faculty of degree engineering-083 department of mechanical

Faculty of Degree Engineering-083 Department of Mechanical Engineering – 19

Mechanical Measurement & Metrology

Unit-1 Introduction to Metrology, Linear and Angular Measurement

1 The degree of closeness of the measured value of a certain quantity with its true value is

known as

a. Accuracy

b. Precision

c. Standard

d. Sensitivity

2 Error of measurement =

a. True value – Measured value

b. Precision – True value

c. Measured value – Precision

d. None of the above

3 The ability by which a measuring device can detect small differences in the quantity being

measured by it, is called its

a. Damping

b. Sensitivity

c. Accuracy


4 The following term(s) is (are) associated with measuring devices

a. Sensitivity

b. Damping

c. Both ‘a’ and ‘b’


5 To compare an unknown with a standard through a calibrated system is called

a. Direct comparison

b. Indirect comparison

c. both ‘a’ and ‘b’


6 The following is an internationally recognized and accepted unit system

a. MKS

b. FPS

c. SI

d. All of the above

7 One yard = _____ inch

a. 36

b. 38

c. 40



d. 42

8 The following is a line standard of measurement

a. Measuring tape

b. Slip gauge

c. Micrometer

d. End bars

9 The ‘Wringing’ is due to

a. Atmospheric pressure

b. Molecular attraction

c. both ‘a’ and ‘b’


10 The angle gauge by Dr. Tamlison consists of a set of

a. 10 gauges

b. 12 gauges

c. 14 gauges

d. 16 gauges

11 1 Angstrom (Å) = _____

a. 10^-6m

b. 10^-8m

c. 10^-10m

d. 10^-12m

11 The principle of ‘Interchangeability’ is normally employed for

a. Mass production

b. Production of identical parts

c. Parts within the prescribed limits of sizes

d. All of the above

12 Following is the theoretical size which is common to both the parts of a mating pair

a. Normal size

b. Actual size

c. Base size

d. All of the above

13 To check external diameter of hole, we use

a. Plug gauge

b. Ring gauge

c. Slip gauge

d. Standard screw pitch gauge

14 The following is not used to measure angles

a. Bevel protectors

b. Calibrated levels

c. Clinometers



d. Optical flats

15 Testing flatness or straightness of a surface is possible using

a. vernier caliper

b. micrometer

c. autocollimator

d. all of the above

16 Match the following Group 1 items (Grades) with Group 2 items (application) and select the

correct option

1. Grade I ----------------------------------- A. high precision task

2. Grade II ---------------------------------- B. comparators

3. Grade 00 --------------------------------- C. inspection department

4. Calibration grade ----------------------- D. production

a. 1-A, 2-C, 3-D, 4-B

b. 1-C, 2-D, 3-A, 4-B

c. 1-B, 2-A, 3-C, 4-D

d. 1-D, 2-B, 3-A, 4-C

17 Which of the following is not a type of direct measuring instrument?

a. micrometer

b. vernier caliper

c. divider

d. All of the above

18 Which among the following is an optical instrument?

a. angle dekkor

b. autocollimator

c. both a. and b.

d. none of the above

19 Grade 1 is used in

a. high precision tasks

b. department of inspection

c. calibration of instruments

d. all of the above

20 Which of the following is true?

a. Ring gauge has a taper angle of 3 Φ

b. Clinometer cannot measure angle between two adjacent surfaces

c. Clinometer uses micrometer to measure small angles

d. All of the above

21 Which type of tolerance does a slip gauge have?

a. Unilateral tolerance

b. bilateral tolerance



c. Both a. and b.


