Important questions asked in ITI Turner Theory
All the candidates preparing for ITI Turner Theory need very important study material related to this exam so that they can prepare for this exam in the best way. So, for the candidates who are preparing for ITI Turner Theory, some important questions asked in the ITI Turner Theory exam and their answers have been given in this post of ours, which you should read carefully. These questions have already been asked in many ITI Turner Theory exams and can be asked in the upcoming exams.
Turner Theory Previous Year Question Paper
1. Which of the following statements about flange coupler is false?
⚪ Flange coupler has high moment transfer capability
⚪ Flange coupler is easy to intersect and assemble
⚪ Flange coupler is easy to design and manufacture
⚪ It can tolerate non-perpendicularity between two shafts
Answer. It can tolerate non-perpendicularity between two shafts
2. CNC machine is classified according to axis?
⚪ 2 axis
⚪ 3 axis
⚪ 4 axis
⚪ All of the above
Answer. All of the above
3. The size of sine bar is determined by……………?
⚪ Width
⚪ Distance between the centers of both rollers
⚪ Weight
⚪ All of the above
Answer. Distance between the centers of both rollers
4. What is used to clamp the workpiece in mass production?
⚪ Template
⚪ Jing
⚪ Gauge
⚪ Fixture
Answer. Fixture
5. The difference between the upper limit and lower limit of dimension is called.
⚪ Basic size
⚪ Fit
⚪ Actual size
⚪ Tolerance
Answer. Tolerance
6. Open frame grinding wheel is used for –
⚪ Hard and brittle materials
⚪ Plastic materials
⚪ Soft and ductile materials
⚪ Titanium material
Answer. Soft and ductile material
7. In screw thread, the upper surface of the thread which joins two adjacent sides is called…………?
⚪ Back less
⚪ Flank
⚪ Crest
⚪ Shot
Answer. Crest
8. Driving plates are used.
⚪ In mounting the fixture and the workpiece
⚪ In driving between centres with lathe dogs
⚪ Only in facing operations
⚪ Only in internal operations
Answer. In driving between centres with lathe dogs
9. The difference between the two diameters in a fixed length of a taper job is called taper conicity. It is found out.
⚪ D – d/2
⚪ D – d/l
⚪ D – d/2l
⚪ 2D – d/2
Answer. D – d/2l
10. In annealing, cooling is done by……….
⚪ Very fast
⚪ Quickly
⚪ Very slowly
⚪ In air
Answer. Very slowly
11. The point used to take the measurement of x, y and z axes on a CNC machine is called…..?
⚪ Work zero point
⚪ Machine zero point
⚪ Common zero point
⚪ All of the above
Answer. All of the above
12. Helical gears are made on which of the following milling machines?
⚪ Vertical milling machine
⚪ Horizontal milling machine
⚪ Universal milling machine
⚪ Drum type milling machine
Answer. Universal milling machine
13. The normal length of blade for hand operation in saw is.
⚪ 250 to 350 mm.
⚪ 200 to 300 mm.
⚪ 220 to 330 mm.
⚪ 280 to 330 mm.
Answer. 250 to 350 mm.
14. Which of the following process is called case hardening?
⚪ Normalizing
⚪ Carburizing
⚪ Annealing
⚪ Hardening
Answer. Carburizing
15. Which type of bolt is mostly used?
⚪ Cheese head
⚪ Hook bolt
⚪ Hexagonal bolt
⚪ Eye bolt
Answer. Hexagonal bolt
16. Fingers of fixed steady are fitted at.
⚪ At 90° angle
⚪ At 120° angle
⚪ At 60° angle
⚪ At 75° angle
Answer. At 120° angle
17. While filing soft metal, the teeth of the file get covered with small metal particles. The file should be cleaned by?
⚪ Washing with water
⚪ Rubbing with a cloth
⚪ Washing with dilute acid
⚪ Using a file card
Answer. Using a file card
18. Crunching occurs in power hammer saw.
⚪ Forward stroke
⚪ Back stroke
⚪ Both forward and back strokes
⚪ In the back stroke the frame rises a little.
Answer. Forward stroke
19. Which of the given elements is a good conductor of electricity?
⚪ Copper
⚪ Silver
⚪ Aluminium
⚪ Brass
Answer. Silver
20. In lathe cutting, the bronze tip is made of which metal?
⚪ Mild steel
⚪ High carbon High chromium
⚪ Tool steel
⚪ Tungsten carbide
Answer. Tungsten carbide
21. Jig is used for?
⚪ For operations like drilling, reaming and tapping etc.
⚪ To clamp the workpiece
⚪ To guide the tool
⚪ Only for drilling
Answer. For operations like drilling, reaming and tapping etc.
22. Black bolts are made according to production. They
are made on lathe machine. ⚪
They are made by forging.
⚪ They are made by automatic machine.
⚪ All the three of the above
are answered. They are made by forging.
