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(a) What is the difference between precision and accuracy? (b) How can random errors be minimised when collecting experimental data? A strain gauge has a nominal resistance of 150 2 and a gauge factor of 2.5. It is used in a quarter bridge with other resistors, also with a nominal resistance of 150 2, and a 5 V supply voltage. (i) Determine the strain if the output voltage is 15 mV. (ii) State TWO possible sources of error with the strain measurement. (c) (d) Explain, with the aid of diagrams, the operation of two different pressure transducers, one which uses strain gauges and one which does not.

(a) What is the difference between precision and accuracy? (b) How can random errors be minimised when collecting experimental data? A strain gauge has a nominal resistance of 150 2 and a gauge factor of 2.5. It is used in a quarter bridge with other resistors, also with a nominal resistance of 150 2, and a 5 V supply voltage. (i) Determine the strain if the output voltage is 15 mV. (ii) State TWO possible sources of error with the strain measurement. (c) (d) Explain, with the aid of diagrams, the operation of two different pressure transducers, one which uses strain gauges and one which does not.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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(a) What is the difference between precision and accuracy? (b) How can random errors be minimised when collecting experimental data? A strain gauge has a nominal resistance of 150 2 and a gauge factor of 2.5. It is used in a quarter bridge with other resistors, also with a nominal resistance of 150 2, and a 5 V (c) supply voltage. (i) Determine the strain if the output voltage is 15 mV. (ii) State TWO possible sources of error with the strain measurement. Explain, with the aid of diagrams, the operation of two different pressure transducers, one which uses strain gauges and one which does not. (d)
Transcribed Image Text:(a) What is the difference between precision and accuracy? (b) How can random errors be minimised when collecting experimental data? A strain gauge has a nominal resistance of 150 2 and a gauge factor of 2.5. It is used in a quarter bridge with other resistors, also with a nominal resistance of 150 2, and a 5 V (c) supply voltage. (i) Determine the strain if the output voltage is 15 mV. (ii) State TWO possible sources of error with the strain measurement. Explain, with the aid of diagrams, the operation of two different pressure transducers, one which uses strain gauges and one which does not. (d)
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