22 Which of the following is not a line standard?

a Yard

b Meter

c Precision scale

d Length bar

23 By which material metre (line standard) bar is made of?

a Bronze

b Platinum

c Platinum-bronze alloy

d Platinum-iridium alloy

24 What is the least count of a micrometer?

a) 0.01 mm

b) 0.02 mm

c) 0.1 mm

d) 0.2 mm

25 What is the use of ratchet stop in micrometer?

a) Prevent motion of spindle

b) Maintain uniform measuring pressure

c) Provide measuring surface

d) Forms measuring tip

26 How many divisions are graduated on thimble?

a) 20

b) 25

c) 45

d) 50

27 Which of the following is incorrect for vernier height gauge?

a) Both the surfaces of measuring jaw should be at 45o to the base

b) These gauges can be used for scribing purposes

c) Removable clamps are used

d) Surface plate is used as datum surface for measurements

28 Which of the following is generally used to calibrate slip gauges?

a) Micrometer

b) Collimator

c) Interferometer

d) Gap gauge

29 Which type of instrument is a combination set?

a) Used for highly precision works

b) A non-precision instrument



c) Used to check flatness only

d) A simple ruler with graduations on it

30 Where the spirit level is present in a combination set?

a) Centre head

b) Squaring head

c) Scale

d) there is no spirit level on combination set

31 What is the angle of one surface of squaring head to the scale in combination set?

a) 105 degree

b) 60 degree

c) 75 degree

d) 90 degree

32 Which of the following is not a name of slip gauges?

a) Gauge Blocks

b) Johannsen Gauges

c) Gage Blocks

d) Linear Gauges

33 How many grades or classes of slip gauges are present?

a) 3

b) 5

c) 6

d) 4

34 What is the approximate size of slip gauges?

a) 30mm long and 10mm wide

b) 45mm long and 15mm wide

c) 20mm long and 5mm wide

d) 25mm long and 10mm wide

35 Up to which angle sine bars can measure the angles?

a) 45 degree

b) 60 degree

c) 90 degree

d) 120 degree

36 Which of the following is not used in making of sine bars?

a) High carbon

b) High chromium

c) Corrosion resistant steel

d) Aluminium

37 Which of the following is incorrect regarding sine bars?

a) Sine bar is itself a complete measuring instrument

b) Some holes are drilled in the body



c) It can be used to locate any work to a given angle

d) It is capable of self-generation

38 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

39 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

40 Which gauges are present in the first series (degree) of angle gauges?

a) 5°, 10°, 15°, 25° and 40°

b) 1°, 3°, 9°, 27° and 41°

c) 1°, 5°, 9°, 25° and 45°

d) 5°, 10°, 15°, 30° and 45°

41 At which part spirit level is present in the clinometers?

a) On a rotary member

b) On the fixed member

c) On the base

d) On the circular scale

42 Which of the following is not a common function of clinometers?

a) Determine included angle of two adjacent faces

b) checking angular faces

c) Checking relief angles on small cutting tools

d) setting inclination table

43 How 34’ can be built by using angle gauges?

a) 27’+9’-3’+1’

b) 26’+10’-2’

c) 27’+10’-3’

d) 27’+8’