23. Dynamometer is a device which is used in measuring the following?
⚪ Chip thickness ratio
⚪ Force during cutting metal
⚪ Wear of cutting tool
⚪ Deflection of cutting tool
Answer. Force during cutting metal
24. Parallel or tapered cylindrical job is grinded by which grinder?
⚪ Pedestal
⚪ Flexible
⚪ Cylindrical
⚪ Center less
Answer. Flexible
25. Two parallel shafts can be connected by …………..
⚪ Cross helical gear
⚪ Straight spur gear
⚪ Spiral gear
⚪ Bevel gear
Answer. Straight spur gear
26. Center punch is made of the following material?
⚪ Brass
⚪ Cast Iron
⚪ Mild Steel
⚪ High Carbon Steel
Answer. High Carbon Steel
27. Alloy solder melts at.
⚪ 105°C to 142°C
⚪ 152°C to 178°C
⚪ 183°C to 255°C
⚪ 273°C to 314°C
Answer. 183°C to 255°C
28. What types of fits are sliding and running fits?
⚪ Clearance fit
⚪ Interference fit
⚪ Transition fit
⚪ All of the above
Answer. Clearance fit
29. Which gears are used to transmit power at 90°?
⚪ Bevel gear
⚪ Helical gear
⚪ Spur gear
⚪ Rack and pinion
Answer. Bevel gear
30. In a triangular shred, the angle of one side is 90 degree and the angle of the other side is 45 degree, the grade will be related to?
⚪ Metric trade
⚪ Buttress shred
⚪ Acme shred
⚪ Knuckle shred
Answer. Buttress shred
31. Universal milling machine has ………….
⚪ Quick regression arrangement
⚪ Inducing arrangement
⚪ Full-proof arrangement
⚪ None of these
Answer. Inducing arrangement
32. Ironing of plain carbon steel is done at this temperature.
⚪ 750 degree Celsius
⚪ 900 degree Celsius
⚪ 1100 degree Celsius
⚪ 1300 degree Celsius
Answer. 1300 degree Celsius
33. What is the accuracy of master gauge?
⚪ 0.00001”
⚪ 0.0001”
⚪ 0.001”
⚪ 0.01”
Answer. 0.0001”
34. In which of the following operations of lathe, the spindle speed is minimum?
⚪ Knurling
⚪ Taper turning
⚪ Splitting
⚪ Shred cutting
Answer. Shred cutting
35. The purpose of sub program is……?
⚪ For extra small machining
⚪ Minimum calculations for finding X,Y,Z co-ordinates
⚪ To prevent the tool from digging into the job surface due to its fast movement
⚪ The program block cannot be reused again and again while machining a particular number of patterns
Answer. The program block cannot be reused again and again while machining a particular number of patterns
