ITI Turner Theory Question And Answer
Every year lakhs of candidates prepare for the recruitment of RRB ALP and appear for its examination but not every candidate is able to pass this examination because he is not able to prepare properly at the right time. So the candidate who is preparing for RRB ALP recruitment. For that, many tests have been given on our website, by solving which he can prepare himself. In today’s post also, you have been given important questions of Turner theory asked in ITI RRB exam and their answers in the form of 1 mock test, by solving which you can improve your preparation.
Turner Objective Question Paper
•Cutting angle
•Rake angle
•Clearance angle
•Lip angle
Answer. Cutting angle
2. Negative rake is used for………..
•Heavy loess
•Harder materials
•Carbide tools
•All of these
Answer. Heavy loess
3. The main function of jig and fixture is ……….
•Increasing machining precision
•Simplifying interchangeability
•Reducing costs on quality control
•All of these
Answer. All of these
4. Letters representing soft grade grinding wheel are………..
•A to H
•. to P
•to 2
•A to P
Answer. A to H
5. Life of equipment can be measured by………….
•Number of pieces machined between tool sharpenings
•Contact time of tool with job
•Volume of material removed between tool sharpenings
•All of these
Answer. All of these
•Soluble oil
•Water soluble oil or sulfur based mineral oil
•Mineral and fatty oil
•Dry
Answer. Water soluble oil or sulfur based mineral oil
7. What will be the average cutting speed for turning mild steel with a high speed steel troll?
•15 to 19 mo/min
•25 to 31 m/m
•60 to 90 m/min
•90 to 120 m/min
Answer. 25 to 31 m/m
8. What is the purpose of using flux in soldering?
•Preventing the formation of oxides
•Filling the missing gaps of a bad joint
•Increasing the fluidity of the solder metal
•Decreasing the melting temperature of the solder
Answer. Preventing the formation of oxides
9. The hardness of carbon steel increases when ………. is added to it?
•Tugsten
•Chromium and Vanadium
•Silicon
•Manganese
Answer. Chromium and Vanadium
•Negative rake angle
•Positive rake angle
•Any rake angle
•No rake angle
Answer. Negative rake angle
•Remains constant
•Increases
•Decreases
•First increases then decreases
Answer: Decreases
12. Which of the following tool materials has high cutting speed?
•Carbon steel
•HSS
•Cast alloy
•Carbide
Answer. Carbide
13. Fixtures are used for………….
•To hold and guide the tool in drilling, reaming, tapping operations
•To hold the work in milling, grinding, planing or turning operations
•To check the precision of the workpiece
•None of the above
Answer. To hold the work in milling, grinding, planing or turning operations
14. When the face of a tool is grinded in a slope from the nose towards the back edge it is called………….?
•Positive rake
•Negative rake
•Zero rake
•All of these
Answer. Positive rake
•Surface roughness
•Gear profile
•Internal taper
•External tapers
Answer. External tapers
16. What is the angle formed between the front part of the tool and the parallel surface of the base of the tool called?
•Rake angle
•Clearance angle
•Cutting angle
•Lip angle
Answer. Rake angle
17. The grinding wheel that holds the abrasive grains more securely is called ………..
•Soft grade
•Hard grade
•Medium grade
•All of these
Answer. Hard grade
18. The best machine for mass production of watch components machined from bars is:
•Turret Lathe
•Capstan Lathe
•Numerically Controlled Machine
•Main Spindle Automatic Lathe
Answer. Main Spindle Automatic Lathe
•Depth of cut
•Cutting speed
•Feed
•All of these
Answer. All of these
20. The taper of internal dovetail can be measured with the help of………….
•Sine Bars
•Combination Sets
•Balls and Slip Gauges of Standard Dimensions
•Dial Gauges
Answer. Balls and Slip Gauges of Standard Dimensions
21. Jig is defined as a tool that performs…………..
•Holds and positions the workpiece, guides and controls one or more cutting tools
•Holds and positions the workpiece during inspection and production operations
•For accuracy-checking the workpiece
•All of the above
Answer. Holds and positions the workpiece, guides and controls one or more cutting tools
