What is the function of resistance strain gauge?
What is the function of resistance strain gauge?
It’s primary use is to measure force or strain. The resistance of a strain gauge changes when force is applied and this change will give a different electrical output. Strain gauges use this method to measure pressure, force, weight and tension.
What are the advantages of strain gauges?
The benefits of using well-proven strain gauges. Sensors are extremely important in the modern world. They are used to measure many different quantities in diverse applications such as testing, data acquisition, automation and quality assurance.
What is the main use of strain gauge Mcq?
This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Strain Gauge Measurement Technique”. Explanation: Strain gauge makes use of the practical form of Wheatstone’s bridge to measure the strain developed by an element.
How the strain gauge is used to measure displacement?
A strain gauge is a sensor whose measured electrical resistance varies with changes in strain. Strain is the deformation or displacement of material that results from an applied stress. Stress is the force applied to a material, divided by the material’s cross-sectional area.
What is gauge factor What is its significance?
The gauge factor is a proportional factor between the measured strain and the relative change in the bridge that can be measured by a suitable device supporting Wheatstone bridges, such as QuantumX MX1615B from HBM.
How does a strain gauge measure resistance?
The resistance of a strain gauge varies with applied force and, it converts parameters such as force, pressure, tension, weight, etc. into a change in resistance that can be measured later on. Whenever an external force is applied to an object, it tends to change its shape and size thereby, altering its resistance.
How are multiple strain gauges used to normalize environmental conditions?
To normalize environmental conditions, multiple strain gauges are used, with the gauges placed at various orientations with respect to the direction of desired strain sensing. Temperature effects can be measured and removed from the signal by placing a strain gauge orthogonal to the direction of desired measured strain.
What happens when you replace the R4 resistor with a strain gauge?
If you replace the R4 resistor with a strain gauge, even a minor change in its resistance will change the output voltage Vex which is a function of strain. The equivalent strain output and voltage output always have a relation of 2:1. They are highly precise and don’t get influenced due to temperature changes.
Why do we use strain gauges in electric bridges?
The strain gauges are used to measure the mechanical length change, because the length change results in a change in resistance and the generation of a voltage signal. More details of electric bridges have been presented by Huang et al. [ 12 ]. Figure 6.4 shows a sketch of the resistance bridge. Four resistors are used.
