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MCQs

Total Questions : 364 | Page 19 of 37 pages
Question 181. 7. Inside and outside diameters of a thin tube are to be measured. Only one of the following tools is to be selected. Which one would you choose.
  1.    Inside caliper
  2.    Vernier caliper.
  3.    Trammel
  4.    Odd-leg caliper
 Discuss Question
Answer: Option B. -> Vernier caliper.
Question 182. 1. On a triple thread screw
  1.    Lead = pitch
  2.    Lead = 3 pitch
  3.    Lead = pitch
  4.    Lead = 9 pitch
 Discuss Question
Answer: Option B. -> Lead = 3 pitch
Question 183. 3. The method of fractional coincidences in interferometry techniques is used for
  1.    Measurement of end gauges
  2.    Flatness of surface
  3.    Linear displacement measurements
  4.    Convexity/concavity of surfaces
 Discuss Question
Answer: Option A. -> Measurement of end gauges
Question 184. 4. An optical gauge works on the principle of
  1.    Reflection of light rays
  2.    Polarisation of light rays
  3.    Interference of light rays
  4.    Refraction of light rays
 Discuss Question
Answer: Option C. -> Interference of light rays
Question 185. 9. A sine bar is used to measure
  1.    Surface roughness
  2.    Gear profiles
  3.    Internal tapers
  4.    External tapers
 Discuss Question
Answer: Option D. -> External tapers
Question 186. 8. During the gear tooth cutting operation the undercutting may occur, due to the corners of the cutter biting into the true involute curve on the flank of the tooth. This is called interference. It can be avoided by
  1.    Increasing the addendum on the pinion and reducing on the gear wheel
  2.    Increasing the addendum on both pinion and gear wheel
  3.    Reducing the addendum on both pinion and gear wheel
  4.    Reducing the addendum on the pinion and increasing on the gear wheel
 Discuss Question
Answer: Option A. -> Increasing the addendum on the pinion and reducing on the gear wheel
Question 187. 6. The pitch circle raidus rp and base circle radius rb of a gear are related by the following relationship (a = pressure angle)
  1.    Rb= rp cos a (b) rb? cos a
  2.    (c) rb = rp sin a (d) rb = rp tan a (e) rb= r, (tan ? a).
  3.    18.224. The undercutting in case of 14-1 degree full depth involute teeth occurs when the number of teeth is less than
  4.    (a) 10
 Discuss Question
Answer: Option A. -> Rb= rp cos a (b) rb? cos a
Question 188. 7. The undercutting in case of 14-1 degree full depth involute teeth occurs when the number of teeth is less than
  1.    10
  2.    32
  3.    18
  4.    25
 Discuss Question
Answer: Option B. -> 32
Question 189. 5. Involute fnnction of a gear is defmed as
  1.    (cos a ? a) radians
  2.    (sin a ? a) radians
  3.    (tan a ? a) radians
  4.    (cot a ? a) radians
 Discuss Question
Answer: Option C. -> (tan a ? a) radians
Question 190. 0. The normal chordal tooth thickness of a gear is the shortest distance from the
  1.    Tooth crest to the point of the chord
  2.    Tooth crest to the mid point of the chord
  3.    Mid point of the constant chord to the tip of the tooth
  4.    From the tooth crest to any point on the chord
 Discuss Question
Answer: Option B. -> Tooth crest to the mid point of the chord

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