Metrology MCQ Questions And Answers
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- 1.When a set of readings of measurement has a wide range, it indicates
- A.
High precision
- B.
High accuracy
- C.
Low precision
- D.
Low accuracy
- 2.The difference between the lower and higher values that an instrument can measure is called.
- A.
Accuracy
- B.
Sensitivity
- C.
Range
- D.
Error
- 3.When determining the uncertainty for a particular measurement device, the common uncertainty factors that should be included are
- A.
Errors in the measurement technique and method
- B.
Random variability of the measurement process
- C.
Technician's error
- D.
All of these
- 4.The aim of calibration is to
- A.
Meet customer requirement
- B.
Detect deterioration of accuracy
- C.
Comply with ISO9000 standard requirements
- D.
Practice measurement procedures
- 5.Which of the following defines parallax error
- A.
Same as observational error
- B.
The apparent shift of an object when the position of the observer is altered
- C.
Error caused by the distance between scale and the measured feature
- D.
Mean of the values of measurements when the object is observed from the right and from the left
- 6.Which of the following errors is eliminated or minimized by zero setting adjustment on a dial indicator
- A.
Parallax Error
- B.
Inherent Error
- C.
Alignment Error
- D.
Computational Error
- 7.When a steel rule is used, which of the following is the source of measurement uncertainty
- A.
Inherent instrument error, temperature error, and manipulative error
- B.
Attachment error, manipulative error, and temperature error
- C.
Attachment error, bias, and inherent instrument error
- D.
Inherent instrument error, manipulative error, and observational error
- 8.Accuracy is defined as
- A.
A measure of how often an experimental value can be repeated
- B.
The closeness of a measured value to the real value
- C.
The number of significant figures used in a measurement
- D.
None of these
- 9.Conformity of a physical quantity to the national standard of measurement is known as
- A.
Calibration
- B.
Sensitivity
- C.
Traceability
- D.
Repeatability
- 10.Systematic errors are
- A.
Controllable errors
- B.
Random errors
- C.
Uncontrollable errors
- D.
None of these
- 11.When a series of repeated measurements that are made in a component under similar conditions are plotted, it follows.
- A.
Lognormal distribution
- B.
Weibull distribution
- C.
Binomial distribution
- D.
Gaussian distribution
- 12.Random errors can be assessed.
- A.
Experimentally
- B.
By performing sensitivity analysis
- C.
Statistically
- D.
Empirically
- 13.A modern meter is
- A.
The length of the path traveled by light in vacuum during a time interval of 1/299792458 of a second
- B.
1650763.73 X wavelengths of the red-orange radiation of krypton 86 atom in a vacuum
- C.
The length of the path traveled by light in vacuum during a time interval of 1/399792458 of a second
- D.
1660793.73 X wavelengths of the red-orange radiation of krypton 86 atom in the vacuum.
- 14.Reproducibility of the modern meter is of the order of
- A.
1 part in 100 million
- B.
3 parts in 1011
- C.
3 parts in 109
- D.
1 part in 1000 million
- 15.When a measurement is made between two flat parallel surfaces, it is called.
- A.
Line measurement
- B.
Direct measurement
- C.
Standard measurement
- D.
End measurement
- 16.A public institution for standardizing and verifying instruments, testing materials, and determining physical constants are
- A.
BPL
- B.
IPL
- C.
NPL
- D.
NMI
- 17.Subdivisions of end standards are carried out using.
- A.
Crook's level comparator
- B.
Brookes level comparator
- C.
Johnsson Mikrokator
- D.
Sigma electronic comparator
- 18.When airy points support a length standard of two points, they will be apart by a distance.
- A.
0.577L
- B.
0.575L
- C.
0.757L
- D.
0.775L
- 19.Which one of the following is true?
- A.
Line standard does not have parallax error.
- B.
End standard does not have parallax error.
- C.
Both line and end standards have parallax error.
- D.
Both line and end standards do not have parallax error.
- 20.Alignment with the axis of measurement is easy in end standards because they possess
- A.
Parallax effect
- B.
High accuracy
- C.
Airy points
- D.
A built-in datum
- 21.A line standard is transferred to an end standard by using.
- A.
A composite line standard
- B.
A built-in datum
- C.
Workshop standard
- D.
Airy points
- 22.Both line and end standards are initially calibrated at
- A.
18 +/- 1 degrees
- B.
18 +/- 0.5 degrees
- C.
20+/- 0.5 degrees
- D.
20 +/- 1 degrees
- 23.In a line standard, distance is measured between
- A.
Two flat parallel surfaces
- B.
Two engraved lines
- C.
Two points
- D.
Two inclined surfaces
- 24.Wringing of slip gauges is used in
- A.
Line measurement
- B.
Primary standards
- C.
Both line and end standards
- D.
End standards
- 25.Comparison of the characteristics of line and end standards clearly shows that the accuracy.
- A.
Inline standard is greater than in end standard
- B.
In end, standard is greater than inline standard
- C.
Of both are equal
- D.
Cannot be determined by the comparison of characteristics only
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