ITI Turner Theory Solved Paper PDF Download
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1. Which of the following is not a requirement of TPM?
⚪ Production without compromising the quality of products
⚪ Reducing cost expenditure
⚪ Better health and safety
⚪ Error-free products sent to customers
Answer: Better health and safety
2. Which saw is used to cut large internal curves?
⚪ Bow saw
⚪ Coping saw
⚪ Fret saw
⚪ Compass saw
Answer. Compass saw
3. According to the Factories Act 1948, Part 23, which machine is not a dangerous machine?
⚪ Circular saw
⚪ Milling machine used in metalworking business
⚪ Power presses other than hydraulic presses
⚪ Grinding machine
Answer. Grinding machine
4. Split pin is used with which of the following nuts for locking?
⚪ Flange nut
⚪ Castle nut
⚪ Lock nut
⚪ Square nut
Answer. Castle nut
5. One part of the center lathe is tumbler gear, it is used for the following reasons.
⚪ It can change the direction of feed
⚪ It transmits motion from the feed shaft to the carriage
⚪ It can change the direction of rotation of the work
⚪ It can change the spindle speed
Answer. It can change the direction of feed
6. Which jig has a body made from a solid block of steel and is used for drilling small parts?
⚪ Solid Jig
⚪ Drill Jig
⚪ Plate Jig
⚪ Channel Jig
Answer. Solid Jig
7. Which type of fit is present in simple pressure fitting?
⚪ Force Fit
⚪ Running Fit
⚪ Push Fit
⚪ Shrinkage Fit
Answer. Push Fit
8. Tool setting on NC machine is done on …… unit?
⚪ Pre-setting device
⚪ On special device away from the machine
⚪ During idle time on NC machine
⚪ When other operations are being done on the machine itself
Answer. Pre-setting device
9. Loaded wheel is fixed by ……..
⚪ Drill
⚪ Dresser
⚪ Reamer
⚪ Turning
Answer. Dresser
10. Which type of milling cutter is used for high speed milling operation?
⚪ Zero rake
⚪ Negative rank
⚪ Positive rake
⚪ None of these
Answer. Negative rank
11. Case hardening of mild steel is done, its core is ………….
⚪ Completely hard
⚪ Soft and brittle
⚪ Brittle
⚪ None of the above
Answer. Soft and brittle
12. CNC lathe has built-in corrdinating measuring system, in this system …… is called zero position?
⚪ Reference point
⚪ Machine zero point
⚪ Work zero point
⚪ Program zero point
Answer. Machine zero point
13. For drilling complex shaped workpieces in different directions ……….. is used?
⚪ Trunnion Jig
⚪ Post Jig
⚪ Table Jig
⚪ Universal Jig
Answer. Trunnion Jig
14. Point to point control system is suitable for which of the following.
⚪ Turning
⚪ Profile milling
⚪ Grinding
⚪ Drilling
Answer. Drilling
15. The best tie ropes for lifting are?
⚪ Manila ropes
⚪ Hemp ropes
⚪ Cotton ropes
⚪ Wire ropes
Answer. Manila ropes
16. What does ” symbol represent?
⚪ Machine finish
⚪ Grinding finish
⚪ Forging
⚪ Honing and lapping finish
Answer. Forging
17. What is the included angle of ISO metric trade?
⚪ 55°
⚪ 29°
⚪ 60°
⚪ 45°
Answer. 60°
18. The structure of grinding wheel represents?
⚪ Girth ratio of distance between abrasive and bond
⚪ Represents the size of abrasive grain
⚪ Represents the bond used for the wheel
⚪ None of the above
Answer. Girth ratio of distance between abrasive and bond
19. Friction cone clutch is used in………?
⚪ Fixed mesh gear box
⚪ Synchromesh
⚪ In-line sliding gear box
⚪ None of the above
Answer. Synchromesh
20. ………operation is used in making large size bolts.
⚪ Upset ironing
⚪ Swage
⚪ Hammer ironing
⚪ Round ironing
Answer. Upset ironing
21. From which of these metals wires cannot be drawn?
⚪ Aluminium
⚪ Copper
⚪ Cast iron
⚪ Mild steel
Answer. Cast iron
22. Knuckle trade is used for.
⚪ Screw check
⚪ Carpenter vice
⚪ For railway couplings
⚪ Fly press
Answer. For railway couplings
23. What is the main purpose of heat treatment?
⚪ To increase brittleness
⚪ To soften the steel
⚪ To increase hardness
⚪ To improve the mechanical properties of steel
Answer. To improve the mechanical properties of steel
24. In case of railway tracks, what is meant by ‘gauge’?
⚪ Distance between the outer faces of two rails
⚪ Distance between the inner faces of two rails
⚪ Height of the rail piece
⚪ Length of concrete sleepers used to hold two steel rails together
Answer. Distance between the inner faces of two rails
25. A 25 mm castle nut has slots in:
⚪ 4
⚪ 5
⚪ 6
⚪ 8
Answer. 6
26. Brown and Sharp tapers are generally used for?
⚪ Lathe
⚪ Milling machines
⚪ Shapers
⚪ Drills
Answer. Milling machine
27. As per the definition of week mentioned in the Factory Act, 1948, it is a period of 7 days which begins from midnight of the following?
