4. During a Morse test on a 4 cylinder engine, the following measurements of brake power were taken at a constant speed. All cylinders firing Number 1 cylinder not firing Number 2 cylinder not firing Number 3 cylinder not firing Number 4 cylinder not firing The mechanical efficiency of the engine is a) 96.53% b) 81.07% c) 84.07% d) 68.22% 3037 KW 2102 kW 2102 kW 2100 kw 2098 kW e) None
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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