automative lif rasise a 3500lb car 7ft above floor level if the hydraulic cylinder contain 8in diameter piston?

An automotive LIFOtraisese a 3500lb car 7ft above floor level if the hydraulic cylinder contain 8in diameter piston and a 4in diameter rod,determine the
A. work necessary to lift the car
B. required pressure
C. power if the lift raises the car 10 s
D. Descending speed of the lift for a 10-gpm flow rate
E. flow rate for the auto too descend in 10 s

Chosen Answer:

All these answers based on 8 inch lifting cylinder. You haven’t specified anything about the 4 inch rod so haven’t used that in these answers

a). work = force x distance
work = 3500 lb x 7 ft = 24,500 ft-lbs of work
————————————————-
b) 8 inch diameter piston = area of pi * r^2 = 50.26 sq inches
3500 lb / 50.26 in^2 = 69.6 psi pressure
——————————————–
c) power = work / time = 24,500 ft-lbs / 10s = 2450 ft-lb/ second
(one foot-lb /second = 0.738 watt so –> 2450 * .738 = 1,808 watts of power in SI system)
—————————————————————-
d) volume of a cylinder = pi * radius squared * height
one gallon = 231 cubic inches
10 gallons = 2,310 cubic inches
V =2,310 cubic inches = 3.14 * 4in ^2 * height
height = 2310 / (pi * 16) = 45.96 inches

So 10 gallons a minute will lift car or descend car 45.96 inches or 3.8 feet a minute
————————————————————————————————–

e) Flow rate to descend in 10 seconds instead of a minute is 6 times faster (60 sec a minute / 10 sec) = 6.
6 * 10gpm = 60 gpm
.
by: biire2u
on: 14th April 10

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What You Should Know About Computer Engineering Jobs in Computer

With today’s turbulent economy, not all careers are stable and a high percentage of employees employed by big name corporations are being laid off.  With the unemployment rate on a rise, more and more individuals are shifting their focus from full-time employment to full-time schooling.  Computer engineering jobs are very desirable and are one of the most stable jobs to this date because of the nation’s heavy reliance on computers and software programs.  Understand the nature of the position and the education and training you must complete and enter a career that is certain during uncertain times.  

If you are considering entering the computer engineering workforce, you should have a passion for computers and information technology.  Computer engineers are responsible for developing and maintaining computer software programs that consist of coded instructions spoken in computer language.  While some computer engineering jobs are in government offices and schools, others are found in the manufacturing and engineering industry.  Computer engineers should not only enjoy working with computers, they should also be skilled in mathematics, analysis, and science.

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To become a computer software engineer, you must attend school.  Most employers today will require that applicants have a college education and a degree in computer science and/or software engineering.  While a graduate degree is generally preferred, not all employers require this.  Obtaining a graduate degree will make you more desirable to employers throughout the application process.

 

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How to Select Electrical Wire Insulation in Electronics

Electricity is a boon that has not just helped in lightening up homes but also has doubled growth rate of several industries and thus giving a boost to overall economy of a nation. Many countries are struggling to find the best possible solutions to get maximum electrical supply to feed diverse industrial sectors. Nuclear power plants, Hydro power plants and Thermal power stations are being installed in many countries to generate electricity. But electricity has to be treated judiciously and carefully to avoid disasters. The instruments and appliances that are good conductors of electricity must be insulated appropriately.

Electrical Wires are shaped into thin metals that are insulated with thick covers such as plastic, so that these wires can be handled with hands with almost zero chance of electrical shocks. Electrical wires carry current from electrical switches to several appliances in the house. Insulation is not just to prevent us from getting electrical shocks but also to protect wires from heat and moisture.

There are certain symbols by which we can easily make out that what material and coating is used for making electrical wire. One such symbol is THWN. THWN stands for Thermoplastic High Heat-resistant Nylon-coated. This abbreviation symbolizes material of insulation, temperature withstanding ability and conditions of using electrical wire. There are many more important things to be taken into account before selecting Electrical Wire insulation. Some of them are discussed below:

 

  • Material used: There are different types of metals used inside wires such as copper, aluminum or other metals to carry out easy flow of current. Metal should be good enough to withstand high voltage current.

 

  • Color Code: Electrical Wires are also identified according to their color codes. Black signifies neutral wire and green color is for underground wires. So before buying any electrical wire look out the right color.

 

  • Application: Electrical wires and cables should be used as per the application area. This would prevent electrical shocks and short circuits. Also, another significant point to consider is the thickness of the wire. Its thickness should be according to the current supply in that particular panel. Whereas plastic insulation material is good for dry area conditions, paper insulation material is best for underground wires.

With passage of time, the number of Electrical Wire Manufacturers and Suppliers is increasing tremendously but one should be very careful while purchasing Electrical Wire. People must approach authentic Manufacturers and Suppliers of Electrical Wires, so that they get the best deal.

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DROK 0.56″ Green LED Sign Electronic Digital Clock Display 4 Digits Car Vehicles 12V/24V Battery Operated

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Nevada Jobs Decline in Percent

More Nevada jobs were lost last month.

During May, the State of Nevada saw its unemployment rate increase from 10.6 percent to 11.3 percent. The state had a total non-farm employment of 1,199,300 workers during May, according to the United States Department of Labor Bureau of Labor Statistics. This is down from 1,201,600 workers during April and a 6.1 percent decrease from last year.

Once again, as with many other states and industries, Nevada’s construction industry took the biggest hit when compared to last year. That industry employed 95,100 workers during May, down from 97,100 workers during April and a 20.3 percent decrease from last year.

