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MCQs

Total Questions : 364 | Page 14 of 37 pages
Question 131. 9. Airy points of support are
  1.    0.577 L apart
  2.    0.554 L apart
  3.    0.5 L apart
  4.    0.58 L apart
 Discuss Question
Answer: Option A. -> 0.577 L apart
Question 132. 2. Precision polygons are calibrated from first principles using
  1.    One autocollimator
  2.    Two autocollimators
  3.    Three autocollimators
  4.    Two precision spirit levels
 Discuss Question
Answer: Option B. -> Two autocollimators
Question 133. 3. The fact that how closely the instrument reading folloVis the measured variables is termed as
  1.    Fidelity
  2.    Accuracy
  3.    Threshold sensitivity
  4.    Precision
 Discuss Question
Answer: Option A. -> Fidelity
Question 134. 5. Optical square is
  1.    Engineer's square having stock and blade set at 900
  2.    A constant deviation prism having the angle of deviation between the incident ray and reflected ray, equal to 90?
  3.    A constant deviation prism having the angle of deviation between the incident ray and reflected ray, equal to 45?
  4.    Used to produce interference fringes
 Discuss Question
Answer: Option B. -> A constant deviation prism having the angle of deviation between the incident ray and reflected ray, equal to 90?
Question 135. 4. Which of the following methods is not used for testing straightness
  1.    Spirit level method
  2.    Autocollimator
  3.    Interference method
  4.    Beam comparator
 Discuss Question
Answer: Option C. -> Interference method
Question 136. 6. In a sine bar the standard length is measured from
  1.    Edge to edge
  2.    Between inner circumference of two rollers
  3.    Between outer circumference of two rollers
  4.    Between the centres of two rollers
 Discuss Question
Answer: Option D. -> Between the centres of two rollers
Question 137. 8. Polygons in metrology are concerned with
  1.    Method of circular dividing et
  2.    Testing of parallelism
  3.    Testing of circularity
  4.    Interferrometry measurements
 Discuss Question
Answer: Option A. -> Method of circular dividing et
Question 138. 0. Bevel protractor is used for
  1.    Angular measurements
  2.    Linear measurements
  3.    Height measurements
  4.    Flatness measurement
 Discuss Question
Answer: Option A. -> Angular measurements
Question 139. 9. the long straight edges are supported at two points for minimum deflection at centre. The distance between supports compared to the length of straight edge should be
  1.    0.5
  2.    0.554
  3.    0.577
  4.    0.6
 Discuss Question
Answer: Option B. -> 0.554
Question 140. 7. Electronic level instrument is a replacement for
  1.    Vernier depth gauge
  2.    Spirit level.
  3.    Auto-collimator
  4.    Angle dekkor
 Discuss Question
Answer: Option B. -> Spirit level.

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