| Subject | Date Asked | Expert |
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| self powered | 7/7/2006 | Al Hall |
Q: Is it possible to use an electric motor to spin an alternator that would then be used to power the ...
A: What you are asking about is called a "Perpetual Motion" machine. This can not exist. No energy is ...
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| help | 6/28/2006 | Al Hall |
Q: I am studying electrical and computer engineering in a Greek university. My studies last 5 years, ...
A: 1) I think that your guidance councilor at school could answer this question much better than I. I ...
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| Turbine and hot enviroment | 6/10/2006 | Al Hall |
Q: I have a general question about Turbines. We live in very environment; the temperature reaches 49 ...
A: I have worked with several steam turbines that fununction very well in very hot climates as you ...
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| geothermal loop | 6/8/2006 | Al Hall |
Q: I have a 16KW geothermal heat pump and I want to calculate the length of the horizontal closed loop ...
A: Regardless of the size of heat pump, this is simply a heat transfer problem. You need to realize ...
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| Stress Concentration | 5/25/2006 | Pat March |
Q: Good day and thank you, My problem is to find if the stress concentration on the mounting plate ...
A: Howdy Aneil, To me "stress concentration" is an increase in stress caused by holes, reentrant ...
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| Mechanical gears | 5/12/2006 | Pat March |
Q: I will try to be very brief. This might be too time consuming to answer but I thought you might be ...
A: Your gear ratio is 10800 to one. Input diameter = 30 inches. Output diameter = 2 inches max. To do ...
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| wetted perimeter | 5/12/2006 | Al Hall |
Q: I have two questions: 1- what is the equation used to calculate the wetted perimeter for a sphere? ...
A: I do not usually do homework questions, if this is what it is. If I understand your problem ...
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| The future of boiler engineering | 5/8/2006 | Al Hall |
Q: I am an 18 year old college student who is thinking of going to engineering school to get my lisence ...
A: I did not really see a question here, but I think I know the questions that are going through your ...
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| Mechanical Designer vs. Technical Management | 5/5/2006 | Aroosh Shahbazian |
Q: I am doing my Bachelors of Science Degree in Technical Management from Devry University, I am about ...
A: I would strongly recommend that to learn how to work with CATIA instead of AUTO-CAD, most of ...
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| Fluid Dynamics | 4/19/2006 | Al Hall |
Q: I wasn't sure if you could answer this for me, but I've tried looking everywhere for this ...
A: Im afraid that this is outside my expertise. I would suggest visiting somewhere where they are ...
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| Cooling Channel Design | 4/4/2006 | Al Hall |
Q: Al, I have a cooling channel design question that I'd appreciate some help with. We have a reactor ...
A: I would like to assist you with your problem, if I could. I'm afraid that I would like to know a ...
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| boiler audit | 3/10/2006 | Al Hall |
Q: Sir I am doing an energy audit in a milk production plant.I am struck with a problem of ...
A: well, efficiency is always defined as (what you want)/(what you had to pay for to get it). So, in ...
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| Design and manufacturing a safety wheel | 3/6/2006 | Pat March |
Q: March, I am trying to rebuild a safety wheel for a walker. the existing prototype uses the ...
A: Sara, a couple of thoughts occur to me. First, if your wheels are metal, a hefty magnet would ...
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| New Mechanical Engineer | 2/27/2006 | Al Hall |
Q: AL hall, i just joined a Petrochemical Company as a new mechanical engineer in Mechanical ...
A: Al Qutaim, First, I see that you are of arabic decent by your last name, Al Qutaim, "of the Qutaim ...
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| electric connections | 2/26/2006 | Al Hall |
Q: Electrical connections used to be simple, with 2 wires and a non-polar plug. Now however, ...
A: Well, Im not going to try to fool you. Electricity is my weak point. I do know this. It is not a ...
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| repaired floor trusses | 2/24/2006 | Al Hall |
Q: We have recently put an offer on a 6yr. old home that is 3300 sq. ft. and the home inspection came ...
A: Good question. First, do you know what caused the damage in the first place? Are you sure that this ...
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| mechanical engineering | 2/23/2006 | Al Hall |
Q: We have a open ended pipe, a metered hose is attached to the closed end bottom with 20 CFPM going ...
A: The fluid in question is air, you say. That makes a difference because the problem now becomes a ...
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| mechanical engineering | 2/23/2006 | Al Hall |
Q: We have a open ended pipe, a metered hose is attached to the closed end bottom with 20 CFPM going ...
A: If this is not a homework question, then I must tell you that I do not yet understand the system for ...
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| interview from a high school student | 2/2/2006 | Al Hall |
Q: If you are a Mechanical Engineer: 1: what is the starting salary 2: can you change/control hours ...
A: 1) Starting Salary is more than other engineering, but less than others. Present day, I am not aware ...
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| Nothing Technical | 1/19/2006 | Pat March |
Q: I am a Mechanical Engineering Student at Brigham Young University, am working on an English Paper ...
