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Metrology and Engineering Inspection Quiz

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Metrology and Engineering Inspection Quiz

shape Introduction

What is Metrology and Engineering Inspection? Metrology is the science of measurement or scientific study of measurement. It can sometimes include calibration of instruments, Programming the Coordinate measuring machine (CMM), and the use of various other precision measuring and inspection machines. Metrology and Engineering Inspection is an important topic in Mechanical Engineering subjects.
Metrology and Engineering Inspection Quiz chapter, is, exceedingly important for candidates preparing for RRB Junior Engineer Recruitment, SSC Junior Engineer Recruitment, GATE, UPSC (Civil services exam including IAS) and all Mechanical Engineering Exams and etc. In this article, candidates can find different types of questions & solutions related to the Metrology and Engineering Inspection topic. The article Metrology and Engineering Inspection Quiz, will assist the students understanding of the type of questions expected from the topic Metrology and Engineering Inspection.

shape Quiz

1. The case with which observations can be made accurately is called
    A. readability B. sensitivity C. accuracy D. reputability

Answer - Option A
2. Accuracy of measuring equipment is
    A. the closeness with which a measurement can be read directly from a measuring instrument B. a measure of how close the reading is to the true size C. the difference between measured value and actual value D. the smallest change in measure that can be measured

Answer - Option B
3. Errors are generally distributed in accordance with the Gaussian distribution is
    A. controllable errors B. calibration errors C. avoidable errors D. random errors

Answer - Option D
4. Figure given below shows the dimension obtained on a component by a certain instrument
SPLessons

This instrument is
    A. precise but not accurate B. accurate but not precise C. neither precise nor accurate D. sensitive.

Answer - Option A
5. Tolerance are specified
    A. to obtain desired fits B. because it is not possible to manufacture in size exactly C. to obtain high accuracy D. to have proper allowance

Answer - Option B
6. The fact that how closely the instrument reading follows the measured variables is called
    A. fidelity B. accuracy C. threshold sensitivity D. precision

Answer - Option A
7. Process capability of the machine tool is
    A. to produce maximum number of components in unit time B. equal to the mean value of component C. equal to the three times the standard deviation D. equal to six times the standard deviation

Answer - Option D
8. A bore 14.67 mm in a work piece can be measured by
    A. steel rule B. pneumatic gauges C. micrometer D. plug gauge

Answer - Option C
9. Scale sensitivity is defined as the ratio of
    A. change in scale reading to corresponding change in pointer deflection B. least reading of scale to range of scale C. least reading of scale to unit measurable quantity D. least count of scale to range of scale

Answer - Option A
10. A three-lobed part if checked on 60° V-block would provide magnification of the radial out-of-round characteristics
    A. 1 time B. 2 time C. 3 time D. 4 time

Answer - Option C
11. A five-lobed part, if gauged in the V-block would produce the magnification of the radial out-ofround characteristics
    A. 0 time B. 1 time C. 2 time D. 3 time

Answer - Option A
12. A master gauge is a/an
    A. new gauge B. international reference standard C. standard gauge for checking accuracy of gauges used on shop floors D. gauge used by experienced technicians

Answer - Option C
13. Expressing a dimension as 32.5/32.3 mm is the case of
    A. unilateral tolerance B. bilateral tolerance C. limiting dimensions D. none of these

Answer - Option C
14. Moire fringes are observed when
    A. an optical flat is placed over smooth surface B. a microscope is used to observe surface texture C. index grating is moved over scale grating D. white light is diffused through a prism

Answer - Option C
15. The surface roughness on a drawing is represented by
    A. circles B. squares C. zig-zag lines D. triangles

Answer - Option D
16. In interferometric methods, path difference between one bright band and the next is varied by
    A. half wave length B. two wave length C. one quarter wavelength D. two wave lengths

Answer - Option B
17. The ‘best size wire’ for measuring effective diameter of threads is of diameter
    A. [latex]\frac{p sec \theta}{2}[/latex] B. [latex]\frac{p cos \theta}{2}[/latex] C. [latex]\frac{p cos \theta}{4}[/latex] D. none of these

Answer - Option A
18. On a triple thread screw
    A. lead = pitch B. lead = 3 pitch C. lead = [latex]\frac{1}{}[/latex]pitch D. lead = 9 pitch

