CENTRAL INSTITUTE OF PLASTICS ENGINEERING & TECHNOLOGY
Question Bank
3 MARK --- QUESTION
4/5 MARK ----QUESTION
COURSE : DPMT
SEMESTER: 3rd semester
SUBJECT : Engineering Metrology
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1. _______________is the repeatability of a measuring process
2. B.H.N. Stands for ____________________
3. The two slip gauges in precision measurements are joined by _______________
4. _______________is the field of knowledge dealing with the problems of measurements
5. All the operations for the purpose of determining the values of the errors of a measuring instrument are called __________________
6. Spirit levels are used for measuring ________________________
7. The accuracy of micrometers, calipers, dial indicators can be checked by a _______________
8. CMM Stands for _____________________
9. Least count of Vernier caliper _______________
10. A clinometer is also known as ____________
11. RMS Stands for _________________
12. A _______________is used as a mechanical comparator
13. Interferometer are optical instruments used for measuring __________________
14. OPP stands for ___________________
15. The comparators are generally used for _______________measurements.
16. The toolmaker’s microscope is an _____________measurement machine.
17. “GO” and “NO GO” gauges must fulfill _____________Principle.
18. The comparator should at least be able to record variations of_______________.
19. Reed comparator is a _______________comparator.
20. _____________comparator has got a bold scale and large indicator pointer.
21. The scale in generally not uniform in _____________comparators.
22. Optical comparators has very high ________________
23. BIS Stands for __________________
24. For general use the measuring tip of a comparator should be
a) Flat b) Spherical c) Conical d) Concave
25. ___________________is grade of slip gauge in suitable for workshop
a) Grade 0 b) Grade 00 c) Grade 2 d) Grade 1
26. Light source used in interferometer is
a) Helium b) Hydrogen c) krypton d) all the above
27. Which one of the following is the least accurate measuring device
a) Airgauge b) Optical projecter c) Micro Meter d) Steel scale
28. The least count of a micrometer
a) 0.5 mm b ) 0.01mm c) 0.02mm d) 0.001mm
29. The combination set can be used to ______________
a) Check angular surface b) draw circles & arcs c) scribe line d) all of these
30. Millimeter scale in a micrometer is marked on
a) Barrel b) Thimble c) Anvil d) Ratchet
31. Optical flats are used in conjunction with
a) Angular Measurement b) Surface parallelism c ) surface profile d) Interferometer measurements
32. _____________is used for measuring flatness
a) Profile projector b) CMM c) Tool makers microscope d) Interferometer
33. According to Indian standards, the slip gauges according to accuracy are graded into following categories
a) 2 b) 3 c) 4 d) 6
34. Which of the following can be used to scribe line parallel to the edges of a part
a) Vernier caliper b) Screw gauge c) Divider d) Hermaphrodite caliper
35. A feeler gauge is used to check
a) Radius b) Screw pitch c) Surface roughness d) Thickness of clearances
36. Optical flats are made of
a) Quartz b) Glass c) Plastic d) silicon
37. A sine bar is specified by
a) Its total length b) the centre distance between the two rollers
c) The size of rollers d) Weight of sine bar
38. The number of slip gauges in set are
a) 87 b) 45 c) 103 d) 31
39. Profile of a gear tooth can be checked by
a) Sinebar b) Bench micrometer c ) Optical projector d) Slip gauge
40. The basic unit in angular measurement is
a) Degree b) Minute c) Second d) Right angle
41. Which of the following is not provided on Combination set
a) Centre head b) Protractor head c) Vernier scale d) Spirit level
42. A comparator for its working depends on
a) Accurately calibrated scale b) Comparison with standard such as slip gauges
c) Accurately micrometer gauge d) optical devices
43. Surface roughness on a drawing is represented by
a) Triangle b) Circles c) Squares d) rectangle
44. One micron is equal to
a) 1mm b) 0.1mm c) 0.01mm d) 0.001mm
45. Which of the following is not the angle measuring device?
a) Angle plate b) Sine bar c) Bevel protractor d) Angle Gauge
46. Straight edges are used to measure
a) Parallelism b) Flatness c) Circularity d) Straight length of parts
47. Bevel protractor is used for
a) Angular measurements b) Linear measurements
c) height measurements d) flatness measurement
48. Autocollimator is used for
a) Parallelism measurement b) Straightness measurement
c) flatness measurement d) angular measurement
49. Angle dekkor is another type of
a) Auto collimator b) Optical Square c) Clinometer d) angle gauge
50. The following is not used to measure angles
a) Bevel protractor b) Calibrated Levels c) Clinometers d) Optical flats
51. “GO” and “NO GO” gauge is a type of
a) Plug gauge b) Slip gauge c) Ring gauge d) Limit gauge
52. The following is not a type of comparator
a) Electrical b) Pneumatic c) Optical d) Hydraulic
53. Optical gauge works on the principle of
a) Reflection b) Refraction c) Interference of light rays d) polarization
54. The degree of closeness of the measured value of a certain quantity with its true value is known as
a) accuracy b) precisionn c) standard d) sensitivity
55. Error of Measurement
a) True Value – Measured value b) Precision – True value
c) Measured value – Precision d) none of the above.
