Mechanical Engineering

The workpiece is holding on the worktable of the machine. The table movement controls the feed of workpiece against the rotating cutter. The cutter is mounted on a spindle or arbor and revolves at high speed. Except for rotation the cutter has no other motion. As the workpiece advances, the cutter teeth remove the metal from the surface of workpiece and the desired shape is produced.

reference- http://engineering.myindialist.com/2009/principle-and-working-of-milling-machine/

in many mechanics classes, wires have negligible mass and rods have a mass.

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Yes a little bit of carbon can makes a much difference in the properties of steel.

Passive Load is Load comprising of Passive Components

Active Load is the Load comprising of Active Components

In Test Boards its better to use Active Loads, If you are concerned about Temperature Variations during characterisation

A wheelbarrow is an example of a second-class lever. The load is situated between the fulcrum and the force.

The wheel-barrow is a 2nd class lever as the resistance is in between the force (effort) and the axis.

A wheelbarrow is a class 2 lever. The fulcrum is the wheel or wheels in front of the wheelbarrow. You stand behind the wheelbarrow. The load is between you and the fulcrum.

Its 1 you need more than 1 to improve mechanical advantage

i think it's 2

A single pulley means one axel, making the IMA = 1. A double pulley's IMA would = 2, and so on and so forth.

Tension stress tends to pull a material apart and acts normal to its cross section plane.

Shear stress tends to shear a material apart and acts in the plane of its cross section plane.

Crushing stress tends to push a material and acts normal to its cross section plane, in the opposite direction of tension. Crushing stresses are compressive stresses and could also be bearing stresses.

For a material laoded in pure tension, shear exists at 45 degrees along the cross section plane and is 1/2 the tensile value. For pure shear, tension exists 45 degrees along the cross section plane and is equal to the shear value.

Most all metals are stronger in tension than in shear, by a factor of about 1.7.

Some materials, like chalk or concrete, are stronger in shear than in tension. If loaded in shear, they will break intension 45 degrees along the cross section

Elevator Counterweight = Half of Elevator Maximum Capacity + Cab Weight

For eg: 10passenger Elevator = 10*80 = 800Kgs

Counter Weight is 800/2 = 400Kgs + Cab Weight

This is just to create a imbalance between Elevator cab and counterweight in order to save power in the drive.

Kerosene or Avtur.

why oxyacetylene filler rods cannot be used for gas tungusten ar welding

no because stress depends on the force and area of the element

A thermoset is a material that cures or sets into a given shape, generally through the application of heat. A cured, thermoset material will not remelt or otherwise regain the processibility it had before being cured. Curing changes the material forever.

A thermoplastic material softens (becomes pliable and plastic) when heated, but it does not cure or set. It can be reheated to be reformed.

it is the bearing that holds the shafts while it is rotating.

there are like athousand things!!

Think of:

1.- remote control (mainly made out of plastic)

2.- controllers for a video game system

3.- the hose you use to water your plants

4.- the buttons of your washing machine are surely made out of plastic

5.- shampoo bottles

6.- handles of your fridge, most of them are plastic

7.- the grips of cooking pans are mainly plastic

8.- light switches are made of plastic

9.- closures and lids of several bottles

10.- buttons of your cloths

11.- your clothes (polyesther) are made out of PET plastic

12.- the soles of your tennis shoes

13.- the insulating plastic that covers all of the appliances wires and connections

14.- the keyboard of your computer is mainly plastic

15.- the mouse you use to point in your computer is plastic mainly

16.- your telephone is mainly plastic

17.- the case of your tv and other appliances is made out of plastic

18.- a waste basket in the kitchen can also be plastic

19.- the bottled water you drink is bottles in plastic

20.- the bread you eat is probably packed in a plastic bag....

There's remote controls, shampoo bottles, light switches, telephones, the keyboard of a computer, credit cards, TVs, toilet covers, and other things - Mark Washington

Your plastic and well some chairs, paper shredder cars interior and etc.........

Gas turbines are engines. Gas turbines, turboprops and turboshafts all work similarly--the engine turns a fan; the air coming off the engine's fan turns another fan, which is connected to a shaft that does the work you bought the engine to do. In fact, the most popular turboprop engine--Pratt & Whitney's PT-6--is also available set up as a turboshaft or a gas turbine. The gas turbine has a few advantages over the diesel engine. First, it's lightweight. General Electric will sell you a 33,000 horsepower gas turbine that weighs 10,000 pounds; Pielstick will sell you a 7000 horsepower diesel that weighs 70,000 pounds. Second, it's very reliable. And third, it can run on many kinds of fuel. Gas turbines own the natural gas pumping industry because they'll run on natural gas, which is right there--just run a little pipe from the gas main to the fuel control on the engine, and you're in business. The disadvantage of a gas turbine is it won't speed up very quickly. If you have a ship with a gas turbine in it, that's not a big problem--ships accelerate slowly no matter what kind of engine they have, just because they're big and have to push water out of the way. If you're pumping natural gas you don't care about acceleration at all--the engine is always going to run at the same speed. But this slow acceleration is one of the reasons they're not good car engines. (The major reason they're not good in cars is if you don't know how to start a turbine engine you'll destroy it; gasoline engines are much more difficult to harm that way.)

By appointment carbon steel is classified by structural and instrumental. Depending on the quality of structural carbon steel is divided into quality steel and steel of ordinary quality, instrumental - for quality and high performance. Depending on the degree of deoxidation of steel divided into boiling, halftranquil, quiet.

Zip lines

weight training machines

hoists

electric elevators

cranes

The cord that pulls up window blinds is a pulley.

A example of a pulley is a block-and-tackle

a flag pole.

window blinds

The shades

a fishing pole

not one circularity that is section of cylindrical surface with in any one of line with in as per tolerance on axis , and cylindrical not one that is entire surface required of with in tolerance according in the axis that is difference

The mechanical advantage is the ratio of the distance your hand moves to the distance the piston travels. For instance, if the lever is 21" long and a full rotation of the level produces a piston travel of 7" then your hand would move 2*pi*21" (131.9"). The ratio 131.9:7 reduces to 18.8:1. If you wanted to produce 1 ton (2000 lbs) of force on the piston you have to appy 106 lbs on the 21" lever.

hydralics are used in car brakes,space ships,air planes,heavy equipment,lifts.

You can't. They are nearly opposites. The pump uses energy to change fluid flow and the turbine uses fluid flow to produce energy.

Actually, you can convert a pump into a turbine. You need all the specifications, though. The most important being the head. There are a number of manuals one can check out

June 11 1832
born 1838 in Duluth minnesoat

6 gauge steel is 0.2031 inches thick (USG).