Mechanical Engineering

generally, it was used to shear mild steel, stainless steel,metal plate.

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For most steels . . .

Shear Strength = 0.577 * UTS

You can also say S.S = 0.577 * Yield and that would be the strength against yeilding.

It would depend on the environment in which the equipment is being used

Turbine rated speed varies mainaly on the factors of Generating frequency and means of coupling to generator (viz trough a gear box or directly coupled and no.poles in generator). For exmple a 50hz generting frequency and a bi-pole genarator the turbine speed is 3000RPM. The allowed speed rise also depends on turbine design and generator operational range. Generaly the speed rise is restricted to Maximum of 10% of the rated speed.

P1 Material is the name given to Carbon Manganese Steel in the engineering industry

Low carbon steels suffer from yield-point runout where the material has two yield points. The first yield point (or upper yield point) is higher than the second and the yield drops dramatically after the upper yield point. If a low carbon steel is only stressed to some point between the upper and lower yield point then the surface may develop Lüder bands.

You have to increase the suction head, or decrease the speed of the pump. As you may know, cavitation happens when the static pressure at the pump inlet minus the equivalent pressure of the fluid velocity in the pump drops low enough to vaporize fluid. To prevent it, the static pressure needs to be higher or the velocity needs to be lower.

A fire wall is what protects and controls the incoming and outgoing network traffic. A fire barrier blocks more of the things that can come in and go out of the network.

thats means load

In some countries (Greece for sure) by "moment of resistance" we mean Section Modulus, which is Z=I/y, where I: moment of inertia, y: distance from the neutral axis to the most extreme fibre

what is the flexural modulus value od mild steel

ASTM A105N is different from A105. The A105 is classed "as forged" as opposed to A105N where the 'N' stands for normalized i.e. it has been heat treated to remove the internal stresses caused by casting, forming etc. If a customer specifically asks for A105N then it will be for a good reason. The normalizing heat treatment will ensure the A105N has superior properties to that of the A105. The 'N' is not a category code, the A105 should be normalized if intended for use below -1 C. There are API regulations that go further into it that you should read up on, primarily API RP14E. Hope this helps

The bell is considered a percussion instrument. The part of a bell that clangs the sides to make the noise is called the clapper.

Divide heat added to the boiler between feedwater inlet and steam outlet by the kilowatt output of the generator at the generator terminals. Rate expressed in btu. See article.

I believe drill-rod is harder than ordinary, cold-rolled steel - I cant give the specs to back that up definitively, but in my 14 yrs of industrial maintenance experience, I believe that to be correct.

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I agree if I am right in thinking that "drill-rod" is the material called "silver-steel" in the UK. This is an alloy capable of being hardened and tempered to make cutting-tools, spindles etc, but is pretty tough to machine even in its annealed state. Cold-rolled mild-steel in turn, is tougher than hot-rolled m.s. but I don't know if it is any stronger. That would depend on the specific alloy rather than process.

Caulking :TO make metal to metal contact

Fullering :To have rivet to part contact.

The first conveyor belt was invented by a man named Richard Sutcliffe in 1905. They used them in coal mines which caused a big transformation in the mining industry.

CPST

During shaping operation, the cutting tool exerts a force on the workpiece. This force can be resolved in two components(horizontal,vertical). Horizontal force is the cutting force. Vertical force causes the workpiece material to deform elastically. We know, an elastically deformed body regains its original shape after the force is removed. So, after the tool move past one elastically deformed section of the workpiece, the section is raised up as the force is removed from the section. This effect is called "Strain back effect".

WP is prefix, which is given to all manufactured fittings which has been manufactured as per ASME B16.9 and also the dimensions of fittings match as per the code

Reference ASMEB 16.5 Para 4.4.1

Regarding B I am not sure need to explore still a bit

if anybody has an answer please mail me at melwin_farias@yahoo.co.in

Tension and compression takes place when an object has a force on another object. The tension is when the force is causing a pulling effect on part of the object. The compression is when the force is causing a contracting effect on part of the object.

Yes, but it will take years for the base metal to get hot enough for any fusion welding.

The Rockwell C Hardness system uses "HRC" as a measure of hardness for various materials. A hardness of 68 HRC is extremely high and will most likely be harder than simple steel.

The width of the jaws (not the opening)

The guaranteed heat rate, indicated on performance data table of power plant is calculated in accordance with

the following formula:

HR = (Qms x Hms - Qfw x Hfw + Qhrh x Hhrh - Qcrh x Hcrh - Qas x Has + Qmu x Hmu) x 3600 / W

HR = heat rate [kJ/kWh]

W = gross power output [kW]

Q = mass flow [kg/s]

H = enthalpy [kJ/kg]

Subscript:

ms = main steam

fw = boiler feedwater

hrh = hot reheat steam

crh = cold reheat steam

as = auxiliary steam extraction from turbine cycle for boiler users

mu = make up water at condenser