Answer - Option B
19. The method of fractional coincidences in interferometry techniques is used for
    A. measurement of end gauges B. flatness of surface C. linear displacement measurements D. surface roughness measurement

Answer - Option A
20. Autocollimator is used for
    A. parallelism measurement B. straightness measurement C. flatness measurement D. angular measurement

Answer - Option D
21. The pitch circle radius [latex]{r}_{p}[/latex] and base circle radius [latex]{r}_{b}[/latex] of a gear are related by the relationship ([latex]\alpha[/latex] = pressure angle)
    A. [latex]{r}_{b} = {r}_{p} cos\alpha[/latex] B. [latex]{r}_{b} = {r}_{p} sin \alpha[/latex] C. [latex]{r}_{b} = {r}_{p} tan\alpha[/latex] D. [latex]{r}_{b} = {r}_{p}(cos\alpha - \alpha)[/latex]

Answer - Option A
22. Systematic errors are
    A. randomly distributed B. regularly repetitive in nature C. distributed on both + ve and – ve sides of mean value D. unpredictable

Answer - Option B
23. The maximum amount by which the result differs from the true value is called
    A. correction B. discrepancy C. error D. accuracy

Answer - Option D
24. To inscribe lines parallel to the edges of a part, the instrument used is
    A. vernier calipers B. screw gauge C. hermaphrodite calipers D. combination set

Answer - Option C
25. Which of the following are not controllable errors?
    A. Calibration errors B. Environmental errors C. Avoidable errors D. Random errors

Answer - Option D
26. A scale whose graduation marks are in a discontinuous manner and are composed of aligned numbers indicating directly the numerical value of the quantity measured is called
    A. linear scale B. equidistant scale C. regular scale D. digital scale

Answer - Option D
27. The thread micrometer measures
    A. major diameter of the thread B. minor diameter of the thread C. effective diameter of the thread D. root diameter of the thread

Answer - Option C
28. V-block is used in the workshop to check
    A. roundness of a cylindrical work B. surface roughness C. taper on a job D. none of these

Answer - Option A
29. Repeat-ability of measuring equipment is
    A. the closeness with which a measurement can be read directly from a measuring instrument B. a measure of how close the reading is to the true size C. difference between measured value and actual value D. the capability to indicate the same reading again and again for a given measured

Answer - Option D
30. The purpose of ratchet screw in micrometer screw gauge is to
    A. lock a dimension B. impart blow motion C. maintain sufficient and uniform measuring pressure D. take care of wear of screw threads.

Answer - Option C
1. External taper can be accurately measured with the help of
    A. sine bar and slip gauge B. dividing head C. combination set D. clinometer

Answer - Option A
2. Stick micrometers are designed for measuring
    A. bore of cylinders B. longer external lengths C. cylindricity D. longer internal lengths

Answer - Option D
3. A sine bar is specified by
    A. its total length B. centre distance between the two rollers C. size of the rollers D. weight of sine bar

Answer - Option B
4. The number of slip gauges in a set are
    A. 87 B. 45 C. 103 D. 31

Answer - Option E
5. The essential requirement for accuracy of measurement with a sine bar is
    A. flatness of upper surface B. equality of size and roundness of rollers C. exact distance between roller axes and mutual parallelism. D. parallelism of rollers to upper surface and equality of axis distance as from surface E. all of these

Answer - Option E
6. In a sine bar the standard length is measured
    A. from edge to edge B. between inner circumferences of two rollers C. between outer circumference of two rollers D. between the centres of two rollers

Answer - Option D
7. Accuracy of setting a sine bar
    A. decreases appreciably with steep angle B. is poor for small angles C. is maximum when angle of measurement is 45ºC D. none of these

Answer - Option A
8. Figure below shows a case of error in relative location of surfaces. This case is for
SPLessons

    A. misalignment B. axial run-out C. radial run-out D. squareness error

Answer - Option C
9. The M-system and E-system in metrology are related with measurement of
    A. gears B. screw threads C. flatness D. surface finish

Answer - Option D
10. All the thread characteristics can be measured precisely with
    A. screw pitch gauge B. micrometer with V-anvil C. tool room microscope D. thread gauge

