MCQs on Grinding
1.Grinding process is mainly used to____________.
(i) Finishing
(ii) Shouldering
(iii) Knurling
(iv) Centering
2.The ability of the grains to manufacture and expose new sharp edge is known as________.
(i) Malleability
(ii) Tough
(iii) Friability
(iv) Abrasive buffing
3.Which of the following natural abrasive is harder?
(i) Sand stone
(ii) Corundum
(iii) Diamond
(iv) Emery
4.The natural aluminium oxide is_________.
(i) Sand stone
(ii) Emery
(iii) Corundum
(iv) Both Sand stone & Corundum
5.A bond is_____________substance that is employed to hold abrasive grains together.
(i) An adhesive
(ii) A cohesive
(iii) A coherent
(iv) None
6.Clay or feldspar based bond material is known as________.
(i) Vitrified bond
(ii) Resinoid bond or Bakelite
(iii) Oxy-chloride bond
(iv) Rubber bond
7.Bonds may be used with__________or aluminium oxide.
(i) Silicon carbide
(ii) Aluminium oxide
(iii) Both Silicon carbide & Aluminium oxide
(iv) Either Silicon carbide & Aluminium oxide
8.Shellac bonded wheels are also known as__________.
(i) Flexible bonded wheel
(ii) Elastic bonded wheels
(iii) Natural bonded wheels
(iv) None
9.In marking system, the second letter from left indicates___________.
(i) Grade
(ii) Manufacturer’s symbol
(iii) Type of abrasive
(iv) Structure
10. The term grade of a grinding wheel refers the hardness of____________.
(i) Grains
(ii) Bond between grains & adhesives
(iii) Both Grains & Bond between grains & adhesive
(iv) None
11.Hard grade wheels are recommended for____________.
(i) Hard materials
(ii) Soft materials
(iii) Either Hard materials or Soft materials
(iv) None
12.Which shape of grinding wheel is used in tool room?
(i) Straight
(ii) Cup
(iii) Dish
(iv) Cylindrical
13.For greater contact area__________wheels are used.
(i) Softer
(ii) Harder
(iii) Either Softer or Harder
(iv) None
14. Silicon carbide wheels are used for___________.
(i) High compressive strength
(ii) Low compressive strength
(iii) High tensile strength
(iv) Low tensile strength
15.External cylindrical grinding is used for grinding______________.
(i) External cylindrical surfaces
(ii) Internal cylindrical surfaces
(iii) Both External & Internal cylindrical surfaces
(iv) None
16.In___________grinding the grinding wheel is shaped to match the surface to be ground.
(i) External
(ii) Internal
(iii) Surface
(iv) Form
17.Long slender bars are finished by___________grinding.
(i) Centerless
(ii) Internal
(iii) Surface
(iv) Form
18.Surface grinding are used to produces_________.
(i) Profile surfaces
(ii) Curve surface
(iii) Flat surfaces
(iv) None
19.In plain cylindrical grinding machines, the lower table gives_________.
(i) Feed motion
(ii) Rotary motion
(iii) Transverse motion
(iv) None
20.Use of tail stock in cylindrical grinding machine is_____________.
(i) To drive the work piece
(ii) To give feed to the wheel head
(iii) Speed of grinding wheel
(iv) To support the other end of the work piece
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