...0.8 1.6 3.2 6.3 12.5 25 50 100 0.1 −S 0.2 −S 0.4 −S 0.8 −S 1.6 −S 3.2 −S 6.3 −S 12.5 −S 25 −S 50 −S 100 −S 200 −S ■Types and symbols of geometrical tolerances 400 −S Standard value of reference length （mm） 0.25 0.8 2.5 8 Type of tolerance Straightness tolerance 25 Finishing symbol − Forging Casting Flatness tolerance Fine Fine Shape tolerances Die casting Hot rolling Cold rolling Drawing Circularity tolerance Cylindricity tolerance Extruding Symbol Definition of tolerance range Tumbling Profile tolerance of line Sandblasting Rolling Fine Carving （including slotting） Machining methods Precision boring Fine Filing Fine Round grinding High Medium Rough Fine Boring Drilling Reaming Fine Broach grinding Orientation tolerances Fine Milling Parallelism tolerance Perpendicularity tolerance Angularity tolerance Fine Shaving Medium Fine Hone finishing Super finishing High Fine Buffing Fine Paper finishing Fine Lapping Rough Positional tolerances Fine Grinding Positional tolerance Fine Symmetry Fine Liquid honing Coaxiality tolerance or concentricity tolerance Surface rolling Electric discharge carving WEDM （Wire electric discharge machining） Fine Chemical polishing Electrolytic abrasion Circular...
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...thick 92 Grade 2. Output Constant k 1.3 3. Voltage per turn Et 9.19V 4. Circumscribing circle diameter d 162.92 mm 5. Dimensions a 123.84 mm b 309.58 mm 6. Net iron area Ai 34.506×103 mm2 7. Flux density Bm 1.2 Wb / m2 8. Flux ɸm 0.041407 Wb 9. Weight 144.8 Kg 10. Specific iron loss 0.8 W/ Kg 11. Iron loss 115.84 W YOKE 1. Depth of yoke DY 123.84 mm 2. Height of yoke Hy 309.58 mm 3. Net Yoke area 41.4×103 mm2 4. Flux Density 1 wb/ m2 5. Flux 0.041407 Wb 6. Weight 240.9 Kg 7. Specific iron loss 0.75 W/ Kg 8. Iron loss 180.67 W WINDOW 1. Number 2 2. Window space factor Kw 0.2439 3. Height of window Hw 165.65 mm 4. Width of window Ww 82.85 mm 5. Window area Aw 13.72×103 mm2 FRAME 1. Distance between adjacent limbs D 245.77 mm 2. Height of frame H 744.63 mm 3. Width of frame W 413.38 mm ------------------------------------------------- 4. Depth of frame Dy 123.84 mm ------------------------------------------------- Windings L.V H.V 1. Type of winding connections Sandwiched Sandwiched 2. Connections Star Delta 3. Conductor Dimensions – bare 13×2.6mm2 Diameter – 0.71 mm Insulated 13×3.1 mm2 Diameter – 0.755 mm...
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... y = k + r sinθ Now let us see how these equations are derived. Using figure 4.1, in right angled triangle ΔPCQ, cosθ = CQ/CP i.e cosθ = (x-h )/r x – h = r cosθ x = h + r cosθ Similarly, sinθ = PQ/CP i.e sinθ = (y-k )/r y – k = r sinθ y = k + r sinθ 4.2. Algorithms for scan converting a circle Circle is a symmetrical geometric shape. It can be drawn by using two way, four way or eight way symmetry. There are various algorithms available that helps in scan converting a circle and each of them employ some symmetry. Here is a brief description about symmetry of the circle: Two-way symmetry: In this symmetry, we calculate points for only half of the circle (i.e. semicircle). Since it is symmetrical about its diameter, we just copy those points to other semicircle to make it a complete circle. For example, if we are scan converting a circle about x- axis, then each x-value will have two corresponding y-value ( whose magnitude is same but one is above x- axis and other is below x-axis). So here we need to find single pixel position and other will be foung by inverting the sign of its y-value. Two way symmetry is shown in figure 4.2. Four-way symmetry: A circle deals with greater symmetry. In four way symmetry, instead of computing values for semicircle, we just need to find the values for quadrant of the circle. We know that there are four quadrants in a circle and each value in first quadrant has three corresponding values in other three quadrants....
