...in an open storage tank at 82.2°C is being pumped at the rate of 0.379 m3/min from the tank. The line from the storage tank to the pump suction is 6.1 m of 2-in. schedule 40 steel pipe and it contains three elbows. The discharge line after the pump is 61 m of 2-in. pipe and contains two elbows. The water discharges to the atmosphere at a height of 6.1 m above the water level in the storage tank. (a) Calculate all frictional losses ΣF. (b) Make a mechanical-energy balance and calculate Ws of the pump in J/kg. (c) What is the kW power of the pump if its efficiency is 75%? Ans. (a) ΣF = 122.8 J/kg; (b) Ws = -186.9 J/kg; (c) 1.527 kW 2. Nitrogen gas is flowing through a 4-in. schedule 40 commercial steel pipe at 298 K. The total flow rate is 7.40 X 10-2 kg/s and the flow can be assumed as isothermal. The pipe is 3000 m long and the inlet pressure is 200 kPa. Calculate the outlet pressure. Ans. P2 = 188.5 kPa 3. Calculate the pressure at Al Soudah Mountain, taking into the account that air is compressible. 4. In a small domestic fish tank, a 5-watt pump at the top of the tank is used to pump water through a filter. The pump is sucking water from the bottom of the tank at a depth of 20 cm. The tank is 75% filled. The suction pipe size is 1 cm and the discharge pipe is 0.5 cm. the water temperature is 30 0C. Make reasonable assumptions for any missing data. A) Draw a flow sheet for this system. B) Calculate the volumetric flow rate of the pumped water. Hint: A video clip of...
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...Quiz 6 1) (a) Figure 1 below shows the arrangements of a circuit for a hydraulic system. The pump draws oil with a specific gravity of 0.90 from a reservoir and delivers it to the hydraulic cylinder. The cylinder has an inside diameter of 125 mm, and in 15 s the piston must travel 500 mm while exerting a force of 5000 kg. It is estimated that there are energy losses of 3.5 m in the suction pipe and 10.7m in the discharge pipe. Both pipe diameter is 50mm. Calculate: (i) The volume flow rate through the pump [4 marks] (ii) The pressure at the cylinder [4 marks] (iii) The power delivered to the oil by the pump if the pump has 70% efficiency [9 marks] Figure 1 2) (a) Figure 2 shows water flowing from reservoir A to B. If the water surface elevation in reservoir B is 110 m, what must be the water elevation in reservoir A if a flow of 0.03 m3/s is to occur in the cast-iron pipe with gate valve fully open? (Assume ambient temperature) [13 marks] (b) Explain what is the purpose of the gate valve in the pipe system? [4 marks] (c) Draw the HGL and EGL for the pipe system. [4 marks] (d) Propose an improvement to reduce the losses in the pipe system. Justify your answer. [4 marks] Elevation = ?? m A Kent = 0.5 L = 150 m Long radius Bend, 90° flanged Gate Valve Elevation = 110 m L = 40 m D = 60 cm Figure 2 D = 60 cm B Kexit= 1.0...
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...EVKET WLI-90 EVTT3F EVTS BHVSD HVTEB HVS2C ALPHABETICAL INDEX Type Page Type Page Type Page 21 ............................................................ 32 22 ............................................................ 31 AFGS ...................................................... 73 BHVSD ................................................... 57 BHVSF.................................................... 56 CCL-EHV .................................................. 6 CCLS-EHV................................................ 7 EVBCF.................................................... 45 EVBETSH ............................................... 54 EVDCH ................................................... 41 EVDCS.................................................... 39 EVEDST.................................................. 63 EVEDST-90 ............................................. 65 EVEF-D................................................... 84 EVETF .................................................... 15 EVETS .................................................... 49 EVHS ...................................................... 82 EVIS........................................................ 53 EVKES.................................................... 48 EVKET .................................................... 14 EVLCF ...................................................... 4 EVPC ...................................................... 81 EVS2C ......................
