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ME345_Lecture_36

ME345_Lecture_36 - M E 345 Spring 2008 Professor John M...

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M E 345 Spring 2008 Professor John M. Cimbala Lecture 36 04/14/2008 Today, we will : Continue to review the pdf module: Measurement of Mechanical Quantities (begin where we left off on Friday – sonic and ultrasonic transducers) Do some example problems – displacement measurement, rotation rate measurement Do a demo using a stroboscopic tachometer Example Given : A linear potentiometer is constructed using a resistor with resistance R = 10.0 k Ω and length L = 10 cm. The supply voltage is 5.00 V DC. To do : When V o = 2.25 V, calculate distance x . Solution : V s L x Slider V o
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Example Given : A home-made capacitance displacement sensor is constructed of two metal plates with air in the gap: initial gap distance is d = 0.100 mm the plate surface dimensions are
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ME345_Lecture_36 - M E 345 Spring 2008 Professor John M...

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