Mechanical Engineering

To keep the steam free from impurity which may be dissolved solid,suspended solid or moisture

There are many strength associated with adhesive - tensile, compresive, cleavage and peal. Adhesive failure is also determined by some of these factors. When two parts are bonded, they are then tested in a number of ways in order to gather technical information. During the tests a number of results are looked at, such as Cohesion Failur - which is failure of the adhesive, Adhesion failure - which is when the adhesive breaks away from the substartes or parts glued, and finally there is substrate failure - when the material that is being bonded fails....

Hope this helps

Benson Boiler , Sulzer boiler are the main subtypes of once-through boiler

A circle is the form where all points have the same distance from the center.

Imagine some other form for the tyre - for example, a hexagon. To move a car (or waggon) with such tyres, the center of mass of the car would have to go up and down all the time, since in a hexagon, NOT all points are at the same distance from the center. Raising the center of mass would require a certain amount of energy; when the car falls back down (to the next side of the hexagonal wheel), part of this energy would be lost.

A circle is the form where all points have the same distance from the center.

Imagine some other form for the tyre - for example, a hexagon. To move a car (or waggon) with such tyres, the center of mass of the car would have to go up and down all the time, since in a hexagon, NOT all points are at the same distance from the center. Raising the center of mass would require a certain amount of energy; when the car falls back down (to the next side of the hexagonal wheel), part of this energy would be lost.

A circle is the form where all points have the same distance from the center.

Imagine some other form for the tyre - for example, a hexagon. To move a car (or waggon) with such tyres, the center of mass of the car would have to go up and down all the time, since in a hexagon, NOT all points are at the same distance from the center. Raising the center of mass would require a certain amount of energy; when the car falls back down (to the next side of the hexagonal wheel), part of this energy would be lost.

A circle is the form where all points have the same distance from the center.

Imagine some other form for the tyre - for example, a hexagon. To move a car (or waggon) with such tyres, the center of mass of the car would have to go up and down all the time, since in a hexagon, NOT all points are at the same distance from the center. Raising the center of mass would require a certain amount of energy; when the car falls back down (to the next side of the hexagonal wheel), part of this energy would be lost.

to calulate the tensile strength of a copper wire is that get mass/weights, a clamp stand, a g clamp, a copper wire and a boss head. Tie a loop from a wire and hang it on the edge of the clamp stand, put the g clamp on the clamp stando it dosent fall of, anyway after you tie a loop at each ends of the copper wire hook the edge of the weights at the bottom of the loop keep putting on weights until it snaps and make sure you have googles on.

Hi Sir My name is Alan Huang , a salesman with C.P. Machine Tools and we are handling Birmingham lathe in U.S.A. Our company in the U.S.A. market for 20years already. Please visit our web-site www.cptools.com and contact us info@cptools.com Thank you! Alan

Fluids derived from some plants have bactericidal properties. Some of the best known ones are lemon juice and onion juice.

length times width equals the area of a rectangle. length times width equals the area of a rectangle. area

Although raw materials are very limited in Switzerland, the country has a world-class manufacturing economy fabricating raw material imports into high-value added exports. The engineering industry, together with metals and electronics, employs about 9 percent of the country's workforce and contributes around 40 percent to Swiss export revenues. Leading areas in the sector include precision engineering, in particular the world-renowned Swiss clocks and watches (accounting for 8 percent of export revenues in the early 1990s); scientific instruments; heavy engineering and machine building, including specialized, custom-built equipment such as generators and turbines; food products, particularly specialized luxury goods such as chocolate and cheese; textiles; chemicals; quality pharmaceuticals; and fine handicrafts.

what are the advantages and disadvantages of refrigeration

proney brake dynamometer is a device use to measure engine power

Sometimes a staple can get jammed in the stapler. It also can get stuck while refilling the stapler.

A Cat III check involves taking the final detail design drawings and functional specification, and developing our own load cases, calculations and analyses. By utilising a totally independent party to carry out a check allows the client to be confident that the design is suitable for its intended purpose, and also viable for manufacture. Based on this check, we also advise of any modifications that may need to be made to the design.

DIN X 90 CrMoV 18 NF - AISI 440B SIS2319 BS - EN X90CrMoV18 Chemically Specifications C S Cr Mo Vanadium Fe WS 1.4112 0.85-0.95 0.03 Max 17.0-19.0 0.90-1.30 0.07-0.12 Rem x 90 CrMoV 18 0.85-0.95 0.03 Max 17.0-19.0 0.90-1.30 0.07-0.12 Rem AISI 440B~ 0.85-0.95 0.03 Max 17.0-19.0 0.90-1.30 0.07-0.12 Rem

The correct name of the electrode is E8018. E stands for electrode, the 80 stands for 80000 psi minimum as welded tensile strength, the 1 stands for all position, and the 8 is the number associated with the ingredients of the flux, which in this case is low hydrogen and increased amounts of iron powder.