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...INSTRUCTIONS FOR COMPLETING AND SUBMITTING THE STATE OF CONNECTICUT APPLICATION FOR EXAMINATION OR EMPLOYMENT (FORM CT-HR-12) PLEASE READ CAREFULLY BEFORE COMPLETING THE APPLICATION GENERAL INFORMATION AND INSTRUCTIONS This application form is the official State of Connecticut Application Form for Examination or Employment effective October 1, 2010. PLD-1 application forms should not be used on or after October 1, 2010. Check the State Employment Pages on the DAS website (http://das.ct.gov/employment )for more detailed information about completing the State Application Form and about state examinations, job opportunities and to sign up for e-mail notification of current exams and job openings. 1. The CT-HR-12 is a PDF document that can be completed on-line or it can be printed and completed manually. If you complete the form on-line, you can save it in your documents for future reference. 2. This application form can be used to apply for currently posted State of Connecticut examinations or currently posted 3. 4. 5. 6. 7. 8. 9. 10. job opportunities (positions/job postings). If you are applying for a currently posted examination, make certain you include the examination title and examination number. If you are applying for a currently posted job/position, make certain you include the position title and position number. Type or print (in ink) all information requested on the application form. It is critical that you complete all sections of the application form...
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...PERSONAL NARRATIVE 1 When taking a look at how my life has changed over the past five years I can truly and honestly say that I would never have expected the things that have happened. Back in June 2007 I was separated from my husband and moved into my own apartment. I was in the United States Navy for six and a half years at that time. My divorce was finalized in January 2008 and I deployed to Afghanistan in March 2008, for eight months. After coming home from a long deployment, I had orders to move to Lemoore, California. This area is nothing but farm lands and I did not like that at all. I was born and raised in Southern California and enjoyed the fast-paced life that I was living. It is amazing how things have changed. In July 2011 I was honorably discharged from the United States Navy and I moved back in with my mother and two younger sister. Growing up we lived in a condo in Diamond Bar, California, but that all changed over time. The same time that I got out of the military, myself, my sisters and my mother had to move out of our condo and into a two bedroom apartment. Talk about a huge change in life. This move has not been easy for any of us. There is no privacy and we all have to share the living space. I share a bed with my middle sister and my mother shares a bed with my youngest sister. I never thought that I would be unemployed for this long, but it has been over a year since I got discharged. It seems like nobody is hiring right now...
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...Few good man Time from time you may hear stories of abuse by the military justice "system". There are multiple destroyed and financially devastated families out there suffering heartbreak and loss at the hands of an uncaring, unfeeling and unjust process which makes a mockery of our Bill of Rights. Military justice for the majority is prefabricated according to the wishes of the local Commander, and the "trial" or "court-martial" is tantamount to a pre-ordained verdict of GUILTY. How could any court proceeding be considered fair when the "convening authority," by right of title, is given the power to select the judge, the jury and defense and prosecution attorneys? It may go "unsaid," but the implication is very clear - if the convening authority "sees fit" to bring about a court-martial, then the accused can be assumed to be guilty. What's special, or even topical, about A Few Good Men movie is it speaks to how military honor can be so readily suborned by the authoritarian impulse. And second, how the same honest pride - not to mention competence - is necessary to bring such posturing would-be tyrants to justice. The main issue the movie touches upon is military justice. A good marine abides by the following code: 1. Unit 2. Corps 3. God and 4. Country For this code to be at its effective best, it must be governed by truth and justice. What happens when truth and justice fail to be active participants of this code? Justice has been defined in many ways...
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...stability. But ceramic caps have a very less ESR and are useful in bypassing high frequency noise but cannot provide the compensation to maintain the loop stability as the dominant zero is at a very high frequency. So LDO’s with ceramic output capacitors have an additional series resistor R comp which performs the functionality of ESR with the C comp to provide the additional zero required for compensation. Load dump occurs when the battery is disconnected when it is being charged by the alternator. A huge voltage spike of 120V is generated and can take up to 400ms to decay. Signal diode arrays can also be used in digital and computer circuits to protect high speed data lines or other input/output parallel ports against electrostatic discharge, (ESD) and voltage transients. By connecting two diodes in series across the supply rails with the data line connected to their junction as shown, any unwanted transients are quickly dissipated. Enum is used to define variables of your own. ------------------------------------------------- enum Security_Levels { black_ops, top_secret, secret, non_secret }; // don't forget the semi-colon ; ------------------------------------------------- int main( int number_of_args, char* arg_list[] ) { Security_Levels my_security_level = top_secret; if ( my_security_level == black_ops ) ...
