Metrology-and-inspection Questions Set 4:
What are the peaks and valleys of surface irregularities called?
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The diameter of which of the following objects cannot be measured using a telescopic gauge?
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What causes pitch errors in threads?
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What is the property of a mechanical system where a part can be moved in one direction without moving the other part?
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In an N.P.L. type of flatness interferometer, what type of light source is used?
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An optical flat is used to measure the flatness of a surface by using the principle of
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If the voltmeter has an input impedance comparable to the output impedance of the circuit, what type of error will occur?
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A ball 'A' is at a height of 26 mm from the horizontal ground surface and ball 'B' is at 16 mm. If the diameters of balls A and B are 10 mm and 14 mm respectively, then find the taper angle.
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What is Quality Assurance (QA)?
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A voltage measuring device is calibrated from 0 to 90 V. It has a uniform scale with 50 divisions. One-fifth of a scale division can be read with certainty. Determine the resolution of the measuring device.
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