Other industries that saw an over-the-year decrease in jobs during May include:
-manufacturing by 7.8 percent
-trade, transportation and utilities by 3.4 percent
-information by 8.8 percent
-financial activities by 4.2 percent
-professional and business services by 8.7 percent
-leisure and hospitality by 6.2 percent
-other services by 1.6 percent
-government by 2.6 percent

Only two industries saw an increase in jobs when compared to last year. The mining and logging industry employed 12,400 workers during May, down from 12,500 workers during April, but a 2.5 percent increase from last year. The education and health services industry employed 96,800 workers during May, down from 97,300 workers during April, but a 1.4 percent increase from last year.

The nation as a whole saw its unemployment rate increase from 8.9 percent to 9.4 percent during May. Non-farm payroll employment declined by 345,000 jobs, about half the average monthly decline for the last six months.

The country experienced strong losses in the manufacturing industry, while losses in the construction industry and other service-providing industries began to level off.

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Dorman 525-100 Air Bag Clock Spring

  • Clock springs naturally have high failure rate from the repetitive rotating of the steering wheel
  • Air bag warning light pinpoints failing clock spring issues
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  • A quality part backed by a Dorman limited lifetime warranty

Dorman Products, Inc. is well-known as a leader in providing quality auto parts to the aftermarket. We’ve earned our reputation for excellence from over three decades of experience in providing automotive replacement parts, fasteners and service line products primarily for the automotive aftermarket. Our prestigious position stems from a unique combination of application expertise, innovative product design, and breadth of product offerings, many of which are not conveniently or economically available elsewhere. At Dorman, we take pride in the quality of our products and in your satisfaction.

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Used Car for Sale – A Guide in Car

If you buy a car from used car sale through a dealer then you can get many benefits. Many dealers offer services free or at subsidized rate for a certain time period. There are many people who do not use their car too much and their cars are in good condition. If you can find such a car in good condition then you can save a significant amount of money. It is always better if you find out someone through reference. People who sell used car through references price their cars lower than the dealers. You also save on the amount that you have to pay to the dealer or the agency.

People who sell used cars usually contact the dealers for selling cars and that is why you can go to used car sale for buying a used car. There are many ways to search for a good used car. Local dealers are the best source but they have limited number of deals. Websites, dealing in cars that are used, cover vast area and allow you to get access to more number of deals. You can check deals from private dealers in the local newspapers. Many private owners prefer to sell their cars on their own; however it is difficult to assess the used cars values when you are dealing with individuals. You have to rely on them about the information related to the car, history of car and the condition of the car.

The market for these cars is very big and there is no need to compromise on your budget or the kind of carr you are looking for.

The market is big and you have large number of cars to choose from but make sure you know the used car value before you pay for it. If you are not an expert then you must get expert advice before making the final purchase.

It is good to find information on internet and do some research. This will help you in ter\ms of getting adequate information about a particular type of car like why you should or should not buy it, has the car been successful in the market, what are the drawbacks, and how is it better than other cars in the same category and other similar information.

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Dorman 525-700 Air Bag Clock Spring

  • Clock springs naturally have high failure rate from the repetitive rotating of the steering wheel
  • Air bag warning light pinpoints failing clock spring issues
  • Can be replaced using common hand tools and a steering wheel puller
  • A quality part backed by a Dorman limited lifetime warranty

Dorman Products, Inc. is well-known as a leader in providing quality auto parts to the aftermarket. We’ve earned our reputation for excellence from over three decades of experience in providing automotive replacement parts, fasteners and service line products primarily for the automotive aftermarket. Our prestigious position stems from a unique combination of application expertise, innovative product design, and breadth of product offerings, many of which are not conveniently or economically available elsewhere. At Dorman, we take pride in the quality of our products and in your satisfaction.

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auto techs?

Auto techs?
If you’re an automotive tech, please give me some feedback please, for example, could you answer the following question:

Do you have a degree or a certificate?
How much did you start off at?
Are you paid flat rate or hourly wage?
How long did it take you to start making a lot of money?
How many days do you generally work? If 6, then is it mandatory?
What’s the highest hourly or flate rate that you’ve ever had?
If your work is based on flat rate, what is the most hours that you have ever made in one week?

Chosen Answer:

I started clean shop and oil changes, Graduated to tune up then diagnostic lane VW shop that was 1972/1973. Back then no associate degree was necessary. $ 1.75 an hour soon to get to .50 an hour. Gasoline back then cost 35 cents a gallon. Almost all Automotive techs are paid flat rate hour. The most money I ever made is 65, 70 thousand a year. I mostly average 55/60 thousand. I own a nery nice house. I am earning dollars per flat rate hour and earned last pay period 116.7 hours that’s 2,800 for 15 days. After taxes 15% 401 retirement,uniforms laundry and medical insurance FICA federal withholding I got out there with almost ,900. You get to work in non air conditioned shops freeze in the winter. Working with 7,300 lbs above your head and running machines are just dangerous. Work for a dealership you are more likely to have the special tools to do the job correctly. I own the largest Snap-On tool box completely full of tools laptop oscilloscope obd2 blue tooth diagnostic interface That investment was made over 34 years and some think the 0,000 dollars invested excessive but when you have the tools I have I can continue to work with out stopping. When other mechanics come over to borrow something I have. I tell them three times then you have to buy one. We stagger our work week so 5 day work week. every other month Tuesday Thur Saturday, I am on Monday-Friday in June. The one thing that should change is manufactures set the warranty times for repair and they are reluctant to change the times upward when there is a mistake. Because to control warranty expence saves the manufacture money. Some Manufactures are better than others. Warranty repair times are substancially less than customer pay. CP labor averages 60% more. Leasing cars gas prices really hurts my bottom line. People just don’t maintain cars for 10 years anymore. Oh by the way I live and work in Fort Worth TX
by: John Paul
on: 4th December 09