44 Which of the following is not end standard?

a) Precision scale

b) Length bars

c) Slip gauges

d) Gap gauges

45 Which of the following materials is/are used to make an angle gauge block?

a. Hardening tool steel

b. Nickel



c. Tungsten carbide

d. All of the above

46 The instrument used to measure external and internal diameter of shafts, thickness of parts

and depth of holes, is

a. outside micrometer

b. inside micrometer

c. depth gauge micrometer

d. vernier caliper

Unit-2 LIMIT, FIT, TOLERANCE AND GAUGING

1. The difference between the maximum and minimum size allowed in manufactured

component is called

a. Clearance

b. Allowance

c. Tolerance

d. Limit

2. A dimension is stated as 25 ± 0.02mm in a drawing. What is the tolerance

a. 25.00mm

b. +0.02mm

c. – 0.02mm

d. 0.04mm

3. When tolerance is given on one side of the basic dimension, it is called

a. Tolerance system

b. Allowance system

c. Unilateral tolerance

d. Bilateral tolerance

4. As per BIS system of limits and fits there are 18 grades of tolerance represented by number

symbols from

a. IT01, IT1,....to IT16

b. IT1.....to IT18

c. IT0....to IT17

d. IT01, IT0, IT1 to 16

5. Tolerance is given to the part size to

a. Increase the production

b. Decrease the production

c. Finish the component approximately

d. Produce the parts within the required permissible size error

6. In hole basis system

a. The size of the shaft is made constant



b. The size of the hole is made constant

c. The permissible tolerance are given on the hole and the shaft

d. Allowance is given only on the hole

7. Best example for shrinkage fit is

a. Cart rim on wooden rim

b. Tyre on the rail wheel

c. Tyre on the bicycle rim

d. Flywheel on the shaft

8. Best example for driving fit is

a. Ball bearing on the shaft

b. Tyre on the rail wheel

c. Pulley with key on the shaft

d. Cart rim on the wooden wheel

9. Bilateral tolerance is fixed

a. On upper side of the basic size

b. On lower side of the basic size

c. On any one side of the basic size

d. On both sides of the basic size

10. Interchangeability is normally applied for

a. Repairing of parts

b. Mass production

c. Single piece production

d. All the above

11. A pin is fitted in a hole. The tolerance zone ofthe pin is entirely above that of hole.

The fit obtained will be

a. Clearance fit

b. Transition fit

c. Interference fit

d. Non ofthe above

12. The measured size ofthe dimensions of a componentis called

a. Basic size

b. Normal size

c. Allowed size

d. Actual size

13. In the BIS system oflimits and fits the standard range of sizes covered are

a. 0 to 500mm

b. 25 to 400mm

c. 0 to 100mm

d. 0 to 10mm

14. In the BIS system oflimits and fits,the grades oftolerance are represented by



number and ther are

a. 18 grades oftolerances

b. 16 grades oftolerances

c. 14 grades oftolerances

d. 20 grades oftolerances

15. A hole whose lower deviation is zero is called basic hole. Basic hole indicates letters

a. H

b. G

c. F

d. E

16. In an interchangeable assembly, shafts of size 25.000+0.040−0.010mm mate with holes of

size 25.000+0.030+0.020mm. The maximum interference (in microns) in the assembly is

a. 40

b. 30

c. 20

d. 10

17. Which one of the following instruments is used for checking large internal diameter

a. small hole gauge

b. telescopic gauge

c. pluge gauge

d. snap gauge

18. A taper ring gauge is used for checking

a. external taper

b. internal taper

c. external threads

d. internal threads

19. Thread ring gauge is used for checking

a. external threads

b. internal threads

c. external diameter of cylindrical job

d. internal diameter of jobs

20. Gauges are made of

a. mild steel

b. alloy steel

c. cast steel

d. cast iron

21. Taper plug gauge is used for checking

a. taper holes

b. external diameter of cylindrical parts

c. internal diameter of cylindrical parts



d. diameter of straight holes

22. A plain ring gauge is used for checking

a. taper holes

b. external diameter of cylindrical parts

c. internal diameter of cylindrical parts

d. major diameter of external threads

23. A plug gauge which has its “Go” and “No Go” sizes on the same end is known as

a. single ended plug gauge

b. double ended plug gauge

c. progressive plug gauge

d. continues plug gauge

24. Which one of the following gauges is used to align the lathe tool with the work

a. try square

b. centre gauge

c. thread gauge

d. straight edge

25. Which one of the following gauges is used to check the threading tool of lathe for accuracy on the

60° angle

a. screw pitch gauge

b. thread plug gauge

c. centre gauge

d. thread ring gauge

26. According to Taylor's principle which type of gauge checks both size and geometric

features?

a. Go gauge

b. No go gauge

c. Both a. and b.


27. In selective assembly

a. Parts in an assembly can be replaced by a similar part without any further alteration

b. The parts of any one type are classified into several groups according to size.

c. All the parts are always interchangeable

d. The size of one of the components is measured accurately and then mating component