56. The following is an internationally recognized and accepted unit system
a) MKS b) FPS c) SI d ) All of the above.
57. The following is a line standard of measurement
a) Measuring tape b) slip gauge c) micrometer d) End bars
58. The following is used to check the diameters of holes
a) Plug gauge b) ring gauge c) Slip gauge d) Standard screw pitch gauge
59. Which of the following is not a type of direct measuring measurement?
a) Micrometer b) Vernier caliper c) Divider d) all the above
60. Johansson mickrocator is a type of
a) Mechanical optical comparator b) Mechanical comparator
(c) Optical comparator d) Electrical comparator
61. Engineers parallels are available
a) Solid type b) Box type c) Adjustable type d) all of the above.
62. Combination set the squaring and scale cube used for
a) Height measurement b) Depth measurement c) Both of above d) none of all
63. Which type of comparator changes its magnification, when distance between cross strip hinge and knife edge is varied?
a) Johnson mickrocator b) solex pneumatic comparator c) projector comparator d) sigma comparator
64. Which of the following instrument is most accurate
a) Mechanical comparator b) optical projector c) slip gauge d) vertical caliper
65. Which of the following errors are regularly repetitive in nature?
a) Systematic errors b) Random errors c) Illegitimate errors d) Controllable errors
66. A surface gauge is used for
a) Leveling the surface plate b) Checking the surface finish
c) Laying out the work accurately d) Finding the depth of the surface
67. External taper can be accurately measured with the help of
a) Sine bar and slip gauges b) Dividing head c) Combination set d) Clinometer
68. Standards to be used for reference purpose in Laboratories and workshops are referred to as
a) Primary standards b) Secondary standards c) Tertiary standards d) Working standards
69. The following type of gauge has gauging sections combined on one end
a) Combination gauge b) Limit gauge c) Fixed gauge d) Progressive gauge
70. Clinometer is related with
a) Engineers parallels b) Spirit level c) Angle Gauges d) sine bar
71. Taylor’s principle is concerned with
a) Pneumatic comparators b) Gauging measurements
c) Angular measurements d) Roundness measurements
72. Clinometer is used for
a) Angular measurement b) Linear measurement
c) Bore measurement d) Level of flat surfaces.
73. Measuring accuracy of Vernier bevel protractor
a) 5 Minutes b) 2 Minutes c) 10 Minutes d) 1 Minute
74. Measuring accuracy of sine bar
a) 2 seconds b) 3 seconds c) 5 seconds d) 1 second
75. A work is usually required to be held in a vertical position for laying out for this purpose it is clamped to
a) Surface Plat b) an angle Plate c ) a V Block d) Engineers square
76. Element of the indicating device carrying the scale is called
a) dial b) housing c) Index d) Frame
77. The term traceability in engineering metrology is concerned with
a) Measuring Machines b) Optical Instruments c) Standards d) Limits and fits
78. Sine bar is not preferred for measuring angle more than 45 degree – say True or False
79. The various roughness grade number N1 to N24 in 5 groups are specified as under by BIS – Say True or False
80. As per Taylor’s principle gauges are made to check the minimum metal conditions say True or False
81. V-block is used in the workshop to check the dimension of oval job – say True or False
82. V block also be used to support rectangular components at 45 ° to the datum surface say True of false
83. Universal surface gauge instrument used in non – precision measurements. say True of false
84. Feeler gauges are used to measure the width of the gap between two parallel flat faces say True of false
85. Screw pitch gauge is used for measuring (or) checking the pitch of internal threaded component only. Say True of false
86. In type A Vernier caliper the jaws are provided on both sides for external & internal measurements
Say True or false
87. Error is the difference between the indicated and actual value of the measured say True or false
88. Slip gauges are square blocks say True or false
89. Universal bevel protractor, the blade cannot be rotated to measure any angles say True or false
90. Least count of Vernier bevel protractor is 5 minutes say True or false
91. Autocollimator is used for the measurement of small angular differences say True or false
92. Sigma comparator is a type of mechanical comparator say True or False
93. Mechanical comparators are compact and easy to handle. say True or False
94. Slip gauges are rectangular block say True or False
95. Engineers parallel available in three types. say True or False
96. A spirit level consists of a sealed glass tube say True or False
97. Sine bar based on the laws of Trigonometry say True of False
98. Solex Pneumatic Comparator has very high magnification capacity - say True of False
99. CMM is used for checking and measuring various gauges and fixtures- say True of False
100. Which of these is not a type of micrometer
a) outside b) inside c) height d) depth
101. A ___________ consists of a hardened, precision ground body with two precision ground cylinders
fixed at the ends.
a) vernier caliper b) micrometer c) spirit level d) sine bar
102. Sine bar is used in conjunction with slip gauges for precise ______ measurement
a) height b) angular c) distance d) depth
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