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What is the effect of temperature variation on the measurement? This question has 0 answers so far.
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Explain the principle of alignment as applied to measuring instruments and machine tools. This question has 0 answers so far.
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If in a surface roughness measurement test, the height of 15 successive peaks and valleys measured from datum are: 43, 28, 38,15, 25, 36, 18, 25, 20, 34, 42, 19, 37, 22, 36. If these measurement were made over a length of 25mm, determine the CLA and RMS values of the surface. This question has 0 answers so far.
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What is the effect upon the work-piece, if a lathe tail-stock centre line is parallel to but slightly below the head stock spindle axis. This question has 0 answers so far.
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At what angle to the optical flat, the fringe pattern should be observed and why? This question has 0 answers so far.
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What are the advantages of laser as a light source in interferometric measurement? Explain the formation of interference fringes, when the light falls on an optical flat resting on a lapped surface? This question has 0 answers so far.
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Explain what is meant by constant chord calliper settings? Calculate the chord length and its distance below the tooth tip for a gear of module 3mm and 20° pressure angle. This question has 0 answers so far.
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What are the various elements of a spur gear which need to be inspected for accuracy? Name the instruments required in the inspection of these elements with their expected accuracies. This question has 0 answers so far.
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In measuring the thread angle of a standard metric thread the diameters measured over the wires of 0.750 and 1.500 are 19.50 and 21.75mm respectively. Find the angle of the thread and the possible error in the measurement if the diameters of the wires are certified to an accuracy of within one micron and each measurement over the wires is having a possible error of 0.01mm. This question has 0 answers so far.
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Explain the Three Wire Method of measuring effective diameter of a screw thread. This question has 0 answers so far.
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A 120mm diameter shaft has light parallel side splines. Describe how would you check the width of the splines, the angular spacing and their parallelism with the shaft axis. This question has 0 answers so far.
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Describe the working principle of optical comparator. This question has 0 answers so far.
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How can the sensitivity of a pneumatic comparator be changed? This question has 0 answers so far.
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What are essential requirements of a good comparator? How have these features been achieved in Sigma Mechanical Comparator (SMC)? This question has 0 answers so far.
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Define and explain with an example the Taylor's principle of limit gauges. This question has 0 answers so far.
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What are the possible sources of error in measurement? wnicn types of error can be avoided during precision measurements? This question has 0 answers so far.
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Why parallel light must be used when projecting cylindrical objects in a projector? This question has 0 answers so far.
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Distinguish between Primary, Secondary, Tertiary and working standards of length. This question has 0 answers so far.
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Differentiate between the Electrical and Mechanical comparator giving sketches wherever necessary. This question has 0 answers so far.
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Differentiate between the GO' and 'NO GO' type plug gauges. giving sketches wherever necessary. This question has 0 answers so far.
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Differentiate between the Accuracy, precision and sensitivity of an instrument giving sketches wherever necessary. This question has 0 answers so far.
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Differentiate between the Hole basis system and shaft basis system and state which systemis usually preferred giving sketches wherever necessary. This question has 0 answers so far.
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Differentiate between the Repeatability and Reproducability of measurements giving sketches wherever necessary. This question has 0 answers so far.
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Explain how "progressive pitch error arises in screw threads? This question has 0 answers so far.
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What are various types of fits and state how a fit is designated? This question has 0 answers so far.
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Name only the various alignment tests that can be performed on lathes. This question has 0 answers so far.
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Explain giving reason if a standard gauge can be used to checkan interference fit? This question has 0 answers so far.
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Select the size of angle gauges required to build 32051'24". This question has 0 answers so far.
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What do you mean by 'cosine error? Give examples. This question has 0 answers so far.
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How is parallax error taken care of sigma mechanical incomparator? This question has 0 answers so far.
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Why monochromatic light is used for interferometry work and not the white light? This question has 0 answers so far.