is made to match with this



Unit-3 COMPARATORS

1. Which of the following is true for uses of comparators?

a. Can’t be used in mass production

b. Not suitable for inspection purposes

c. Can be used as working gauge

d. Slow rate of working

2. 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

3. From which category ‘Sigma comparator’ belongs?

a. Optical comparator

b. Mechanical comparator

c. Mechanical-optical comparator

d. Pneumatic comparator

4. 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

5. Which of the following is true for ’Cross strip’ in sigma comparator?

a. Has two moving members

b. Cross strip is hinged

c. Two members are at 45o to each other

d. A flexible strip is attached to any one of the members of cross strip

6. Which colour of light is filtered by filter present in Zeiss Ultra-optimeter?

a. Red

b. Blue

c. Green

d. Yellow

7. Which of the following is true for Eden-Rolt Millionth Comparator?

a. Utilise both mechanical and optical magnifications

b. Only mechanical magnification

c. Only optical magnification

d. Only electrical magnification



8. Which of the following option is correct regarding the characteristics of comparators?

a. Minimum inertia

b. Minimum compensation for temperature effect

c. High measuring pressure

d. Minimum versatility

9. What is the use of bleed valve in flow type pneumatic comparator?

a. Zero adjustment

b. Measurement of size

c. Connect passage of air from plastic tube to gauging head

d. Used with pressure reducing unit

10. What is the order of overall magnification in Eden-Rolt Millionth Comparator?

a. 50

b. 400

c. 20,000

d. 800

11. Johansson mickrocator is a type of

a. mechanical optical comparator

b. mechanical comparator

c. optical comparator

d. electrical comparator

12. Which of the following statements are true?

1. Mechanical comparators are compact and easy to handle

2. Parallax error is never observed in mechanical comparator

3. Sigma comparator is a type of mechanical comparator

4. Mechanical comparators have low inertia which makes them sensitive to vibrations

a. 1 and 2

b. 3 and 4

c. 1 and 3

d. All of the above

13. Which type of comparator changes its magnification, when distance between cross strip

hinge and knife edge is varied?

a. Johansson mickrocator

b. Solex pneumatic comparator

c. Projector comparator

d. Sigma comparator

14. Overall magnification of optical comparators is given as

a. (4 d / f) x ( magnification of eye piece)

b. (2 f / d) x ( magnification of eye piece)

c. (4 f / d) x ( magnification of eye piece)

d. (2 d / f) x ( magnification of eye piece)



15. Which principle is used to measure distance in electronic comparator?

a. Frequency modulation

b. Radio oscillations

c. Both a. and b.


16. The sensitivity of back pressure air gauge is given by the relation shown below, what does

δ R / δ p2 signify? (δR / δt) = (δ Am / δ t) x (δ R / δ p2 ) x (δ p2 / δ Am )

a. Pneumatic sensitivity

b. Sensitivity of pressure gauge

c. Overall magnification Measuring head sensitivity


17. Internal diameter of any workpiece can be measured using

a. Solex pneumatic comparator

b. Sigma comparator

c. Johansson mickrocator

b. All of the above

18. Which of the following statements is true for LVDT?

a. It is a mutual capacitive transducer

b. Presence of hysteresis gives high repeatability

c. It can measure displacement and pressure

d. All of the above

19. What is the phase difference, when the system is operated at excitation frequency ?

a. Phase difference is greater than 90o

b. Phase difference is less than 90o

c. Phase difference is zero

b. Unpredictable

20. Fiducial indicators contain

a. Calibrated scale

b. A single index mark

c. Micrometer screw movement

d. Optical head



Unit-3 THREAD MEASUREMENT

1. Why are pitch errors observed in threads?

a. Lack of inspection

b. Incorrect ratio of tool work velocity

c. Interference between mating parts

d. All of the above

2. Calculate diameter of best wire for a Withworth thread of M 24 x 7 mm size.

a. 4.04 mm

b. 7.8 mm

c. 3.94 mm

d. 8.08 mm

3. Which thread has a combined strength of square thread and V thread?

a. Acme thread

b. Knuckle thread

c. Buttress thread

d. British standard Whitworth thread

4. Which type of errors show linear relation between cumulative pitch error and length of

thread?

a. Periodic errors

b. Progressive errors

c. Both a. and b.


5. What is used to measure the major diameter of an external thread?

a. Bench micrometer

b. Thread micrometer

c. One wire method

d. All of the above

6. Which of the following statements is true?

a. In three wire method, each flank of a thread is touched by a wire in axial plane section

and this is valid only for a thread having rank angle

b. Compression error is always subtracted from effective diameter value obtained

c. Floating carriage type of micrometer is used for two wire method.

d. The value of θ is assumed 30o while calculating best wire diameter for Withworth

thread

7. What effect does pitch error have on nut and bolt?

a. Major diameter of nut decreases and effective diameter of bolt increases

b. Effective diameter of nut decreases and effective diameter of bolt increases

c. Effective diameter of nut increases and effective diameter of bolt decreases




8. Which type of threads is used to transmit power in one direction?

a. Square threads

b. Buttress threads

c. Both a. and b.