The following is taking from the 'Outline Answers' of Part (A) of the 2009 Noise and Vibration Control Engineering paper from an examination as part of the Diploma in Acoustics and Noise Control which is accredited by the Institute of Acoustics.

"Inertia blocks are massive supports used for isolating foundations beneath vibration-sources and/or vibration-sensitive machines. Inertia blocks increase the isolated mass and therefore decrease the natural frequency of the vibrating system; particularly useful for dealing with very low frequency vibration problems, e.g. isolating a recording studio from an underground railway."

It is generally considered that the equipment should be rigidly mounted to the inertia block, a view also taken by Bies and Hansen (2009). The inertia block should also be made of rigid material such as concrete.

A material will be graded as brittle when it breaks with only a small amount of strain. Its brittleness is based on the amount of deformation used to break the material.

no. the size of a pully makes little difference to its action on a rope as the only thing changing is how much of the rope is in contact with the pully and since the pully rotates it makes it no easier or harder to pull the rope.

Friction.

Lathe tool dynamo meter is a equipment which used for observing the amount of load acting on the tool while operation.

2-D Lathe Dynamo-meter measures the horizontal & vertical component of the load acting on the tool.

It works on strain gauges resistance change principle.

There is a Wheatstone Bridge whose one resistance connected to the strain gauge.

In the Display unit it has PU1 & PU2 knobs.

PU1 related to the Vertical load and PU2 related to the Horizontal loads.

Not sure exaclty what you are asking. There are many minor systems that relate to the Landing Gear and the wheels and brakes. The aircraft is divided into different categories referred to as ATA categories. ATA 29 is Hydraulic Controls and ATA 28 is Fuel Controls. Landing Gear is covered by ATA 32. Then this category is sub-divided based upon the manufacturer's organization. ATA 32-10 is the Main Gears ATA 32-20 is the Nose Gears ATA 32-30 is gear retraction and extension ATA 32-40 is wheel and brakes and anti-skid ATA 32-50 is steering ATA 32-60 is Proximity Indicatio System Each of these sub-categories that relate to the braking, and steering and retraction are considered sub-systems of the landing gear.

The bed of a lathe is the central beam that runs down the machine. The head, which holds and turns the workpiece, is fixed at one end, there is a tailstock at the other end which can be adjusted along the bed, and usually a carraige in between, which holds turning tools. The workpiece that can be turned in the lathe is limited to what will fit in the head without hitting the bed. A gap bed lathe has a gap in the bed near the head, so a larger workpiece can be turned.

The diesel combustion pressure depends on various factors. The model and the type of diesel engine is important.

the avro arrow was built by avro Canada. this jet was able to reach speeds up to mach 3.6 witch was put out of service due to America not wanting to be out done by Canada.

The original answer is incorrect (at least in the North American meaning of the term 'Hydraulically smooth'. Hydraulically smooth mean that the roughness on the wall of the pipe is less than 1/2 of the thickness of the viscous sublayer of the turbulent flow. The viscous sublayer is (well) less than 1% of the pipe diameter. The viscous sublayer thickness is calculated as:

t=5D*(8^0.5)/((f^0/5)*Re

where t is the thickness, D is the Diameter, f is the Darcy Friction Factor (found from the Moody Diagram or the Colebrook Equation, and Re is the Reynolds number, based upon pipe diameter and the average flow velocity in the pipe.

Re = u*D/v

u is average velocity

v is kinematic viscosity

As a last comment on the old response, it is in fact describing the critical flow rate for transition to turbulence (i.e. the flow rate for Re ~= 2300). The exact value for transition to turbulence is dicey to determine, and does, as the answer says, depend on the roughness and disturbances. Further, as the equation for Reynolds number shows, the transition to turbulence also depends on diameter. Laminar (not turbulent) flow is often called 'smooth', and the study of fluid motion is hydraulics, so it's easy to get the meaning of 'hydraulically smooth', mixed up with 'smooth (laminar) flow'

*****Old (incorrect) response*****

The flow rate inside a pipe that will produce laminar(No turbulence) flow. The physical smoothness plays a part but need not be as smooth as glass. A concrete, cast iron , copper and glass pipe can all produce laminar flow. The flow rate at which turbulence begins (no longer hydraulically smooth) will depend upon the surface texture where rougher surfaces will cause turbulence to occur at lower flow rates compared to a smoother material. Raise the flow rate enough and your will eventually get turbulence.

So to have hydraulically smooth pipes you would need to spec no only the material but diameter as well to ensure laminar flow up to the max expected flow rate. Also any turbulence inducing fittings would also be included. For example a bar grate in a storm water system could be installed such that hydraulically smooth flow is maintained for low flow rates. (The water ca easily pass around the bars). During the high flows a storm would produce the bar grate would cause a restriction and you would no longer have smooth flow.