Metrology and Measurements solved MCQs

1 of 13

1. What is the relation between variation due to observation, manufacturing process and measuring process of a product?

a. σobservation = σprocess + σmeasurement

B. σobservation = σprocess – σmeasurement

c. σobservation = σprocess * σmeasurement

d. σobservation = σprocess / σmeasurement

2. What is the maximum permissible error for class I micrometers?

a. 0.002 mm

B. 0.004 mm

c. 0.008 mm

d. 0.016 mm

3. movements?

a. 0.04 mm

B. 0.05 mm

c. 0.07 mm

d. 0.06 mm

4. rotation in universal micrometer?

a. dial indicator

B. slip gauges

c. control shaft

d. universal microscope

5. used for setting of helix angles in universal micrometer?

a. 1’

B. 2’

c. 3’

d. 4’

6. Which of the following is true for the calibration of instruments?

a. in casting and fabrication shops the measurements made are of more precise nature as compared to those made in machine shop and tool room

B. periodical calibration is made for optical measuring instruments

c. there is no need of periodic calibration in universal microscope

d. preventive maintenance is not necessary for optical measuring instruments

7. What is the permissible error in straight movement of longitudinal and transverse table in horizontal plane?

a. 0.002 mm

B. 0.003 mm

c. 0.004 mm

d. 0.005 mm

8. Which of the following is true for checking the Relative perpendicular motion of the longitudinal and transverse carriage?

a. the permissible error allowed is 0.005 mm in 2500 mm length.

B. this is checked using a slip gauges

c. precision square of class i or 0 is used

d. maximum error in precision error is of ± 10″ in squareness

9. What is the maximum permissible error in wear of centres?

a. 0.04 mm

B. 0.03 mm

c. 0.02 mm

d. 0.01 mm

10. What is the least count of dial indicators which can be calibrated using passmeter?

a. 0.01 mm

B. 0.03 mm

c. 0.05 mm

d. 0.07 mm

11. Which of the following is caused bycareless handling?

a. systematic error

B. gross error

c. random error

d. none of the mentioned

12. ‘A system will be error free if we removeall systematic error’.

a. true

B. false

13. Which of the following is not afundamental quantity?

a. length

B. angle

c. time

d. luminous intensity

14. Which standard is fixed and used forindustrial laboratories?

a. international standard

B. primary standard

c. secondary standard

d. working standard

15. Which of the following error is caused bypoor calibration of the instrument?

a. random error

B. gross error

c. systematic error

d. precision error

16. Starting position of an object is representedas x=5.1±0.2m and finishing position asy=6.9±0.3m. What will be the displacementand error in displacement?

a. displacement = 1m, error = 0.5m

B. displacement = 2m, error = 0.36m

c. displacement = 1.8m, error = 0.36m

d. displacement = 1.5m, error = 0.4m

17. ‘Zero error is an indication of instrumental error’.

a. true

B. false

18. Which of the following is not among the methods of linear measurements?

a. direct measurements

B. measurements by optical means

c. indirect measurements

d. electromagnetic methods or edm

19. Which of the following is not a method of measuring the distances directly?

a. pacing

B. measurement with passometer

c. measurement with pedometer

d. measurement with theodolite

20. Which of the following measurements varies with an individual before computing the length of line?

a. chaining

B. pacing

c. levelling

d. contouring

21. Which method consists in counting the number of paces between the two points of a line?

a. chaining

B. pacing

c. levelling

d. contouring

22. Pacing is difficult in                

a. smooth surfaces

B. plain areas

c. rough ground

d. plateaus

23. Which instrument mechanism is operated by motion of the body and it automatically registers the number of paces, thus avoiding the monotony and strain of counting the paces, by the surveyor?

a. passometer

B. pedometer

c. odometer

d. chaining

24. Which instrument registers total distance covered by any number of pace?

a. passometer

B. pedometer

c. odometer

d. chaining

25. Instrument for registering the number of revolutions of a wheel is            

a. odometer

B. pedometer

c. pedometer

d. chaining

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