Five uses of ordinary polystyrene?
Yoghurt pots, fridge interiors, eye-shadow compacts, toys, disposable drinking glasses, tape cassette and CD cases, envelope windows. Yoghurt pots, fridge interiors, eye-shadow compacts, toys, disposable drinking glasses, tape cassette and CD cases, envelope windows.
How much does a Propeller planes weigh?
propeller planes weight depends on how, tall it is, how wide it is, and how much cargo it has.
How does welding damage eye sight?
An electric welding arc produces ultraviolet light and the UV light will damage the retina.
With a good welding helmet, your eyes will be protected, but you must have the proper shade (somewhere between 9 and 14 depending on your amperage) and if using an auto-darkening helmet, it must switch on quickly. (1/25000 of a second)
How do you interpret the system of tolerancing?
In order to interpret the system of tolerancing, one must understand that this system is used when designing items that have several parts, and it's these parts that will need a bit of tolerance when assembled in order to work together correctly. If tolerances are too little or too much, the pieces on't fit together correctly, or will not function correctly once the entire item has been assembled.
In stean turbines can the steam exhausted out of the turbine can be used in other turbine?
No. The steam exhausted has neither the pressure(Force) nor the temperature. The steam at inlet is at high pressure say 20-65-?? bar having a temperature of 265-530C. This pressure forces the turbine wheels to rotate and in the process loses pressure and expands. The different stages of turbine wheels are rotated by the steam having less and less pressure and finally after losing its strength(Pressure) it is let out at 0.1 bar. At this stage the roaring lion has been subdued to a country mouse. The Temperature is also around 45C- almost hot water.
Hence this exhaust is condensed back into water and is snt back to boiler to regains strength(Pressure).
Yes this exhaust can be used if such a low temperature can heat up the rooms.
What is inclusion rating and its method?
Inclusion rating is a measurement of Impurity in any steel / alloy elements..
one of the STD for method of evaluation is ASTM E45..
MSQ Inclusion Rating is designed to produce ASTM E45 Method A and Method D inclusion ratings for inclusion types A, B, C and D. The details of the standard are found in the ASTM Annual Book of Standards, Volume 03.01
Technically, conveyors are anything that moves materials. More commonly they are rubber/fabric belts that rotate around rollers and carry items. There is usually one at every grocery checkout.
What is the most important material in pressure cooker?
Stainless steel; because it is non-reactive, durable, and can be used on any and all heat sources.
How do you remove the crown out of a Breitling wrist watch?
i have tried many of times but the best thing i found was to take it to a jewellers. They took mine out for free.
Example career objective for graduate mechanical engineer?
· To work in an extremely challenging environment where I can fully utilize my theoretical skills, efficiency and responsibility, facilitating growth of the organization and to grow with it.
Is journal bearing the same as sleeve bearing?
yes, just different names
No.
A sleeve bearing relies on contact to support the load. These bearings can carry large loads for their size and cost. But, they are very limited with regard to speed. They are also the best bearing for joints that do not turn a full 360° or continuous rotation. Example: Door Hinge
A journal bearing relies on a film of oil to keep the two parts from making contact. They work on a dynamics basis; that is the rotation of the journal (shaft) pulls the oil through the high pressure zone via the viscosity of the oil. Unlike sleeve bearings, journal bearings like speed. They do not do well if they are moving too slowly. They are the most durable bearing known. Example: Engine crank shaft, piston connecting rod to crank.
Joey Lloyd, PE
What is the meaning of T16 steel?
I believe T16 refers to the quality of the steel (recipe) used to make it. The higher the number the better type/quality of steel.
I have heard T16 is used today (2009) and T3 was used to make the Bay Bridge in California in the 1930's.
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Actually T16 is the metric size reference of the bar. A T16 bar is the basic equivalent of a #5 bar, there is no such bar as a T3.
Why do you need a keyway in the construction of a wall?
typically, a keyway is found in a wall made of concrete where there is two separate pours which abut themselves, otherwise referred to as a cold joint. it makes sense to insert a concave keyway continously along the length and in the center of a section of the first wall section poured to receive an abutting concrete pour at a later date. this inserted keyway creates an interlocking style effect between the two abutting pours which creates a higher quality connection than simply butting the two pours with nothing to interconnect them.
typically, a keyway is found in a wall made of concrete where there is two separate pours which abut themselves, otherwise referred to as a cold joint. it makes sense to insert a concave keyway continously along the length and in the center of a section of the first wall section poured to receive an abutting concrete pour at a later date. this inserted keyway creates an interlocking style effect between the two abutting pours which creates a higher quality connection than simply butting the two pours with nothing to interconnect them.
first you must ues the right drilling bit.second you must own the machine or be hired to remove out the lock.
Can structural steel under IS 2062 grade A be used for structures at -40degree?
It depends on the purpose. But generally NO as it will have very low impact strength
How does grinding wheel axis move back in MKL grinding machine when there is a power failure?
You must wait to be connected to power before the wheel and turn it back to back.
Difference between seamless and erw pipe?
ERW (Electric Resistance Welding) pipe is manufactured by rolling metal and then welding it longitudinally across its length. Seamless pipe is manufactured by extruding the metal to the desired length; hence ERW pipe has a welded joint in its cross-section, while seamless pipe does not have any joint in its cross-section through-out its length.
Can you put carbon steel pipe for feed water inlet line of a high pressure boiler?
Yes . So far most of the plants use only carbon steel
Nomenclature refers to system of?
Nomenclature refers to a system of naming and classifying plants or animals.
or..naming things :D