A: Howdy Jonathon, 1. No communities any more. Used to belong to Society of Plastics engineers. 2. ...
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| mechanical engineering | 1/4/2006 | Al Hall |
Q: what did you like best about the job, what did you dis like about the job, would you ever do the ...
A: I like computer modeling power plants. This has been my career for over 23 years now. I have grown ...
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| civil engineering?? | 1/4/2006 | Al Hall |
Q: I'm a study of secondary school..can i know more bout civil engineering? i would like to get some ...
A: Well, I am not a Civil Engineer, but have a good understanding of what Civil Engineers do as part of ...
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| class 1,2,3 threads | 1/2/2006 | Pat March |
Q: I am looking for the formula for finding the pitch diameter of class 1, 2, 3 screw threads on the ...
A: This is trickier than it looks at first. Referring to Machinerys Handbook, I find a defniion of a ...
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| design | 1/2/2006 | Pat March |
Q: What type of raw material (newspaper, clay, and bubble wrap) would keep an egg from breaking if ...
A: To keep an egg from breaking when dropped, it must be cushioned such that it is decellerated slowly, ...
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| Hydraulic pump | 1/2/2006 | Al Hall |
Q: "I wondered if this had been done before and if not, do you think it would work? If there is a ram ...
A: I am not a Hydraulics expert, but I am quite sure that it has been done before. I have seen ...
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| about design and automobile | 12/14/2005 | Kalyanasundaram R |
Q: sir i would like to do m.tech in automobile engineering. but some of my friends told me that ...
A: If you are interested in automobile engineering,I advise that you get organised for it. There is ...
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| Heater sizing for a geothermal application | 12/5/2005 | Al Hall |
Q: We are considering using dry-wells for providing cooling to a building. The dry-well will contain a ...
A: OK. I have some experience with ground coupled heat pumps using a well as you describe. (its been a ...
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| how to design a new product? | 11/21/2005 | Kalyanasundaram R |
Q: how to design a new prduct? what are the basic considerations( conceptual design to ...
A: Product is an object or an assembly to meet required functions. To conceptualise, the first step is ...
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| problem with well | 11/17/2005 | Al Hall |
Q: no one seems to be able to answer this so i thought i would try someone with an engineering ...
A: A pump normally can only produce a specified amount of pressure (or head). The system requires a ...
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| universal joints | 10/31/2005 | Pat March |
Q: What is the greatest angle a single universal joint will drive a shaft? I want to replace a double ...
A: Howdy Dave, There is no exact limit on the angle when using only one universal. The effect is that ...
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| about full information of gears | 10/24/2005 | Pat March |
Q: he llo my name is suhbat ali i from pakistan im student of mechanical engg: final year i want to get ...
A: Your question asks for more information than I will be able to give you. The topic of gears is ...
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| Straw Structure | 10/18/2005 | Pat March |
Q: My class has been assigned to build a structure made of no more than 25 drinkig straws that can ...
A: It is elementary that the best shape will be one or more tetrahdra. Can you connect straws end to ...
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| project | 10/1/2005 | Al Hall |
Q: I have to make a roller coaster in a box for a project. You have to drop a marble through a hole in ...
A: This sounds like a very interesting project. Can you make the marble lighter so it has less ...
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| Mechanical Engineering | 9/22/2005 | Al Hall |
Q: What is the difference between a Bsc in Engineering or Bachelor of Engineering? If I decide to do ...
A: Good question. I can answer you, but the one to ask this question is really the guidence councilor ...
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| Overcome Pump Prime Limitation | 9/16/2005 | Kalyanasundaram R |
Q: Location Questa New Mexico: Last winter my well pump began sucking sediment. The well's water level ...
A: I think that you can use trash pump directly. I presume that the well is sufficiently big in ...
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| Pointer | 8/28/2005 | Aroosh Shahbazian |
Q: I am using MasterCam 8, Windows XP Pro. I have a problem with contours and chaining. I used to get ...
A: Make sure your chain is not broken or you don't have duplicated or overlapped entities, to detect ...
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| Steam Turbine Exhaust System | 8/11/2005 | Al Hall |
Q: what is the function of exhaust system in steam turbine as profissional explaining? Also, How can ...
A: I believe that what you are refering to as an "exhaust system" is simply the condenser. Without a ...
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| Super car | 7/25/2005 | Kalyanasundaram R |
Q: So in other words your talking about air power to power the jump? i was thinking of more of somekind ...
A: Sorry for delay. My idea is that the car itself should be powered by a turbine motor. the exhaust ...
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| Super car | 7/24/2005 | Kalyanasundaram R |
Q: I know that this might be a little far fetched and stuff but all i want to know if it's possible. I ...
A: This is definitely an interesting imagination. I think that your idea is feasible. Construct your ...
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| Selecting Electrical Motors | 7/12/2005 | Pat March |
Q: Good day Mr. March I'm qualified as a digital electronic engineer (Firmware & digital design). ...
A: Howdy Jaques, You ask about how to select motors for particular tasks and adapt them via gears, ...
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