Answer - Option C
11. The advantage of vernier caliper over micro-meter is that it
    A. is easier and quicker to use B. is more accurate C. can be used to make both inside and outside measurements over a range of sizes D. all of these

Answer - Option C
12. In layout work, a pencil should not be used to draw lines on metal because
    A. it will wipe off easily B. the line will be too wide for accurate work C. lines will smudge and be difficult to see D. all of these

Answer - Option A
13. The basic unit in angular measurement is
    A. degree B. minute C. second D. right angle

Answer - Option D
14. Millimeter scale in a micrometer is marked on
    A. barrel B. thimble C. spindle D. anvil

Answer - Option A
15. Circular scale of the micrometer is marked on
    A. anvil B. barrel C. ratchet D. thimble

Answer - Option D
16. The following type of gauges has gauging sections combined on one end
    A. combination gauge B. limit gauge C. Go and No Go gauge D. progressive gauge

Answer - Option D
17. Accuracy is
    A. repeat-ability of a measuring process B. error of judgement in recording an observation C. ability of instrument to reproduce same reading under identical situations D. agreement of the result of a measurement with the true value of the measure quantity

Answer - Option D
18. The least accurate measuring device is
    A. air gauge B. micrometer screw gauge C. optical projector D. steel scale

Answer - Option D
19. A comparator for its working depends on
    A. accurately calibrated scale B. comparison with standard such as slip gauges C. accurate micrometer gauge D. optical devices

Answer - Option B
20. Precision is
    A. repeat-ability of a measuring process B. agreement of the result of a measurement with the true value of the measured quantity C. ability of an instrument to reproduce same reading under identical conditions D. all of these

Answer - Option A
21. Following figure shows the principle of
SPLessons

    A. trace-ability B. interchangeability C. matched fits D. selective assembly

Answer - Option D
22. Most accurate instrument is
    A. steel scale B. micrometer screw gauge C. vernier caliper D. optical projector

Answer - Option D
23. A plug of diameter d rests in an angle as shown in figure. An equation giving distance L in terms of d, H and [latex]\alpha[/latex] would be
SPLessons

    A. [latex]L = H tan \frac{\alpha}{2} + \frac{d}{2} tan (45 - \alpha)[/latex] B. [latex]L = H cot \frac{\alpha}{2} + \frac{d}{2} tan (45 - \frac{\alpha}{2})[/latex] C. [latex]L = H tan \frac{\alpha}{2} \frac{d}{2} tan (45 - \alpha)[/latex] D. None of these

Answer - Option C
24. Following figure shows the measurement of
SPLessons

    A. roundness B. radius of curvature C. cylindricity D. flatness

Answer - Option B
25. The radius of a pulley block is measured as shown in the figure is calculated by
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    A. [latex]R = \frac{l - d}{8d}[/latex] B. [latex]\frac{{(l - d)}^{2}}{4d}[/latex] C. [latex]\frac{{(l - d)}^{2}}{8d}[/latex] D. [latex]\frac{{(l - d)}^{2}}{2d}[/latex]

Answer - Option C
26. The radius of concave surface can be easily determined by a depth micrometer as shown in the figure. Radius of curvature R is equal to
SPLessons

    A. [latex]\frac{{d}^{2}}{8h} + \frac{h}{2}[/latex] B. [latex]\frac{{d}^{2}}{8h} - \frac{h}{2}[/latex] C. [latex]\frac{{d}^{2}}{4h} + h[/latex] D. [latex]\frac{{d}^{2}}{8h} + h[/latex]

Answer - Option A
27. The accessory of slip gauges is
    A. scribing and centre points B. measuring jaws C. holder D. base E. all of these

Answer - Option E
28. The lateral faces of slip gauges are at right angles correct to within
    A. [latex]\pm[/latex] 1 degree B. [latex]\pm[/latex] 30 minutes C. [latex]\pm[/latex] 10 minutes D. [latex]\pm[/latex] 1 minutes

Answer - Option C
29. According to accuracy, slip gauges are classified under which of the following number of accuracy classes
    A. 2 B. 3 C. 4 D. 5

Answer - Option D
30. A protector in slip gauges is provided to
    A. protect slip gauges when not is use B. take up all the wear when in use C. clean the slip gauges D. facilitate wringing of slip gauges

