Advanced Manufacturing Engineering Questions & Answers on “Grinding-2”.
1. Which of the following grinding wheel specified in ISO designation will represent Vitrified bond?
a) Z 46 K 5 E 17
b) C 600 K 5 B 17
c) C 8 K 5 R 17
d) A 80 K 5 V 17
Answer: d
Clarification: Fifth place of ISO designation of the grinding wheel represents a type of bond and “V” represents Vitrified bond type.
2. Grinding wheel specified as “C 8 K 5 R 17” in ISO designation. What is the type of bond present in grinding wheel?
a) Vitrified
b) Rubber
c) Shellac
d) Epoxy
Answer: b
Clarification: Fifth place of ISO designation of the grinding wheel represents a type of bond and “R” represents rubber.
3. Which of the following grinding wheel specified in ISO designation will represent Resin bond?
a) Z 46 K 5 E 17
b) C 600 K 5 B 17
c) C 8 K 5 R 17
d) A 80 K 5 V 17
Answer: b
Clarification: Fifth place of ISO designation of the grinding wheel represents the type of bond and “B” represents resin bond.
4. Which of the following grinding wheel specified in ISO designation will represent Shellac bond?
a) Z 46 K 5 E 17
b) C 600 K 5 B 17
c) C 8 K 5 R 17
d) A 80 K 5 V 17
Answer: a
Clarification: Fifth place of ISO designation of the grinding wheel represents a type of bond and “E” represents shellac.
5. Grinding wheel specified as “A 8 K 5 P 17” in ISO designation. What is the type of bond present in grinding wheel?
a) Vitrified
b) Rubber
c) Shellac
d) Epoxy
Answer: d
Clarification: Fifth place of ISO designation of the grinding wheel represents a type of bond and “P” represents rubber.
6. Which of the following will not have open structure?
a) A 46 K 5 B 17
b) C 600 K 8 B 17
c) C 8 K 5 9 17
d) A 80 K 10 B 17
Answer: a
Clarification: Fourth place of ISO designation of the grinding wheel represents Structure and “5” comes under dense structure.
7. Which of the following has open structure?
a) A 46 K 5 B 17
b) C 600 K 8 B 17
c) C 8 K 5 3 17
d) A 80 K 4 B 17
Answer: b
Clarification: Fourth place of ISO designation of the grinding wheel represents Structure and “8” comes under open structure.
8. A grinding wheel is specified as “C 10 K 8 R 17”. Which of the following is correct about this grinding wheel?
a) Very fine grains
b) Open structure
c) Aluminum oxide abrasive
d) Coarse grain
Answer: b
Clarification: Fourth place of ISO designation of the grinding wheel represents Structure and “8” comes under open structure.
9. A grinding wheel is specified as “A 5 K 5 R 17”. Which of the following is correct about this grinding wheel?
a) Very fine grains
b) Open structure
c) Aluminum oxide abrasive
d) Coarse grain
Answer: c
Clarification: First place of ISO designation of the grinding wheel represents grain type and “A” represents aluminum oxide.
10. A grinding wheel is specified as “C 5 K 5 R 17”. Which of the following is correct about this grinding wheel?
a) Very fine grains
b) Open structure
c) Rubber bond
d) Coarse grain
Answer: c
Clarification: Fifth place of ISO designation of the grinding wheel represents a type of bond and “R” represents rubber.
11. A grinding wheel is specified as “A 8 K 5 P 17”. Which of the following is correct about this grinding wheel?
a) Very fine grains
b) Open structure
c) Rubber bond
d) Coarse grain
Answer: d
Clarification: ‘8’ represents grain size, which is coarse.
12. Friability of grinding wheel is associated to
a) Hardness
b) Fracture
c) Size
d) None of the mentioned
Answer: b
Clarification: Friability is the ability to fracture under pressure so that when cutting edge become dull, the grain breaks off and exposes new grains which are sharp.
13. With time, grinding wheel starts rubbing work piece instead of cutting, due to a decrease in sharpness. This phenomenon is known as
a) Loading
b) Glazing
c) Dressing
d) Trueing
Answer: b
Clarification: Glazing occurs when grinding wheel starts rubbing work piece instead of cutting.
14. Loss in the sharpness of grinding wheel due to the presence of chips in gaps of grains is termed as
a) Loading
b) Glazing
c) Dressing
d) Trueing
Answer: a
Clarification: Loading decrease sharpness of grinding wheel, when foreign material comes in between free space of wheel.
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