25) Why does plastic deformation occur?: A) Engineering stress was too low. B) Engineering stress was too high. OC) The yield strength is infinite. D) The temperature is too low. 26) A spring can be stretched a distance of 5 cm with a force of 1 N. An identical spring is connected in parallel with the first and both are pulled together. How much force is required to stretch the pair a distance of 5 cm?: * A) 2 N B) 1 N OC) 0.5 N OD) 3 N * 27) What is the difference between dynamics and kinematics?: A) Dynamics studies how objects move; kinematics studies why objects move. B) Dynamics determines the causes of motions; kinematics calculates the trajectory of objects. C) Dynamics is the study of movement; kinematics is the study of motion. D) Dynamics and kinematics are interchangeable terms.
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
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