Answer - Option B
1. The ratio of the surface area A and the volume V of a cylinder of diameter d and length l is
    A. [latex]\frac{A}{V} = \frac{6d}{l}[/latex] B. [latex]\frac{A}{V} = \frac{4l}{d}[/latex] C. [latex]\frac{A}{V} = \frac{1 + d}{dl}[/latex] D. [latex]\frac{A}{V} = \frac{2d + 4l}{dl}[/latex]

Answer - Option D
2. The two slip gauges in precision measurement are jointed by
    A. assembling B. sliding C. adhesion D. wringing

Answer - Option D
3. Plug gauges are used to
    A. measure the diameter of the work pieces B. measure the diameter of the holes in the work pieces C. check diameter of the holes in the work pieces D. check length of holes in the work pieces

Answer - Option C
4. Term “Allowance” in limits and fits is usually referred to
    A. minimum clearance between shaft and hole B. maximum clearance between shaft and hole C. difference of tolerance of hole and shaft D. difference between maximum size and minimum size of the hole

Answer - Option A
5. The correct way of designating fit, is
    A. [latex]\frac{{H}_{g}}{{g}_{7}}[/latex] B. [latex]\frac{{g}_{7}}{{h}_{8}}[/latex] C. [latex]\frac{50{H}_{g}}{{g}_{7}}[/latex] D. [latex]\frac{{H}_{g}}{{g}_{7}} - 50[/latex]

Answer - Option C
6. Drilled holes and honed holes, could be designated by following grades respectively
    A. [latex]{H}_{5}, {H}_{11}[/latex] B. [latex]{H}_{6}, {H}_{10}[/latex] C. [latex]{H}_{8}, {H}_{6}[/latex] D. [latex]{H}_{10}, {H}_{5}[/latex]

Answer - Option D
7. Sensitivity of measuring equipment is
    A. closeness with which a measurement can be read directly from a measuring instrument B. a measure of how close the reading is to the true size C. difference between measured value and actual value D. the smallest change in measure and that can be measured

Answer - Option D
8. Expressing a dimension as [latex]{25.3}^{+0.05}[/latex] is the case of
    A. unilateral tolerance B. bilateral tolerance C. limiting dimensions D. all of these

Answer - Option B
9. Surface roughness on a drawing is represented by
    A. triangles B. circles C. squares D. rectangles

Answer - Option A
10. The diameter of finish turned shaft can best be checked with a
    A. combination set B. slip gauge C. height gauge D. micrometer screw gauge

Answer - Option D
11. Accurate centring of work mounted in an independent chunk can be determined by using a
    A. centre gauge B. height gauge C. dial indicator D. surface gauge

Answer - Option C
12. In limits and fits system, basic shaft system is one whose
    A. lower deviation is zero B. upper deviation is zero C. minimum clearance is zero D. maximum clearance is zero

Answer - Option B
13. To check the diameter a twist drill with a micrometer, the measurement must be taken across the
    A. margins of the drill B. flutes of the drill C. lips of the drill D. web of the drill

Answer - Option A
14. Expressing a dimension as [latex]{{18.3}_{-0.02}}^{+ 0.00}[/latex] mm is the case of
    A. unilateral tolerance B. bilateral tolerance C. limiting dimensions D. none of these

Answer - Option A
15. IS : 919 on limits and fits specifies which of the following numbers of grades of fundamental tolerances, and fundamental deviations respectively
    A. 25, 18 B. 25, 16 C. 18, 22 D. 18, 25

Answer - Option D
16. Basic shaft and basic hole are those whose upper deviations and lower deviations respectively are
    A. + ve, – ve B. – ve, + ve C. zero, zero D. none of these

Answer - Option C
17. The standard tolerance unit is equal to
    A. 0.45([latex]\sqrt [3]{D} [/latex]) + 0.001 D B. 0.45([latex]\sqrt [4]{D} [/latex]) + 0.001 D C. 0.45([latex]\sqrt [3]{D} [/latex]) + 0.01 D D. 0.45([latex]\sqrt [4]{D} [/latex]) + 0.01 D

where D is geometr ic means of the lower and upper diameters of a particular diameter step.
Answer - Option A
18. Eden-Rolt comparator is a popular instrument for the
    A. calibration of slip gauges B. absolute measurement of length of slip gauges C. measurement of flatness D. measurement of angles