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...1. A common food is found to contain .00125% iron. The serving size is 87.0 grams. How many milligrams of iron is in one serving? (Note the change from grams to milligrams!) To solve this problem, the first thing I did was to read through it several times to determine what it is asking. My interpretation was that I needed to find the grams of iron in this food and then convert it to milligrams. To do this, the first thing I did was to convert 0.00125% of iron to a decimal by moving the decimal point two places to the right which gave me a decimal of 0.0000125. I then multiplied 0.0000125 by 87.0 grams to find the percent of iron in a serving of food. I plugged 0.0000125 x 87.0 into a calculator and got the answer of 0.0010875 which means that a serving of the food has 0.0010875 grams of iron. The last step I took was to convert 0.0010875 grams to milligrams. I knew that there are 1,000 milligrams in a gram, so I multiplied 0.0010875 by 1,0000 on a calculator to get 1.0875. So the final answer to problem one is there are 1.0875 milligrams of iron in a serving size of 87.0 grams. After I had gone through solving the problem in my typical fashion, I also solved the problem using an algebraic number sentence. The number sentence I created was 87.0 • 0.0000125 • 1,000= x. In this number sentence, x stands for the unknown which is the milligrams of iron in a serving. Following the order of operations 8.7 and 0.0000125 are multiplied to find the grams of iron in a serving...
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...cylinders were measured on a balance scale to determine the mass, in grams, of each of the cylinders (Edwards, 2011). The diameter and height of the cylinders were measured in centimeters using a vernier caliper, which allows for a more accurate measure of the outer and inner diameters. In part I of the experiment, 6 aluminum cylinders were for mass, diameter, and height. A balance scale and a vernier caliper were used to obtain the appropriate measurements (Edwards, 2011). The volume of each of the cylinders was determined using the equation V=(d2/4)h. A graph was constructed to portray the relationship between the mass and the volume of the cylinders (Figure 1). The slope of the best-fit line corresponds to the experimental average densities of the aluminum cylinders. The slope of the line was 2.787 g/cm3, which shows a slight deviation of 3.2% from aluminum’s actual density of 2.700 g/cm3 (Density of Metals, 2010). The experimental values gathered from part II of the experiment, for iron, brass and copper showed the greatest percent error. Copper showed the greatest deviation from it’s theoretical value having a percent error of 14.7%, while iron showed a percent error of 2.41%. Since both of them had a percent error of greater than 1%, it accounts for the uncertainties of the measuring instruments. For part III of the experiment, when measuring the volume of the irregular-shaped lead sample, the technique of displacement of water in a graduated cylinder was used...
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...Operating Instructions Proline Promass 83 HART Coriolis Mass Flow Measuring System 6 BA00059D/06/EN/14.12 71197481 Valid as of version V 3.01.XX (Device software) Proline Promass 83 Table of contents Table of contents 1 1.1 1.2 1.3 1.4 1.5 Safety instructions . . . . . . . . . . . . . . . . 5 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation, commissioning and operation . . . . . . . . Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Notes on safety conventions and icons . . . . . . . . . . . 5 5 6 6 6 5.2 5.3 2 2.1 Identification . . . . . . . . . . . . . . . . . . . . 7 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.1 Nameplate of the transmitter . . . . . . . . . . . . 8 2.1.2 Nameplate of the sensor . . . . . . . . . . . . . . . 9 2.1.3 Nameplate for connections . . . . . . . . . . . . 10 Certificates and approvals . . . . . . . . . . . . . . . . . . . 11 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . 11 5.4 2.2 2.3 3 3.1 Installation . . . . . . . . . . . . . . . . . . . . . 12 Incoming acceptance, transport and storage . . . . . . 3.1.1 Incoming acceptance . . . . . . . . . . . . . . . . . 3.1.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . 3.1.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation conditions ...
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...Engineering Graphics & CAD Assignment Content Content | Page | Content | | Abstract | | Introduction | | Procedure | | Drawing | | Discussion | | Conclusion | | Reference | | Abstract This assignment is aimed to show how does a product looked like when it is dismantled and in this project, we are doing rice cooker. By dismantling the rice cooker, we are required to produce the sketches of any 12 parts of the rice cooker using multi-view and isometric techniques, and also 2D drawing using Auto-CAD. In other words, this project also helps us to be a step closer in becoming engineers by teaching us how to implement the engineering drawing techniques from sketching and then translating those sketches into the final product. In this project, 3 of us are required to produce drawings of 12 parts found in a rice cooker. We are also required to measure the parts using suitable apparatus in order to obtain the most accurate measurements possible. After getting the measurements of each dimension, we are required to sketch the parts in multi-view and isometric perspectives. We are, then, required to make 2D drawing of each part using Auto-CAD with its dimension. Introduction Rice cooker is an electric kitchen appliance that is used to boil or steam rice. The essential components that are in the rice cooker are the heating element, the aluminium inner bowl, the ceramic-based outer body, the cover, the switch, the fuse and the heat sensor. Background ...