•Casing in brass
•Making steel look like brass
•Joining plastic sheets
•Hard soldering using brass spelter
Answer. Hard soldering using brass spelter
23. A sheep shield with a horizontal is called.
•Helix
•Lead
•Pitch
•Helix Angle
Answer. Helix Angle
24. The flux commonly used in brazing is ………..
•Zinc chloride
•Ammonium chloride
•Rosin plus alcohol
•Borax
Answer. Borax
•Water
•Soluble oil
•Dry
•Heavy oil
Answer. Soluble oil
•Increases
•Decreases
•Has no effect
•Any of these
Answer. Increases
27. The perpendicular distance between waste and root is called ………..
•Angle of thread
•Depth of thread
•Depth of cut
•Slope of thread
Answer. Depth of thread
•Increases tool life
•Increases tool life
•Produces chipping and reduces tool life
•Results in excessive stress concentration and excessive heat generation
Answer. Produces chipping and reduces tool life
29. The amount of Vanadium in HSS cutting tool material is approximately…………?
•16%
•4%
•1%
•0.1%
Answer. 1%
30. Tool life is usually better when……….
4
•The grain size of metal should be large
•The grain size of metal should be small
•The components of the micro structure of the tool material should be hard
•None of these
Answer. The grain size of metal should be large
31. Fine grained grinding wheel is used to grind………….
•Hard and brittle material
•Soft and ductile material
•Hard and ductile material
•Soft and brittle material
Answer. Hard and brittle material
•Increasing tool life
•Removing chips from the bed
•Breaking chips into smaller pieces
•Reducing heat generation
Answer. Breaking chips into smaller pieces
33. HSS cutting tool material contains chromium.
•16%
•4%
•1%
•0.6%
Answer. 4%
34. Jig is used for………..
•To hold and guide the trul in drilling, reaming, tapping operations
•To hold the work in milling, grinding, planing or turning operations
•To check the accuracy of the workpiece
•None of these
Answer. To hold and guide the trul in drilling, reaming, tapping operations
•Hardness of the material to be grinded
•Speed and action of the wheel
•Position of the grinding wheel
•This is
the Answer. This is the Answer.
•To cool the tool
•To improve the surface finish
•To cool the workpiece
•All of these
Answer. All of these
•The amount of material to be removed
•The hardness of the material to be grinded
•The desired finish
•All of these
Answer. Hardness of the material to be grinded
38. Usually for layout work it needs to be kept in vertical position. For this purpose it is clamped with ………..
•Surface plate
•Machine bed
•Angle plate
•Block
Answer. Angle plate
39. The following type of jig is used for machining in more than one plane:
•Template jig
•Plate type jig
•Open type jig
•Box type jig
Answer. Box type jig
40. Which bond is used for cut-off wheels?
•Rubber
•Vertified
•Resinoid
•Shellac
Answer. Rubber
•Reduces tool life
•Increases tool life
•No effect on tool life
•Destroys workpiece
Answer: Reduces tool life
42. The standard length of sine bar is measured in ………..?
•Edge to edge
•Between the inner circumference of two buttons
•Between the outer circumference of two buttons
•Between the center of two buttons
Answer. Between the center of two buttons
•Mild steel
•Alloy
•Pig iron
•Cast iron
Answer. Cast iron
•Positive rake
•Negative rake
•Zero rake
•All of these
Answer. All of these
45. The grit size of abrasive particles used in grinding wheels is generally specified by………….
•Hardness number
•Size of wheel
•Hardness of abrasive
•Mesh number
Answer. Mesh number
•Depth of cut
•Cutting speed
•Feed
•Rake angle of the troll
Answer: Cutting speed
•Lead
•Pitch
•Turn
•Crest
Answer. pitch
48. To remove maximum amount of material per minute with same trailer life…………..
•The depth of cut should be increased
•The cutting speed
should be decreased
•The cutting speed should be increased
Answer. The depth of cut should be increased
49. What is the melting point of filler metal in bracing?
•Less than 420°C
•More than 420°C
•Less than 520°C
•More than 520°C
Answer. More than 420°C
50. To grind soft material ……. is used.
•Coarse grained grinding wheel
•Fine grained grinding wheel
•Medium grained grinding wheel
•None of these
Answer. Coarse grained grinding wheel
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