9. Which method gives accurate results when effective diameter is measured without

considering the thread angle?

a. Two wire method

b. Three wire method

c. Best wire size

d. All the above

10. The pitch diameter of the external screw thread is checked by

a. thread ring gauge

b. screw pitch gauge

c. vernier caliper

d. screw thread micrometer

11. The pitch of 3 start thread is the lead divided by

a. 1

b. 2

c. 3

d. 4

12. The distance through which a screw thread advances axially in one turn is called

a. lead of thread

b. pitch of thread

c. diameter of thread

d. depth of thread

13. A screw thread is formed on a cylindrical surface by cutting

a. helical grooves

b. V-grooves

c. Square grooves

d. half round grooves

14. In a single start thread

a. lead and pitch are equal

b. lead is double the pitch

c. pitch is double the lead

d. lead is half the pitch



15. Flank is a __________

a. line

b. point

c. distance

d. surface

16. For a unified triangular external thread the distance between the crest and root (d) is ____

when pitch (p) is given.

a. d= 0.75 p

b. d= 0.5 p

c. d= 0.61 p

d. d= 0.64 p

17. For a Whitworth external thread the distance between the crest and root (d) is ____ when

pitch (p) is given.

a. d= 0.75 p

b. d= 0.5 p

c. d= 0.61 p

d. d= 0.64 p

18. For buttress thread, the angle between the two flanks is ____

a. 55 degrees

b. 47.5 degrees

c. 29 degrees

d. 45 degrees

19. For acme thread, the angle between the two flanks is ____

a. 55 degrees

b. 47.5 degrees

c. 29 degrees

d. 45 degrees

20. For a square thread, the distance between the crest and root (d) is ____ when pitch (p) is

given.

a. d= 0.86 p

b. d= 0.5 p

c. d= 0.61 p

d. d= 0.64 p

21. For a buttress thread, the distance between the crest and root (d) is ____ when pitch (p) is

given.

a. d= 0.86 p

b. d= 0.5 p

c. d= 0.64 p

d. d= 0.75 p



Unit- 4 GEAR TOOTH MEASUREMENTS

1. Spiral gears are used to transmit power when the shafts are

a. parallel

b. interesting

c. parallel and intersecting

d. neither parallel nor intersecting

2. Which of the following statements is/are true?

a. Parkinson's gear tester is used to measure variation in centre distance

b. Tool maker's microscope is used to measure tooth thickness

c. Teeth having wider flanks have less strength

d. All the above statements are true

3. Smooth motion in involute tooth profile is possible due to

a. variation in pressure angle

b. constant pressure angle

c. Both a. and b.


4. Which type of tooth profile has double curvature?

a. cycloidal tooth profile

b. involute tooth profile

c. both a. and b.


5. Calculate the tool width of a gear having 30 number of teeth and with module 5 mm.

a. 6.352 mm

b. 5.555 mm

c. 7.850 mm


6. A gear has 30 teeth with module 4 mm and pressure angle of 20o. Calculate length of base

tangent in a gear over 7 teeth space.

a. 21.25 mm

b. 90.23 mm

c. 62.53 mm


7. Which formula is used to calculate diametral pitch?

a. (number of teeth) x (pitch circle diameter)

b. (pitch circle diameter) / (number of teeth)

c. (number of teeth) / (pitch circle diameter)




8. Analytical checking of gears includes checking of

a. tooth profile

b. vibrations

c. noise level

d. all of the above

9. Which of the following instruments is used to measure base pitch of a gear in base tangent

method?

a. Gear tooth vernier caliper

b. David Brown tangent caliper

c. David Brown tangent comparator

d. David Brown tangent micrometer

10. Which of the following components are inspected by a Tool maker's microscope?

a. gauges

b. screw threads

c. dies and fixtures

b. all of the above

11. Profile of a gear tooth can be checked by

a. Sine bar

b. Bench micrometer

c. Optical pyrometer

d. Optical projector

12. Gear tooth caliper is used to find the chordal thickness of the following type of gear tooth

a. Spur gears

b. Helical gears

c. Worm gears

d. Bevel gears

13. Gear tooth vernier is used to measure

a. Circular pitch

b. Pitch line thickness of tooth.

c. Tooth thickness

d. Addendum and dedendum

Unit-5 Force, Torque, Pressure, Strain and temperature Measurement

1. Force can be measured by the help of

a. foci meter

b. spring balance

c. pane balance

d. both a and b



2. Odometer is used to measure

a. Threshold odours

b. Composition of gases

c. Suspended solids in a gas

d. Distances

3. Invar, the least expensible steel alloys used for measuring tapes contains about 30% of

a. Nickel

b. Vanadium

c. Cobalt

d. Aluminium

4. Bolometers are used for measurement of

a. Thermal radiations

b. Electromagnetic, radiations

c. Manetic hysteresis loop area

d. Intensity of light

5. Output of a bimetallic element will be __________________

a) Strain

b) Pressure

c) Displacement

d) Voltage

6. Which of the following can be used for measuring temperature?

a) Metallic diaphragm

b) Fluid expansion system

c) Capsule

d) Bourdon tube

7. IPTS stands for ________________

a) International Practical Temperature Scale

b) Indian Primary Temperature Scale

c) International Primary Temperature Scale

d) International Practical Temperature Standard

8. In liquid in steel bulb thermometer, which liquid can be used for measuring temperature

up to 60000C?