⚪ Sunday
⚪ Monday
⚪ Saturday
⚪ Friday
Answer. Monday
28. What is worn to protect the feet?
⚪ Slippers
⚪ Canvas shoes
⚪ Leather shoes
⚪ All of the above
Answer. Leather shoes
29. In which system tolerance is given on both sides of the basic size?
⚪ Unilateral
⚪ Bi Lateral
⚪ British Method
⚪ Metric Method
Answer. Bi Lateral
30. What determines the grade of grinding wheel?
⚪ Size of abrasive
⚪ Density
⚪ Bond
⚪ Friction
Answer. Bond
31. This type of teeth are sharp pointed and in a row on the face of the file, they are used for sanding wood, leather and other hot substances. This file is called?
⚪ Single cut file
⚪ Double cut file
⚪ Rasp cut file
⚪ Curled cut file
Answer. Rasp cut file
32. Which tool is used to correct glazing, loading or pits caused by the wheel?
⚪ Dressing tool
⚪ Cutting tool
⚪ Hand tool
⚪ None of the above
Answer. Dressing tool
33. While taking the measurement of zero of set in CNC machine, the machine should be in …………. mode.
⚪ MDI
⚪ Jog
⚪ Automatic
⚪ Pre-set
Answer. Jog
34. Hand file is?
⚪ Taper in width
⚪ Parallel in thickness
⚪ Parallel in width
⚪ Parallel in width Taper in thickness
Answer. Taper in thickness Parallel in width
35. Hardened steel can be used only after which of the following processes?
⚪ Carbonitriding
⚪ Nitriding
⚪ Cyaniding
⚪ Tempering
Answer. Tampering
36. Balancing of wheel is done to.
⚪ Make the sides of the wheel parallel
⚪ Make the outer diameter concentric to the bore
⚪ Apply uniform weight on each position of the wheel
⚪ None of the above
Answer. Apply uniform weight on each position of the wheel
37. What is used to measure external measurement indirectly?
⚪ Inside caliper
⚪ Outside caliper
⚪ Janney caliper
⚪ Micrometer
Answer. Outside caliper
38. Sledge hammer is used for heavy forging. Its weight is …………. to …………. kg?
⚪ 2 to 10 kg
⚪ 2 to 7 kg
⚪ 3 to 5 kg
⚪ 4 to 10 kg
Answer. 2 to 10 kg
39. Which of the following properties should not be present in spring material?
⚪ Flexibility
⚪ Brittleness
⚪ Toughness
⚪ Strength
Answer. Brittleness
40. The coupler used as knee joint in milling machine is.
⚪ Flange coupler
⚪ Universal coupler
⚪ Flange coupler and universal coupler
⚪ Muff coupler
Answer. Universal coupler
41. What are the main features of self piercing screws?
⚪ They have flutes cut in them
⚪ The head is of the same type
⚪ They are pointed and have double start
⚪ None of the above
Answer. They are pointed and have double start
42. Steady rest is used?
⚪ For moving the job
⚪ For holding the job
⚪ To support the job
⚪ For crooked jobs
Answer. To support the job
43. The accuracy of master surface plate is?
⚪ 0.001 inch
⚪ 0.0001 inch
⚪ 0.00001 inch
⚪ 0.000001 inch
Answer. 0.00001 inch
44. For turning the entire length of a taper the tail stock is fixed where the diameters of the two ends of the work piece are D and d respectively.
⚪ (Dd)/2L
⚪ (Dd)/L
⚪ (Dd)/2
⚪ Dd
Answer. (Dd)/2
45. How is clearance fit maintained?
⚪ Positive
⚪ Negative
⚪ Both of the above
⚪ None of the above
Answer: Positive
46. All the basic heat treatment processes for steel involve?
⚪ Transformation of austenite
⚪ Transformation of pearlite
⚪ Transformation of martensite
⚪ Transformation of eutectoid
Answer. Transformation of austenite
47. Lathe cutting tools of ceramics work safely up to ……………°C.
⚪ 1200°C
⚪ 1000°C
⚪ 1600°C
⚪ 80°C
Answer. 1200°C
48. The required amount of pressurized air enters from the air chamber through the doors of the cupola furnace. These doors are called ………….