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...DECLARATION I, [type your full first names and surname here], declare that the contents of this dissertation/thesis represent my own unaided work, and that the dissertation/thesis has not previously been submitted for academic examination towards any qualification. Furthermore, it represents my own opinions and not necessarily those of the University. Signed __________________ Date _________________ Abstract Windsor Airmotive Asia Pvt Ltd is the leading repair and overhaul shop for CFM56-3/-5/-7 series turbine engine components. During development of a new repair scheme, to replace the inner inducer and outer inducer of the Forward Inner Nozzle Supports (FINS), a major challenge was encountered at the Electric Discharge Machine (EDM). A trial done on a scraped part revealed that 112 vanes have to be aligned before it can be machined by EDM to the inducer. By introducing a semi-automated machining fixture, the alignment of the vanes will be made easier, on top of increasing the utilization of the EDM by 20%. The aim of this project is to develop a machining fixture for the EDM so that the alignment of 112 vanes will be made easier.By developing this fixture, the company can expect to reduce the scrap rate of FINS. These FINS are often scraped because of the inducer wall rub marks that exceed the limits given in the engine manuals.This will also be beneficial to the customers by helping them to reduce their overhaul cost for the engine rebuild. This will...
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...Module 9 Non conventional Machining Version 2 ME, IIT Kharagpur Lesson 39 Electro Discharge Machining Version 2 ME, IIT Kharagpur Instructional Objectives (i) (ii) (iii) (iv) (v) (vi) (vii) (viii) (ix) (x) (xi) (xii) (xiii) (xiv) (xv) (xvi) (xvii) (xviii) (xix) Identify electro-discharge machining (EDM) as a particular type of non-tradition processes Describe the basic working principle of EDM process Draw schematically the basics of EDM Describe spark initiation in EDM Describe material removal mechanism in EDM Draw the basic electrical waveform used in EDM Identify the process parameters in EDM Describe the characteristics of EDM Identify the purpose of dielectric fluid in EDM List two common dielectric fluid Analyse the required properties of EDM tool List four common tool material for EDM Develop models for material removal rate in EDM Identify the machining characteristics in EDM Analyse the effect of process variables on surface roughness Analyse taper cut and over cut in EDM Identify different modules of EDM system Draw schematic representation of different electrical generators used in EDM Analyse working principle of RC type EDM generator 1. Introduction Electro Discharge Machining (EDM) is an electro-thermal non-traditional machining process, where electrical energy is used to generate electrical spark and material removal mainly occurs due to thermal energy of the spark. EDM is mainly used to machine difficult-to-machine...
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...tooling (micro-tools, e.g. endmills in the 50 to 500 micron diameter range), small undeformed chip thicknesses and feedrates (submicron to a few microns) and speed settings (50K to 200K RPM might not be uncommon) that would be considered technologically infeasible at the conventional macro-scale. As a consequence, the principal distinction between Macro and Micro-Machining operations emerges and manifests itself as the dominance of ploughing and rubbing phenomena at the cutting edge over shearing and the necessity to take micro-structural effects into consideration. (2) The second viewpoint approaches the definition of the Micro-Machining regime from the standpoint of the magnitude of the undeformed chip thickness being removed in the cutting process. It is difficult to define a clear-cut value of the undeformed chip thickness that would differentiate the macro-, micro/meso- and nano-scale cutting regimes since other factors such as grain-structure, cutting edge radius, etc., also come into play. The authors of this report would suggest the following classification: Miniaturization is the order of the day. Until recently a decade ago traditionally watch parts...
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...Colorfastness refers to the resistance of color to fade or bleed of a dyed or printed textile materials against water, light, rubbing, washing, perspiration etc. to which they are normally exposed in textile manufacturing and in daily use. Colorfastness to Rubbing Colorfastness to rubbing test is designed to determine the degree of color which may be transferred from the surface of a colored fabric to a specify test cloth for rubbing (which could be dry and Wet). Crockmeter is the main equipment used in this test. Crockmeter uses a standard pressure and rubbing motion to provide reliable and reproducible test results. Specimens are positioned on the base of the Crockmeter and held in place with the sample holder. The rubbing action is provided by an acrylic "finger" which moves in a straight line with each complete turn of the crank. The reciprocating load arm is weighted to provide a constant 9N load on the sample at all times and a mechanical counter keeps track of completed cycles. Then, the result of the specimen is evaluated using the grey scale of staining. Colorfastness to Washing The main test method of the colorfastness to washing is carried out called AATCC standard detergent WOB (without optical brightener). The test measures the resistance to water of any colored textiles. Launder-moester is the main equipments used with the help of grey scales. Testing procedure (Usages) 1. Attach the multifiber fabric to specimen by sewing or stapling. 2. Place the sample...