Answer - Option A
19. It is desirable to handle the slip gauges with a cloth or chamois leather in order to
    A. avoid injury to hands B. protect the surfaces of slip gauges C. insulate them from the heat of the hand D. none of these

Answer - Option C
20. For grade IT 7, value of tolerance is equal to
    A. 8i B. 10 i C. 16 i D. 24 i

Answer - Option C
21. Planer gauge is used for
    A. testing flatness of surface B. adding to utility of measurements on surface plate C. angular measurement D. all of these

Answer - Option B
22. IS specifications specify vernier calipers as type A, B and C. This classification is based on
    A. accuracy B. least count C. range D. internal or external measurement and for marking purpose

Answer - Option D
23. The cross-section of straight edges up to 180 mm length is
    A. rectangular B. circular C. I-section D. elliptical

Answer - Option A
24. Optical micrometer is used to
    A. measure small linear displacements B. measure surface profiles C. measure surface roughness D. set very small displacement by rotating the glass block through relatively large angles

Answer - Option D
25. In precision polygon, a central hole and small holes are drilled through the thickness
    A. for mounting purposes B. to achieve high accuracy C. for ease of manufacture D. to make them light

Answer - Option A
1. Precision polygons are calibrated from first principles using
    A. one autocollimator B. two autocollimators C. three autocollimators D. two precision spirit levels

Answer - Option B
2. Bevel protractor is used for
    A. angular measurement B. linear measurement C. height measurement D. flatness measurement

Answer - Option D
3. Clinometer is related with
    A. Engineer’s parallels B. angle gauges C. spirit level D. bevel protractor

Answer - Option C
4. A comparator
    A. needs to be calibrated B. need not be calibrated C. contains a calibrated scale D. is highly accurate over its complete measuring range

Answer - Option A
5. The essential condition for inter -ferometry measurement is
    A. an air gap (a wedge) of varying thickness must exist between the two surfaces B. an optical flat is required C. work surface must be reflective D. monochromatic source of light is required E. all of these

Answer - Option E
6. The minimum tolerance to which machine can possibly be expected to work and produce no defective under the specified conditions, of a manufacturing process or a machine is called its
    A. process capability study B. machine accuracy study C. both (a) and (b) D. none of these

Answer - Option C
7. Tolerances are specified
    A. to obtain desired fits B. because it is not possible to manufacture a size exactly C. to obtain high accuracy D. to have proper allowance

Answer - Option B
8. Tolerances are basically specified in
    A. unilateral form B. bilateral form C. both (a) and (b) D. none of these

Answer - Option C
9. Bilateral tolerance
    A. usually have plus and minus tolerance of equal amount B. specifies the total tolerance on both sides of the basic dimension C. may be expressed as 25.000 + 0.001 – 0.002 mm D. system defines the theoretically desired size of the basic size E. all of these

Answer - Option D
10. In unilateral tolerance
    A. dimension is allowed to vary only in one direction B. total tolerance is related to a basic dimension C. both (a) and (b) D. none of these

Answer - Option C
11. Accuracy of measuring equipment is
    A. the closeness with which a measurement can be read directly from a measuring instrument B. a measure of how close the reading is to the true size C. the difference between measured value and actual value D. the smallest change is measured that can be measured

Answer - Option B
12. Precision of measuring equipment is
    A. the closeness with which a measurement can be read directly from, a measuring instrument B. a measure of how close the reading is to the true size C. the difference between measured value and actual value D. the smallest change in measure and that can be measured

Answer - Option A
13. Repeat-ability of measuring equipment is
    A. measure of how close the reading is to the true size B. the difference between measured value and actual value C. the smallest change in measure and that can be measured D. the capability to indicate the same reading again and again for a given measure and.

Answer - Option D
14. Advantage of vernier caliper over micrometers is that it
    A. is easier and quicker to use B. is more accurate C. can be used to make both inside and outside measurements over a range of sizes D. none of these

Answer - Option D
15. Combination set can be used to
    A. check angular surfaces B. draw circles and arcs C. scribe lines D. all of these

Answer - Option A
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