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Consider the following statements for accuracy of the instrument:

1. The accuracy of the instrument may be specified in terms of limits of error.

2. The specification of a point accuracy gives any information about the general accuracy of the instrument.

3. The best way to conceive the idea of accuracy is to specify it in terms of the true value of the quantity being measured.

Which of the above statements are correct?


1. 1 and 2 only
2. 1 and 3 only
3. 1, 2 and 3
4. 2 and 3 only
5.

1 Answer

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Best answer
Correct Answer - Option 2 : 1 and 3 only

Statement 1 and 3 are correct, because accuracy is defined in terms of limits of error.

Limiting error = \(\rm \frac{\delta A}{A} \times 100\)

Also accuracy is defined in terms of the true value of quantity being measured.%

%Error(t) = \(\rm \frac{A_m - A_T}{A_T}\times 100\)

Statement 2 is wrong because accuracy at any point cannot define the accuracy of instrument in general because accuracy also depends on the calibration of scale.

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