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MCQs

Total Questions : 364 | Page 9 of 37 pages
Question 81. . Random errors follow the following distribution
  1.    Claussian
  2.    Hyperbolic
  3.    Parabolic
  4.    T-student
 Discuss Question
Answer: Option A. -> Claussian
Question 82. . A comparator for its working depends on
  1.    Accurately calibrated scale
  2.    Comparison with standard such as slip gauges
  3.    Accurate micrometer gauge
  4.    Optical devices
 Discuss Question
Answer: Option B. -> Comparison with standard such as slip gauges
Question 83. . Pick up the wrong statement :
  1.    Accuracy of an instrument is closeness to the true dimension
  2.    Precision represents the degree of repetitiveness.
  3.    Sensitivity refers to minimum change in value that the instrument can reliably indicate.
  4.    As the sensitivity of an instrument increase, its range of measurement also increases.
 Discuss Question
Answer: Option D. -> As the sensitivity of an instrument increase, its range of measurement also increases.
Question 84. . Fiducial indicators contain
  1.    Calibrated scale
  2.    A single index mark
  3.    Micrometer screw movement
  4.    Optical head
 Discuss Question
Answer: Option B. -> A single index mark
Question 85. . The thickness of oil film at the surface of slip gauges is of the order of
  1.    .005 micron
  2.    .1 micron
  3.    1 micron
  4.    10 microns
 Discuss Question
Answer: Option A. -> .005 micron
Question 86. . Precision is
  1.    The repeatability of a measuring process
  2.    Agreement of the result of a measurement with the true value of the measured quantity
  3.    The ability of a measuring device to detect small differences in a quantity being measured the ability of an instrument to reproduce same reading under identical conditions
  4.    (e) error of judgment in reading an observation.
 Discuss Question
Answer: Option A. -> The repeatability of a measuring process
Question 87. . In the case of high precision surface plates of diameter upto 200 mm, the working surface should lie between two parallel planes, whose maximum distance apart is
  1.    0.005 mm
  2.    0.0005 mm
  3.    0.05 mm
  4.    0.5 mm
 Discuss Question
Answer: Option B. -> 0.0005 mm
Question 88. . Which of the following is not the accessory of slip gauges :
  1.    Scribing and centre points
  2.    Measuring jaws
  3.    Holder
  4.    Calipers
 Discuss Question
Answer: Option D. -> Calipers
Question 89. . Pick up the wrong statement. Surface plates are usually made of granite because of following advantages
  1.    Because of long period of time for relaxing, it is free from built in residual stresses. There is no corrosion effect also.
  2.    It enables the phenomenon of wringing flat surfaces over it.
  3.    If a tool or workpiece drops accidently over its surface, residual stresses are not induced
  4.    It simply powders somewhat at the point of impact by falling object
 Discuss Question
Answer: Option B. -> It enables the phenomenon of wringing flat surfaces over it.
Question 90. . Which one of the following instruments is the most accurate
  1.    Steel scale
  2.    Optical projector.
  3.    Vernier caliper
  4.    Vernier dial gauge
 Discuss Question
Answer: Option B. -> Optical projector.

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