit is it?
⚪ Clearance fit
⚪ Interference fit
⚪ Transition fit
⚪ All of the above
Answer. Clearance fit
66. What are the scratches on a surface called?
⚪ Waviness
⚪ Roughness
⚪ Hills and valleys
⚪ Hill nas
Answer. Waviness
67. What is the other name of ‘Audlag Caliper’?
⚪ Janney Caliper
⚪ Divider
⚪ Vernier Caliper
⚪ None of these
Answer. Janney Caliper
68. What is the purpose of multi-start grade?
⚪ Pause activity
⚪ Delayed activity
⚪ Slow activity
⚪ Rapid activity
Answer. Rapid activity
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