Measurement uncertainty, Other Engineering

Real measurements never deliver the true value of the physical quantity or measurand. The measurement uncertainty consists of a random error and a systematic error. Most of the error analysis is done for random error so that one has to be careful when treating known systematic errors. The systematic error analysis is different from the random error analysis.
Random error is produced by statistical fluctuations of the measurand 

e.g. the number of electrons passing through the current meter in each second.

Precision of the measurement device relates to low random error. Systematic error is produced by zero offset, wrong gain, changes in the environment (drift of gain and offset), imperfect observational methods, etc. It can usually be eliminated by careful calibration. But it is not always known that it exists. Accuracy of the measurement device relates to low systematic error.

1109_Measurement uncertainty.png

Posted Date: 8/28/2012 6:27:14 AM | Location : United States







Related Discussions:- Measurement uncertainty, Assignment Help, Ask Question on Measurement uncertainty, Get Answer, Expert's Help, Measurement uncertainty Discussions

Write discussion on Measurement uncertainty
Your posts are moderated
Related Questions
PROPELLER BALANCE There are two types of balance of importance when working with propellers: • Static Balance • Dynamic Balance Static balance is checked and corrected

What''s the principles of surveying?

what things require for finance project on capital budgeting?

Question: a) Write the detailed operation/description of the following mnemonics: (i) MOVX @DPTR, A (ii) MOVC A, @A + PC (iii) PUSH add b) What is a subroutine and

Acoustic linings in Aircraft engine: One method of suppressing the noise from the fan stage of a high by-pass ratio engine is to incorporate a noise absorbent liner around the

PROPELLER TORQUE Propeller torque is produced by the aerodynamic drag on the blades when in motion. Propeller torque acts in the plane of rotation and opposes engine torque.

Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a granite with a UCS of 300 MPa • Drill hole diameter is

BASIC PRINCIPLES : The purpose of a propeller is to convert the power developed by the engine into a useful force called 'Thrust'. This force must be equal to and opposite in

write an algorithm to find a number that multiplies your name 10 times

Since the introduction of mobile phones and other smart devices, concerns (both scientific and public) have been raised about the potential health impacts from regular use. Numerou