Lakshya Education MCQs

Question: The relief or clearance at the cutting edge of a flat drill varies from
Options:
A. 3° to 8°
B. 20° to 30°
C. 60° to 90°
D. 90° to 120°
Answer: Option A

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Question 1. The cutting angle of a flat drill varies from
  1.     3° to 8°
  2.     20° to 30°
  3.     60° to 90°
  4.     90° to 120°
Answer: Option D
Question 2. Low helix angle drills are preferred for drilling holes in
  1.     Plastics
  2.     Copper
  3.     Cast steel
  4.     Carbon steel
Answer: Option A
Question 3. The hardness of a grinding wheel is determined by the
  1.     Hardness of abrasive grains
  2.     Ability of the bond to retain abrasives
  3.     Hardness of the bond
  4.     Ability of the grinding wheel to penetrate the work piece
Answer: Option B
Question 4. The hardness of a grinding wheel is determined by the
  1.     Hardness of abrasive grains
  2.     Ability of the bond to retain abrasives
  3.     Hardness of the bond
  4.     Ability of the grinding wheel to penetrate the work piece
Answer: Option B
Question 5. Low helix angle drills are preferred for drilling holes in
  1.     Plastics
  2.     Copper
  3.     Cast steel
  4.     Carbon steel
Answer: Option A
Question 6. Low helix angle drills are preferred for drilling holes in
  1.     Plastics
  2.     Copper
  3.     Cast steel
  4.     Carbon steel
Answer: Option A

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