⚪ Limbs
⚪ Sew
⚪ Tears (spout)
⚪ Riser
Answer. Tears (spout)
49. Laps in forging are caused by –
⚪ Not keeping the hammer set properly on the stock
⚪ Not heating the stock properly
⚪ Not setting the stock correctly
⚪ All of the above
Answer. Not keeping the hammer set properly on the stock
50. Locks which can be operated from inside or outside by operating the locking arm are called…………?
⚪ Mortise lock
⚪ Rim lock
⚪ Pad lock
⚪ Night latch lock
Answer. Night latch lock
51. In which machining process, large amount of material is removed?
⚪ Lapping
⚪ Milling
⚪ Honing
⚪ Buffing
Answer: Milling
52. Chisel is used to cut metal in cold or hot state. The cutting point angle of chisel is known as.
⚪ As rack angle
⚪ As clearance angle
⚪ As wedge angle
⚪ As inclined angle
Answer. As wedge angle
53. What is the use of anvil?
⚪ Casting
⚪ Drilling
⚪ Fitting
⚪ Welding
Answer. Fitting
54. The amount of material removed is more in………?
⚪ Drilling
⚪ Reaming
⚪ Honing
⚪ Lapping
Answer. Drilling
55. Nowadays, illegal vehicles parked on the roads are lifted by?
⚪ By travelling crane
⚪ By truck mounted crane
⚪ By jib crane
⚪ All of the above
Answer. By truck mounted crane
56. A jig is a device that
⚪ locates the workpiece
⚪ guides the cutting tool
⚪ clamps the workpiece
⚪ All of the above
Answer. All of the above
57. In hole basis method…….
⚪ The size of the hole is big
⚪ The size of the hole is small
⚪ The size of the hole is kept constant and the size of the shaft is kept more or less according to the fitting
⚪ The size of the shaft is kept constant and the size of the hole is kept more or less according to the fitting
Answer. The size of the hole is kept constant and the size of the shaft is kept more or less according to the fitting
58. What is the function of fixture?
⚪ Bushing
⚪ Clamping
⚪ Holder
⚪ Guide
Answer. Clamping
59. Which of the following is not an advantage of CNC machine?
⚪ With its use, inspection cost is reduced
⚪ Tooling cost is reduced
⚪ Production rate increases
⚪ Initial cost is high
Answer. Initial cost is high
60. What is the process called which helps in producing micro particles for uniformity of structure and improving mechanical properties?
⚪ Normalizing
⚪ Annealing
⚪ Hardening
⚪ Tempering
Answer. Normalizing
61. There are various spindle motions on a lathe?
⚪ In arithmetic order
⚪ In geometric order
⚪ In harmonic order
⚪ In positional order
Answer. In geometric order
62. In lathe machine operation, feed rod is fitted on…………?
⚪ Compound slide in axial motion
⚪ Tail stock movement
⚪ Carriage in automatic turning
⚪ Tool post arrangement
Answer. Carriage in automatic turning
63. Which of the following pairs is correctly matched?
⚪ Silver iodide – Horn silver
⚪ Silver chloride – Artificial rain
⚪ Zinc phosphide – Rat poison
⚪ Zinc oxide – Philosopher’s wool
Answer. Zinc oxide – Philosopher’s wool
64. What is the set of several gears used in a lathe machine called?
⚪ Intermediate gear
⚪ Gear train
⚪ Bevel gear
⚪ None of these
Answer. Gear train
65. In a multi start shed, the lead is equal to …………..
⚪ Pitch + Number of turns
⚪ Pitch/Number of turns
⚪ Pitch-Number of turns
⚪ Pitch x Number of turns
Answer. Pitch x Number of turns
66. Which tool is used to remove unwanted metal from the surface of the job?
⚪ File
⚪ Chisel
⚪ Both of the above
⚪ None of these
Answer. both of the above
67. In a lathe machine, what is the process of enlarging an already existing hole on the workpiece called?
⚪ Expansion
⚪ Finishing
⚪ Boring
⚪ Drilling
Answer. Boring
68. Identify the temporary joint from the following?
⚪ Welded joint
⚪ Riveted joint
⚪ Soldered joint
⚪ Press fit joint
Answer. Press fit joint
69. The melting point of cast iron (in °C) lies in the following range?
⚪ 1150-1300
⚪ 1800-1900
⚪ 1450-1600
⚪ 600-700
Answer. 1150-1300
ITI Turner Theory Model Paper PDF Download
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