36. A 50-M 6-V 18 is a feature of the following?
⚪ Grinding wheel
⚪ Abrasive powder
⚪ Auger jig
⚪ All of the above
Answer. Grinding wheel
37. In which direction should the teeth of the blade be during hacksawing?
⚪ Towards the front
⚪ Towards the back
⚪ In any condition
⚪ None of these
Answer. Towards the front
38. In nitriding process NH2 gas is passed when the temperature is?
⚪ 500°C to 560°C
⚪ 600°C to 650°C
⚪ 650°C to 700°C
⚪ 575°C to 600°C
Answer. 500°C to 560°C
39. The process of increasing the sectional dimension is?
⚪ Drawing down
⚪ Setting down
⚪ Upsetting
⚪ Cutting down
Answer. Upsetting
40. In the standard terminology written on grinder WA46K 5V 17, what does v represent?
⚪ Type of abrasive
⚪ Structure
⚪ Type of bond
⚪ Main size
Answer. Type of bond
41. Lathe spindle contains?
⚪ Inner grade
⚪ External shred
⚪ Taper shred
⚪ No shred
Answer. External shred
42. Which of the following lathe parts is not provided with power feed?
⚪ Carriage
⚪ Compound rest
⚪ Cross slide
⚪ Feed screw
Answer. Compound rest
43. Which hand tool is usually used in forging and riveting?
⚪ File
⚪ Claw hammer
⚪ Ball pin hammer
⚪ Punch
Answer. Ball pin hammer
44. Which tool is used to check the centre while fastening a job in a four-jaw chuck on a lathe?
⚪ Calipers
⚪ Divider
⚪ Surface gauge
⚪ Straight pin scriber
Answer. Surface gauge
45. Drill jig bushes are usually hard so that …….
⚪ The jig can be protected
⚪ It does not get tilted while guiding the tool
⚪ Chips can be removed easily
⚪ Guide the tool correctly and the bush can last for a long time
Answer. Guide the tool correctly and the bush can last for a long time
46. The property by which a metal is drawn into a wire without failing is called?
⚪ Malleability
⚪ Strength
⚪ Ductility
⚪ Flexibility
Answer. Ductility
47. The melting point of spelter is?
⚪ 122°C
⚪ 356°C
⚪ 423°C
⚪ 650°C
Answer. 650°C
48. Feeding the tool from the work centre into the periphery of a lathe machine is called.
⚪ Shredding
⚪ Parting off
⚪ Facing
⚪ Knurling
Answer. Facing
49. Which of the following is used to hold pipes between 15 mm to 50 mm?
⚪ Pipe vice
⚪ Chain pipe wrench
⚪ Pipe wrench
⚪ Foot print wrench
Answer. Pipe wrench
50. While marking, reference surface is obtained by …………..
⚪ Surface gauge
⚪ Work piece
⚪ Drawing for work
⚪ Surface of marking table
Answer. Drawing for work
51. Pig iron is manufactured in which furnace?
⚪ Blast furnace
⚪ Open hearth furnace
⚪ Cupola furnace
⚪ Electric Arc furnace
Answer. Blast furnace
52. In mass production, which of the following is used to guide the tool and hold the job tightly?
⚪ Template
⚪ Housing
⚪ Jig
⚪ Fixer
Answer. Jig
53. Crater wear occurs in the following parts of a single point cutting tool?
⚪ Flank
⚪ Side
⚪ Rack
⚪ Tip
Answer. Tip
54. The process in which steel, depending upon its carbon content, is heated to a suitable temperature and held for sufficient time and then slowly cooled in a furnace is called?
⚪ Tempering
⚪ Annealing
⚪ Normalising
⚪ Hardening
Answer. Annealing
55. File is specified by?
⚪ Length
⚪ Length and size
⚪ Length, size and type of cut
⚪ Type of cut
Answer. Length, shape and type of cut
56. For which work is a sensor gauge used?
⚪ To check the gap between two mating surfaces
⚪ To check the accuracy of holes
⚪ To check the diameter of the shaft
⚪ To check the diameter of cylindrical parts
Answer. To check the gap between two mating surfaces
57. A good ductile acidic flux for soldering zinc and galvanized iron is.
⚪ Zinc chloride
⚪ Ammonium chloride
⚪ Hydrochloric acid
⚪ Borax
Answer. Hydrochloric acid
58. In which power transmission slippage occurs…
⚪ In gear
⚪ In chain
⚪ In sprocket
⚪ In belt
Answer. In belt
59. Back gear mechanism in cone pulley head stock is used for………………
⚪ To reduce the speed of the spindle
⚪ To increase the speed of the spindle
⚪ To run the spindle in reverse
⚪ To transfer the power from the spindle gear to the stud gear
Answer. To reduce the speed of the spindle
60. M 10 x 1.25 represents fine shred, this tread is used for the following purpose?
⚪ When force is required for stabilizing the shred
⚪ To prevent the shred from opening easily
⚪ When other types of threads are not available
⚪ When coarse pitch is not available
Answer. To prevent the shred from opening easily
61. The characteristics of continuous path are ………..
⚪ It is also called contouring system
⚪ In this the tool and workpiece are in inter related motion on the coordinate axis
⚪ Through this the feed and speed of the cutter are set
⚪ All of the above
Answer. All of the above
62. What is the difference between the largest measurement of a hole and the shortest part of the shaft called?
⚪ Fit
⚪ Tolerance
⚪ Maximum allowance
⚪ Minimum allowance
Answer. Maximum allowance
63. The thickness of plain washer is kept as …………..
⚪ D/2 (Dia of hole)
⚪ D/4
⚪ D/8
⚪ D/6
Answer. D/8
64. Downmilling operation can be carried out only on ……..
⚪ Hardened machine
⚪ Plain milling machine
⚪ Hardened machine with backlash eliminator
⚪ Hand milling machine
Answer. Hardened machine with backlash eliminator
65. Which of the following is not an advantage of CNC?
⚪ Many operations can be performed on a CNC machine
⚪ Inspection cost is reduced
⚪ It is difficult to correct the difference in measurement
⚪ The functioning of the machine does not depend on human operation skills
Answer. It is difficult to correct the difference in measurement
66. If a patient does not correct breathing through the mouth, then the first aid should be done as follows?
⚪ Seek medical help immediately
⚪ Check for broken bones
⚪ Keep the body warm with a blanket
⚪ Check the pulse and eyes
Answer. Seek medical help immediately
67. Which compass is used to draw a circle or arc of a large diameter?
⚪ Ordinary compass
⚪ Wing compass
⚪ Tamale compass
⚪ Spring compass
Answer. Tamale compass
68. The most important basic property of cutting tool material is?
⚪ Brittleness
⚪ Permeability
⚪ Elasticity
⚪ Toughness
Answer. Toughness
69. The alloys in high speed steel are in the following ratio.
⚪ Chromium = 8%, Tungsten = 46, Vanadium = 1%
⚪ Chromium = 4%, Tungsten = 18%, Vanadium = 1%
⚪ Cobalt = 8%, Tungsten = 4%, Vanadium = 1%
⚪ Chromium = 4%, Tungsten = 1%, Vanadium = 1%
Answer. Chromium = 4%, Tungsten = 18%, Vanadium = 1%
70. Which of these instruments can be used for both conical and angular measurements?
⚪ Sine bar
⚪ Propeller
⚪ Auto collimator
⚪ Combination set
Answer. Sine bar
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