a) Mercury

b) Ether

c) Water

d) None of the mentioned

9. Which of the following is used as indication instrument in a liquid expansion system?

a) Bellows

b) Bourdon tube

c) Ammeter



d) Thermometer

10. Which of the following is true for bimetallic type thermometer?

a) Two metals have same temperature coefficients

b) Two metals have different temperature coefficient

c) One metal is cooled always


11. When bimetallic thermometer heated, curling occurs to the side of metal with least

temperature coefficients.

a) True

b) False

12. Analogous quantities of heat flow and temperature in electrical are _____________ and

_______________

a) Potential and current

b) Current and potential

c) Power and potential

d) Current and power

13. Ratio of net amount of heat received and stored in the body for certain time interval is

known as _________________

a) Temperature

b) Thermal coefficient

c) Thermal storage capacity


14. Heat transfer coefficient of a material with length l is _________

a) K/l

b) l/K

c) 1/K

d) Kl

15. Which of the following is detected using manometer devices?

a) Pressure difference between manometric and measuring liquid

b) pH difference between manometric and measuring liquid

c) Density difference between manometric and measuring liquid


16. What is the difference between water and transformer oil as a manometric liquid?

a) Water is used for large pressure differential

b) Transformer oil is used for large pressure differential

c) Transformer oil has evaporation problems

d) Water has evaporation problems

17. In which of the following categories be thin plate diaphragm included?

a) Primary transducer



b) Secondary transducer

c) Voltage measuring devices

d) Spring balance systems

18. Which of the following applications are suited for thin plate diaphragms?

a) Static pressure only

b) Dynamic pressure only

c) Both static and dynamic pressure with large frequency

d) Both static and dynamic pressure with small frequency

19. Which of the following quantities can be measured using bellows?

a) Absolute pressure

b) Gauge pressure

c) Differential pressure

d) All of the mentioned

20. Which of the following conversion take place in bourdon tubes?

a) Pressure to displacement

b) Pressure to voltage

c) Pressure to strain

d) Pressure to force

21. Capsules are made from diaphragms’.

a) True

b) False

22. In bellows pressure to displacement conversion takes place’.

a) True

b) False

23. Which of the following devices convert pressure to displacement?

a) Diaphragm

b) Bellow

c) Capsule

d) Both diaphragm and capsule

24. Which of the following device can be used for force measurement?

a) Beams

b) Bellows

c) Capsule

d) Bourdon tube

25. Load cells are used for measuring _______________

a) Large weights only

b) Small weights only

c) Weights moving in high speed

d) Slowly moving weights

26. Which of the following can be measured using a Ring-type load cell?



a) Large weight

b) Small weight

c) Both large and small weights


27. Which of the following arrangements are used in load cells?

a) Tensile strain gauges

b) Compressive strain gauges

c) Both tensile and compressive strain gauges


28. Which of the following conversion is correct for load cell?

a) Force to strain

b) Force to displacement

c) Force to voltage

d) Both force to strain and force to displacement

29. Diaphragm element can also be used for force measurement.

a) True

b) False

30. Which of the following statement is true for force?

a) Force is a scalar quantity

b) Force is a vector quantity

c) Force is a dimensionless quantity


31. Which of the following statement is true for diaphragms?

a) Used for measuring small forces

b) Used for measuring large forces

c) Used for measuring dynamic forces


32. Which of the following represents a moment of inertia of force acting tangential to a

cylindrical rod?

a) FR

b) F/R

c) F2R

d) FR2

33. Which of the following devices can be used for measuring torque?

a) Helical spring

b) Flat spiral spring

c) Bellows

d) Diaphragm

34. Which of the following can be well suited for flat-spiral spring device?

a) Used for a very low torque range



b) Used for a very high torque range

c) Used for all ranges of torque


35. ___________ is used for measuring torque in rotating parts in machines.

a) Accelerometer

b) Dynamometer

c) Tachometer


faculty of degree engineering-083 department of mechanical

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