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Engineering Metrology
Engineering Metrology Basic
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Q.1
Which type of distribution approach is not followed by systematic error?
a) U-shaped distribution approach
b) Rectangular distribution approach
c) Triangular distribution approach
d) Normal distribution approach
Q.2
Which approach is accepted as an international procedure in evaluating the uncertainty of measurement?
a) Conventional approach
b) Modern approach
c) Experimental approach
d) Observational approach
Q.3
How many methods of evaluation of uncertainty are based upon modern approach?
a) 2 methods namely Type-A and Type-B
b) 2 methods namely Type-1 and Type-2
c) 3 methods namely Type-A, Type-B and Type-C
d) 3 methods namely Type-1, Type-2 and Type-3
Q.4
Which of the following option is correct for given statements about evaluation of uncertainty of measurement?
a) T, F
b) F, F
c) F, T
d) T, T
Q.5
Which type of approach is followed by random errors?
a) Poisson distribution approach
b) Binomial distribution approach
c) Gaussian distribution approach
d) Polynomial distribution approach
Q.6
What is the main characteristic of random errors used to determine maximum measuring error?
a) Cumulative error
b) Standard deviation
c) Variance
d) Median
Q.7
What is the relation between maximum error for a measurement method and standard deviation in the case of random errors?
a) Maximum error equal to standard deviation
b) Maximum error is two times of standard deviation
c) Maximum error is three times of standard deviation
d) Maximum error is four times of standard deviation
Q.8
Which of the following error is not a systematic error?
a) Error induced due to stylus pressure
b) Instrument location errors
c) Error due to parallax
d) Error due to play in the instrument’s linkages
Q.9
What is the advantage of statistical methods?
a) Increase the value of (Quality/cost)
b) Increase the value of (Cost/Quality)
c) Decrease the value of (Cost * Quality)
d) Increase the value of (Cost * Quality)
Q.10
What is true about random errors?
a) Sign of error can be predicted
b) Probability of occurrence of same absolute value is not equal for negative and positive errors
c) Constant in magnitude
d) Arithmetic mean in a measurement series approaches zero as measurement number increases
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