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JSPM’s Bhivarabai Sawant Instiute of Technology & Research, Wagholi, Pune 412207 DEPARTMENT OF MECHANCIAL ENGINEERING

Metrology & Quality Control MCQ Which of the following is not true for autocollimator? A. Contact measurement B. Use for small tilts C. High sensitivity D. Used to determine parallelism ANSWER: A Which of the following represents the quality of straightness in precision engineering? A. Spirit level B. Straight edge C. Autocollimator D. Dial indicator ANSWER: B For which surfaces, spirit level is used for testing straightness? A. Both horizontal and vertical surfaces B. Vertical surfaces C. In any plane D. Horizontal surfaces ANSWER: D What are the requirements for the measurement of flatness using light? A. Monochromatic light and a pair of optical flats B. Dichromatic light and sets of optical flats C. White light and a pair of optical flats D. Monochromatic light and sets of optical flats ANSWER: D Up to which angle sine bars can measure the angles? A. 45 degree B. 60 degree C. 90 degree D. 120 degree ANSWER: A What is sine centre? A. Centre of sine bar B. Sine bar with block holding centres C. Sine bar with hole in centre D. Sine bar with hollow rod in centre ANSWER: B Which of the following is generally used to calibrate slip gauges? A. Micrometer B. Collimator

C. Interferometer D. Gap gauge ANSWER: C What is meant by roughness? A. Minute succession of hills of different height B. Minute succession of valleys and hills of different height and varied spacing C. Minute succession of valleys and hills of same height and same gap D. Minute succession of valleys of different depth ANSWER: B Which of the following parameter is important for specifying surface roughness? A. Size of irregularity B. Spacing of irregularity C. Height of irregularities D. Height, spacing and form of irregularities ANSWER: D Which of the following is the best for the examination of surface finish? A. Touch inspection B. Visual inspection C. Scratch inspection D. Microscopic inspection ANSWER: D Which of the following is true for the use of dial indicators? A. Skilled labour is necessary B. Useful for quantity control in inspection room C. Useful for quality control in inspection room D. Considerable practice is required before use ANSWER: C What is the range of dial indicators? A. 1 mm B. 5 mm C. 7 mm D. 10 mm ANSWER: D Which of the following is true for plunger used in dial indicator? A. It should never be greased or oil B. It should be greased monthly C. It should be oil or greased after every use D. It should be oiled weekly ANSWER: A Which of the following is not true for autocollimators? A. Has an infinity telescope B. Has an autocollimator C. For smaller angle it is not accurate D. Very high sensitivity ANSWER: C In what direction the parallelism of the main spindle to saddle movement is checked? A V i l di i

B. Horizontal direction C. Both vertical and horizontal direction D. At an angle ANSWER: C Which type of CMM is most suited for large heavy workpieces? A. Cantilever type B. Bridge type C. Horizontal boring mill type D. Floating bridge type ANSWER: C What precise movement does CMM have? A. Precise movement in x coordinate B. Precise movement in x and y coordinates C. Precise movement in y and z coordinates D. Precise movement in x, y and z coordinates ANSWER: D Which of the following machine is used for rolling tests? A. Parkson gear tester B. Tooth caliper C. Base pitch measuring instrument D. Involute profile testing machine ANSWER: A Which of the following represents the quality of straightness in precision engineering? A. Spirit level B. Straight edge C. Autocollimator D. Dial indicator ANSWER: B What is the advantage of mechanical comparator over others? A. Less moving parts B. No need of external supply C. No error due to parallax D. Large range of instrument ANSWER: B From which category ‘Sigma comparator’ belongs? A. Optical comparator B. Mechanical comparator C. Mechanical-optical comparator D. Pneumatic comparator ANSWER: B What is the principle of ‘The Johansson Mikrokator’? A. Button spinning on a loop of string B. Principle of interference C. Optical magnification D. Principle of transformer ANSWER: A Whi h f h f ll

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A. Independent of operator skill B. Loss of accuracy due to gauge wear C. Speedy operation D. Total life cost is less ANSWER: B Which principle is related to Gauge design? A. Rankin principle B. Position principle C. Taylor’s principle D. Carnot Principle ANSWER: C Why tolerances are given to the parts? A. Because it’s impossible to make perfect settings B. To reduce weight of the component C. To reduce cost of the assembly D. To reduce amount of material used ANSWER: B Which of the following is not a line standard? A. Yard B. Meter C. Precision scale D. Length bar ANSWER: D How many divisions are graduated on thimble? A. 20 B. 25 C. 45 D. 50 ANSWER: D What is the least count of a micrometer? A. 0.01 mm B. 0.02 mm C. 0.1 mm D. 0.2 mm ANSWER: A What is the use of Spirit Levels? A. Angular measurements only B. Static leveling only C. Static leveling of equipment and angular measurement D. Finding roundness of rotating parts ANSWER: C What is the angle between the two surfaces of an angle plate? A. 45 degree B. 120 degree C. 90 degree D. 180 degree ANSWER: C...