The strain gauge is fundamental of many type of sensors like pressure sensors, load cells, torque sensors etc. Foil stain gauges are available in a wide choice of shapes and sizes to suit a variety of applications.
Doesn't matter if you are a Mechanical, Civil, or other branch student/Engineer, Because this course is skill specific, which is Important & Useful in every field.
A transducer is a device that converts one form of energy into another form. The transducer, which may be electrical, mechanical, optical, magnetic, piezoelectric, etc., converts the sensed information into a more convenient form.