AC induction motors are based on the principle of a rotating magnetic field produced by a set of stationary…
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There are several different methods useful for causing an AC induction motor to brake, or slow down: DC…
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Developed by the Modicon company (the original manufacturer of the Programmable Logic Controller, or PLC) in…
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Modern DC and AC motor drives provide features useful when using electric motors as final control elements.…
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Perhaps the most valuable skill an instrument technician can possess is the ability to efficiently diagnose…
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In reliability engineering, it is important to be able to quantity the reliability (or conversely, the…
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When a high-energy photon strikes an atom, it may eject one of the lower-level electrons from its shell,…
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Every programmable logic controller must have some means of receiving and interpreting signals from real-world…
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Converting between disparate units of measurement is the bane of many science students. The problem is worse…
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While 50 and 51 (instantaneous and time overcurrent) relay functions monitor line current magnitude and guard…
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Regulating the electric power sent to an electric motor is a task performed by high-speed switching…
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“Radio” systems use electromagnetic fields to communicate information over long distances through…
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A machine in the broad sense of the word is any device designed to translate some form of energy into useful…
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Suppose we wished to measure the consumption of propane over time for a large propane storage tank supplying a…
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Stoichiometry is the accounting of atoms before and after a chemical reaction. It is an expression of the Law…
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The Law of Continuity for fluids states that the product of mass density (\(\rho\)), cross-sectional pipe area…
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Mechanical pressure-sensing elements include the bellows, the diaphragm, and the bourdon tube. Each of these…
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As discussed at the beginning of this chapter, instrumentation safety may be broadly divided into two…
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Most people reading this book have likely had the experience of adjusting water temperature using two hand…
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Creative Commons Attribution 4.0 International Public License By exercising the Licensed Rights (defined…
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