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...ABSTRACT Trees are an important part of every community. Trees increase our quality of life by bringing natural elements and wildlife habitats into urban settings. Many neighborhoods are also the home of old trees that serve as historic landmarks. The tree observations goal is to help people maintain the health of their community and their state’s trees and forest. INTRODUCTION Trees have supported and sustained life throughout our existence. Different species display an endless variety of shapes and forms. In this experiment I had tested the ability to present information about factors affecting the health and measurements of trees. METHODS I used a Biltmore stick to measure the diameter (DBH) of the tree. I also had to find an area with at least twenty trees for measurements, recorded the information I obtain on a tree observation sheet. MATERIALS Biltmore stick, tree observation sheets, an area with twenty trees, pencil RESULTS The species of trees was from a neighborhood called Green Acres. Measurements taken at the site; shown that Maple/Boxelder trees in the site was identified as a more common species in the area and illustrated in good health with minor problems. For the other selected trees, no significant difference in circumference was found between all other trees because of the weather. DISCUSSION Overall the best time to measure trees is between June and September other observations can be made anytime during...
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...Experimentation Critique of The Balance Evaluation Systems Test to Differentiate Balance Deficits RES/320 Patti Moser July 5, 2010 CERTIFICATE OF ORIGINALITY: I certify that the attached paper, which was produced for the class identified above, is my original work and has not previously been submitted by me or by anyone else for any class. I further declare that I have cited all sources from which I used language, ideas and information, whether quoted verbatim or paraphrased, and that any and all assistance of any kind, which I received while producing this paper, has been acknowledged in the References section. This paper includes no trademarked material, logos, or images from the Internet, which I do not have written permission to include. I further agree that my name typed on the line below is intended to have, and shall have the same validity as my handwritten signature. Student's signature (name typed here is equivalent to a signature): Sherri L. Eveland___________________________ ___ Experimentation Critique of The Balance Evaluation Systems Test to Differentiate Balance Deficits This article presents the theoretical framework, interrater reliability, and preliminary concurrent validity for this new instrument, the Balance Evaluation Systems Test (BESTest). The goal of this study was to develop a clinical balance assessment tool that aims to target 6 different balance control systems so that specific rehabilitation approaches can be designed...
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...Mr. Boone vs. Zoom Car Company Daniel Boone purchased a vehicle from Zoom Car Company with a compass in the dashboard for easy navigation. Unfortunately, the compass was faulty and led Mr. Boone to a high crime area where he was dragged out of his car and severely beaten up. Who should be responsible for Mr. Boone’s medical bills? Did Zoom Car Company know that the compass was faulty and didn’t tell the purchaser? Did Corrigan Rulers Compasses and Slide Rules, Inc. know there was an issue with the product? If so, why did they recall the product? If they did recall the product why didn’t Zoom Car Company take out the compass? Did Zoom Car Company install the compass correctly? Why didn’t Mr. Boone realize he was in a high crime part of town? Imagine if this was you, you were following your compass in an area you are unfamiliar with when all of sudden a gang member who is armed drags you out of your car in the middle of the street where he and his friends start violently striking you over and over again. After they are done hitting and kicking you, you lay there on the ground in pain and bleeding. You are wondering where you are and if anyone will come to help you and you ask yourself “Why did this happen to me?” Mr. Boone didn’t realize that turning right instead of left would lead him to that fate. He thought the brand new compass in his brand new car he just bought would work properly. Who thought that a new equipment that just got installed would not work?...
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...DQ 1 How would you define research? What is the purpose of business research? How has the Internet changed the quality and quantity of research? Kapil C. Mathur, MBA Research can be defined as the search for knowledge, or as any systematic investigation, with an open mind, to establish novel facts, solve new or existing problems, prove new ideas, or develop new theories. Research can be divided into different steps in order to understand the whole process more in depth. The first step towards conducting research is to observe. Consistst of the subject area of ones interest and following that subject area to conduct subject related research. The subject area should not be randomly chosen since it requires reading a vast amount of literature on the topic to determine the gap in the literature the researcher intends to narrow. A keen interest in the chosen subject area is advisable. The research will have to be justified by linking its importance to already existing knowledge about the topic. The next step is to create a hypothesis. This is where you create a testable prediction of outcome between 2 or more variables. The third step is to gather data which supports yor hypothesis. The fourth step is to analyze the data you have gathered. This involves breaking down the individual pieces of data in order to draw conclusions about it. the last two steps go somewhat hand-in-hand. These two steps are testing your hypothesis and drawing a conclusion from your findings. Business...
