Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY

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Question
Chapter 2, Problem 2.1P
To determine

## The term “signal” as it relates to measurement systems. Provide two examples of static and dynamic input signals to particular measurement system.

### Explanation of Solution

Signal is an output of any system or physical quantity that varies depending upon time, pressure or temperature like any independent variable of input given.

Example of static input signals:

1. Y(t) = 5X(t) + 17;
2. Here, the output at tth instant depends on the input at the same tth instant. Hence, the given system is static system.
3. Y(t) = 7X(t) + X2(t) + 5;
4. Here also, the output at tth instant depends on the input at the same tth instant. Hence, the given system is static system.

Example of dynamic input signals:

1. Y(t) = 3X(t+2) + 10X(t);
2. Here the output at tth instant depends on the same instant as well as on future instant also.
3. Y(t) = 5X(t-3) + 3X(t) + 6;
4. Here the output at tth instant depends on the same instant as well as on past instant also.

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