Measurement Uncertainty Test

1. Which of the following option is correct for given statements about evaluation of uncertainty of measurement?
Statement 1: Principle of evaluation of uncertainty by modern approach is approximately the same as conventional approach.
Statement 2: Conventional approach is problem specific.

F, F

T, F

T, T

F, T

2. How many methods of evaluation of uncertainty are based upon modern approach?

3 methods namely Type-1, Type-2 and Type-3

2 methods namely Type-A and Type-B

3 methods namely Type-A, Type-B and Type-C

2 methods namely Type-1 and Type-2

3. What is true about random errors?

Sign of error can be predicted

Probability of occurrence of same absolute value is not equal for negative and positive errors

Constant in magnitude

Arithmetic mean in a measurement series approaches zero as measurement number increases

4. Which type of distribution approach is not followed by systematic error?

U-shaped distribution approach

Normal distribution approach

Rectangular distribution approach

Triangular distribution approach

5. Which of the following error is not a systematic error?

Error due to parallax

Error induced due to stylus pressure

Error due to play in the instrument’s linkages

Instrument location errors

6. What is the main characteristic of random errors used to determine maximum measuring error?

Median

Cumulative error

Variance

Standard deviation

7. What is the advantage of statistical methods?

Increase the value of (Cost/Quality)

Decrease the value of (Cost * Quality)

Increase the value of (Cost * Quality)

Increase the value of (Quality/cost)

8. Which type of approach is followed by random errors?

Gaussian distribution approach

Polynomial distribution approach

Poisson distribution approach

Binomial distribution approach

9. What is the relation between maximum error for a measurement method and standard deviation in the case of random errors?

Maximum error equal to standard deviation

Maximum error is two times of standard deviation

Maximum error is three times of standard deviation

Maximum error is four times of standard deviation

10. Which approach is accepted as an international procedure in evaluating the uncertainty of measurement?

Conventional approach

Experimental approach

Observational approach

Modern approach