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...volume. It uses some particular apparatuses from the lab to make measurements more accurate and precise guided by the professor in charge of the activity. III. Materials Materials and Apparatuses: Metal block, Metric ruler, Small pebbles,and 10.0% (m/v) table sugar solution Platform balance, 50-mL graduated cylinder, 25-mL graduated cylinder, 50-mL beaker, and medicine dropper IV. Results 1. Why chemicals are never placed directly on the balance pans? Because you need to make sure chemicals are properly and safely put on and back so you wouldn’t have any trouble when you’re done. Also it was a requirement for you to be safe while measuring something. 2. Why must objects be weighed at room temperature? It should be on a fair temperature since it may affect the accuracy of the measurement. The movement of molecules while measuring may be affected by the temperature so it needs to be in balanced temperature. 3. What would be the effect on the density of a solid whose volume was determined by water displacement if a. Air bubbles were present in the water? The measurement will be inaccurate because of the air going out of the object. b. The solid was not completely immersed? The measurement in displacement in water won’t be accurate if the object is floating or not completely inside the liquid. 4. Find out from your instructor the accepted...
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...or effectively, nor whether any processes need to change. A low frequency rate only means that demand for that space was low during the period of time that was measured. However, when frequency rate is coupled with an occupancy rate, how often and how many occupants are occupying a space during the times the space is populated becomes visible. A low utilization rate may mean that processes need to change. Strategic Importance of Space Utilization Strategic Goals of Measuring Space Utilization: * Identification of the balance between space needs and space provision * Establishment of a basis for space allocation * Identification of best practices; standardization of processes * Observation of space utilization efficiency * Identification and highlighting of areas of under-use and over-use * Identification of the gaps between timetabled use and actual use * Recognition of variations and trends in utilization over time The Value of Measuring Space Utilization: * Measuring utilization provides value in the form of visibility * Visibility of past and current utilization allows for a more strategic decision making process * Strategic decision making is an element that is necessary in order to increase/maximize...
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...Temperature and Response time measurement Abstract In this experiment, a Resistive Thermal Device (RTD) and thermocouple were calibrated for first order measurement. Then, the response times of the RTD and thermocouple sensors were calculated. After performing this experiment, it was found that the time constants for the RTD were found to be -78.7 for cold to hot and 17.39 for hot to cold. The time constants for the thermocouple were found to be 3.519 for cold to hot and 2.64 for hot to cold. The rise times for the RTD were found to be 7.39 for cold to hot, and 7.9 for hot to cold. The rise times for the thermocouple were found to be 1.14 for cold to hot, and 1.27 for hot to cold. The error band for the RTD was found to be ±.0075, and the error band for the thermocouple was found to be ±.3887. Nomenclature T Time τ Time Constant E Error Band INTRODUCTION A Resistive Thermal Devices is a sensor used to measure the temperature by correlating the resistance of the RTD element with temperature. An RTD most commonly consists of a length of fine coiled wire wrapped around a glass or ceramic center. The element of the RTD is made of a pure material so its resistance can be calculated at various temperatures [1]. A thermocouple is that consists of two conductors which produce a voltage proportional to a temperature difference between either end of the pair of conductors. This allows for the measurement of the temperature at broad ranges...
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...Validity, Reliability Equals Credibility Teresa McNally XBCOM/275 08/25/2013 Dr. Murad Abel Validity, Reliability Equals Credibility “The volume of your voice does not increase the validity of your argument” (Maraboli, 2010). In order for an assessment to be sound, they must be free of bias and distortion. Reliability and validity are two concepts that are important for defining and measuring bias and distortion. To have the credibility that you deserve you have to have reliability and validity in everything you do. (Kimberline & Winterstein, 2008). Reliability refers to the extent to which assessments are consistent. Just as we enjoy having reliable cars, we strive to have reliable, consistent instruments to measure student achievements. Another way to look at reliability is the kitchen scale. If at 6 am in the morning set a bag of apples on the scale and it weighed 5 lbs., it will also say it weighs 5 lbs. at 10 am, if you have not changed anything in the bag, that would mean your scale is reliable and it would have credibility. (Kimberline & Winterstein, 2008). Validity refers to the accuracy of an assessment-whether or not it measures what it is supposed to measure. Even if a test is reliable, it may not provide a valid measure. Let’s imagine a bathroom scale that consistently tells you that you weigh 130 pounds. The reliability (consistency) of this scale is very good, but it is not accurate (valid) because your actual weight is 140 pounds. ...
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