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...Sheri Meyer Vista Health Fort Smith, Arkansas July 14, 2013 I live in Fort Smith, Arkansas, and the only halfway house that we have is Harbor view, or better known to others as Vista Health. Vista Health is located at 10301 Mayo Drive, Barling, AR 72923. The telephone number is (479) 494- 5700. A friend of mine from elementary school works there and she is who I interviewed to find the facts out about Vista Health. Her name is Hannah Yarborough. Vista Health looks forward to assisting anyone that is in need. The information that you will read about in this interview will help people understand the guidelines and general information so that if they are ever in need of vista they will be comfortable. Vista Health’s goal is to provide an environment in which your problems and concerns can be addressed so that a person can focus on their treatment. Vista believes this can be accomplished with a structured, consistent treatment program. This structured program environment is designed with group activities, which will be beneficial to one’s mental wellness. A member of Social Services will meet with an individual one on one outside of your group activities. Vista’s treatment team of professionals includes the individual’s physician, physician assistant, nurses, social services staff and treatment staff, recreational therapists and other health professionals. Treatment at Vista Health begins with a thorough examination of the problems and concerns an individual is experiencing...
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...Process management Research Paper Process management Research Paper Contents Title: 3 Abstract: 3 Introduction/Background 4 The Process 5 Process State 7 Process Scheduling 8 Methods 9 Results and findings 10 Process Creation 10 Threads 12 Scheduling 14 Synchronization 15 Buffering 16 Deadlock Handling 17 Related Work 18 Conclusion and Future Work 19 References 20 Appendix 20 List of your data 20 Design/Implementation 21 Source Codes 24 Process Creation 24 Threads 24 Peterson’s Algorithm 25 Bakery Algorithm 26 Softwares 26 Title: Process Management Abstract: A process is usually called as a program in execution. A process needs certain assets, including CPU time, memory, documents, and I/O gadgets, to achieve its undertaking. The working framework is in charge of the accompanying exercises regarding process administration i.e. process creation and erasure, process suspension and resumption (scheduling), procurement of instruments for process synchronization and process correspondence. Process administration is normally performed by the bit. In numerous cutting edge working frameworks, there can be more than one occurrence of a system stacked in memory in the meantime; for instance, more than one client could be executing the same project, every client having separate duplicates of the system stacked into memory. With a few projects, it is conceivable to have one duplicate stacked...
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...Who is the creater of CP/M? [Kildall] Who is the head of the Multics project. [Carbato] Which OS’s process scheduler reduces priority and increases quantum. [CTSS] Which one is the difference between a semaphore and monitor. [Last choice] If a system has 16 drives and each process can have 4 drives. What is the maximum number of n that the system is deadlock free. [5] Given the sequence below which processes will cause a page fault. (for FIFO – LRU) Write a loop that would create 10 child processes. (No more than 10). If a file is shared by two processes, can have read-only and the other read-write access. If yes how, if not what prevent it. What are some of the security features in UNIX or NT. How does NTFS directory system work. How does UNIX directory system work. Pick a Unix UNIX process scheduler and explain how (not why or when) it favors I/O bound processes to CPU bound processes. Explain and compare I/O software (programmed, interrupt, DMA). What is the problem with RAID4 and explain how RAID5 solves the problem. Disk arm scheduling algorithms readuce read time but what does Linux additionally do. How does Workingset Clock algorithm work. If seektime is 8msec and each track is 160KB. What is the access time to read 4KB. Couffman listed four requirements for a deadlock. Describe fourth one and how to prevent it. What are the advantages of inverted page tables. What is a soft link. Implement soft link and hard links...
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...Fall 2011 COMP 3511 Homework Assignment #1 Solution Handout Date: Sept. 22, 2011 Due Date: Oct. 6, 2011 Name: ______________ ID: ___________________ E-Mail: _____________ COMP 3511 L __ Please read the following instructions carefully before answering the questions: You should finish the homework assignment individually. There are a total of 4 questions. When you write your answers, please try to be precise and concise. Fill in your name, student ID, email and Section number at the top of each page. Submissions without this information will be discarded. Please fill in your answers in the space provided, or you can type your answers in a Word file. Homework Collection: the hardcopy is required and the homework is collected at the collection box (#6, #7) or in class. (22 points) Please answer the following question in 2-3 sentences 1) (8 points) What is the benefit of Direct Memory Access (DMA)? Is interrupt still needed when a DMA is used? Can DMA operations possibly interfere with CPU operations? 1. Answer: This frees up the CPU during I/O operation, so the CPU can be better used; Or to improve the CPU utilization (3 points). Interrupt is still needed when the DMA operation is completed in order to inform the CPU (2 points). If a DMA and CPU access memory at the same time, it can interfere with each other (3 points). 2) (4 points) Why is it necessary to separate user mode and kernel mode? Answer: This provides some level of protection so that user programs...
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