ME224 Lab4 Introduction The purpose of this lab is to build a temperature monitor and controller for a small aluminum block. Techniques involved in this lab include using transistors as switches‚ calibrating transducers‚ and writing control programs in LabVIEW. The main piece of equipment used in this lab is an aluminum block apparatus; the block has several holes drilled into it and embedded in them is a resistance heater‚ a thermistor‚ and a thermometer. In addition‚ a simple circuit is attached
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The Use of Cooling Curves in the Determination of the Phase Diagram for a Lead-Tin System V.O.L.Tabell Department of Mining‚ Metallurgical and Materials Engineering University of the Philippines‚ Diliman vo_tabell@yahoo.com Abstract This paper discusses the use of the cooling curves in the determination of the phase diagram of a Lead-Tin system. The inflection points of these cooling curves were obtained by melting a series of mixtures of lead and tin at varying compositions. These critical
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Prepared by Leong Yee Pak DESIGN QUESTIONS Below are some suggestions on how to go about in designing an experiment. Understand and remember the various instrument used for measuring the quantities‚ the methods used to produce them and the way to vary them. Guide for Design Questions Identify the variables: the independent variable‚ the dependent variable‚ and any variables or factors to be kept constant. Draw a labelled diagram to show the experimental set up. Ask yourself these
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Chapter one Introducing Mechatronics Objectives The objectives of this chapter are that‚ after studying it‚ the reader should be able to: Explain what is meant by mechatronics and appreciate its relevance in engineering design. Explain what is meant by a system and define the elements of measurement systems. Describe the various forms and elements of open-loop and closed-loop control systems. Recognise the need for models of systems in order to predict their behaviour. ● ● ● ● 1.1 What is mechatronics
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1.According to the kinetic theory‚ both the particles in gases and the particles in liquids have kinetic energy. This energy allows the particles in gases and liquids to flow past one another‚ as shown in Figure 13.5. Substances that can flow are referred to as fluids. The ability of gases and liquids to flow allows them to conform to the shape of their containers. Figure 13.5 Both liquids and gases can flow. The liquid on the left is colored water. The gas on the right is bromine vapor. If a
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travels at about 2/3 the speed of light (FAST in laymen’s terms) the electrons only travel at a person’s walking pace! Circuits: Electrical circuits are designed to take energy from a power supply (battery‚ generator‚ alternator‚ solar cell‚ thermocouple‚ fuel cell‚ . . .) and ultimately deliver the energy to an output (heater‚ light‚ motor‚ TV‚ computer monitor‚ speakers‚ . . .). In some cases the energy is the important part (heaters‚ motors) in other cases it is the information carried and
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Magnesium Oxide: Origin‚ Production and Utilization Magnesium oxide is a basic or alkaline kind of earth metal that naturally originates from seawater. The compound is odorless and colorless that makes it difficult to see by the naked eye. To produce such compound‚ extraction from the seawater by electrolysis and several chemical processes id done. The compound is formed from the thermal processes which make uses of air and oxygen. Magnesium hydroxide is also produced. The versatility of uses of
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How voltmeter and ammeter work Measuring Voltage Measuring the voltage between two points of an electrical current can be done with an instrument called a voltmeter. One type of voltmeter is a direct-current voltmeter. When taking a voltage reading the instrument is placed across the portion of the circuit that is to be measured. Direct-Current Voltmeter The direct-current voltmeter has a horseshoe shaped magnet‚ with a semicircular piece of soft iron attached to each end of the magnet. The iron
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ABSTRACT COOKSON‚ EDWARD JAMES. Development of the Metal Foam Electrical Resistance Heater. (Under the Direction of Dr. Albert Shih.) This thesis presents a novel concept using a radial heating element made from porous Fe-Cr-Al metal foam in an air heater. Electrical resistance heating has been used extensively to convert the electrical energy into thermal energy. An analytic heat transfer model is first developed to estimate dimensions of the heating element. Four prototype Fe-Cr-Al metal
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1. Objective The aim of this laboratory experiment is to analyse the rate of heat transfer losses through convection and radiation separately from a cylindrical glass rod suspended in a pressure vessel. The variation of the dimensionless quantities; Nusselt number‚ Prandtl number and Grashof Number‚ with Pressure are to be analysed graphically as well. The experimental graph of log10(Nu) vs log10(Gr.Pr) should be plotted and analysed against the graph of the empirical equations. 2. Introduction:
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