It's the depth of the cut from the crest of the surface down to the base on a bolt or screw.
Why is condensate polishing unit operated at high pressure in a high pressure thermal power plant?
Perhaps the designers did not think of the advantages of a low pressure CPU. The only add on is the booster pump required downstream of the CPU.
Advantages of LP CPU are aplenty, starting from feasibility of gel resins, affordable pre filtration and improved OBR.
Take a peep into the European and Japanese markerts.
What is the shear stress in ss 316 mat?
Shear stress in SS 316 (a type of stainless steel) can vary based on the specific conditions of its application, such as the load applied and the geometry of the component. Typically, the shear strength of SS 316 is about 0.6 to 0.7 times its tensile strength, which is generally around 570 MPa (82,700 psi) for the material. Therefore, the shear stress can be calculated by applying the formula τ = F/A, where τ is the shear stress, F is the applied force, and A is the area over which the force is distributed. It's essential to consider factors like temperature and corrosion, as they can also affect the material's shear properties.
How to calculate Q first moment of inertia above and below the neutral axis?
-find the area(A) of the shape above the neutral axis (or above a particular point if given)
- locate the centroid (y')of the shape relative to the neutral axis(or above point) using
y' = ∑AiYi / ∑Ai
- first moment of area = A*y' (or y' + distance of given point from neutral axis)
What happens to strain when stress is increased in a material?
It also increases. It increases linearly with stress in the elastic range, then increass more rapidly once the material is plastic ( yielded).
The displacement is proportional to the strain. This does not factor for creep and time.
Governor is a device used for maintaining a constant speed of rotation of the crank shaft over long periods during which the load on the engine may vary.
Limit gauges can be designed to check a single distance, length or diameter, or may serve the inspection of multiple dimensions. This later may comprise contours, a combination of contours and length dimensions, geometric forms individually or combined with length, such as tapers and cylinders, or the interrelation of several forms, sizes and their location on a single body or within a assembly.
Can an angle stop control water flow pressure?
An angle stop is not intended to control water pressure for most applications. That being said, however, you can control the pressure with an angle stop valve (Aka angle pattern globe valve) while there is flow. As soon as the flow stops, then the pressure will equalise throughout the system.
I would suggest using a PRV or pressure reducing valve. This will control water pressure under most all conditions.
Source:
2nd year plumber training, Alberta
What is the difference between psia and psig readings?
No.
Psig (pound-force per square inch gauge) is a unit of pressure relative to atmospheric pressure at sea level. By contrast, psia measures pressure relative to a vacuum (such as that in space). Most pressure gauges, such as tire gauges, are calibrated to read zero at sea level, because most applications require the difference of pressure.
At sea level, Earth's atmosphere actually exerts a pressure of 14.695948804 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.695948804 psi. Thus a reading of 30 psig on a tire gauge, represents an absolute pressure of 44.695948804 psi.
^^^ The last sentence assumes a greater level of precision than could be obtained from most standard tire gauges. If we assume that 1 psi can be distinguished on the gauge, then the absolute pressure would have to be expressed as 45 psi.
Why is it that ac arc welding is more common than DC arc welding?
I am not sure that it is more common. The large welding rigs that are mounted on trucks mostly use DC, but they can be set for AC. If the question is based on a survey of the cheap welders at a retail outlet, the answer would be that AC welders are simpler to make, since only a transformer is required to change the voltage. A DC welder needs to convert the power from AC to DC, which is more complicated and therefore more expensive. Cheap welders may be easier to sell to a beginner, therefore more of the welders would be AC.
1 [usu. in sing. ] a sudden violent twist or pull : with a wrench Tony wriggled free.
• figurative an act of leaving someone or something that causes sadness or distress : it will be a real wrench to leave after eight years.2 a tool used for gripping and turning nuts, bolts, pipes, etc.3 Mechanics a combination of a couple with a force along its axis.
Backup wrench tools example is Lokrite Safety Backup Systems Try www.sholintools.com or google Sholin tools for pictures and videos
What is degree of reaction in turbine?
Degree of reaction can be defined as the ratio of pressure energy change in the blades to total energy change of the fluid..
For eg If we have 50% KE and 50% PE then the degree of reaction is 0.5
the bell crank lever is a apparatus used to verify the law of moments.
Bleed air in gas turbine engines is compressed air taken from within the engine, after the compressor stage(s) and before the fuel is injected in the burner
Why are levers often included in the design of objects for people who can't use their hands easily?
Levers allow you to manipulate heavy things with less force, at the cost of more distance traveled.
well, the formula for working out volume of a cylinder is PiR^2
which means pie times the radius squared, that gets you one face then you times that by the length so the forumal is R
pR2xL where R is the radius and L is the length.
Or
Volume= Bh
B= the area of the bases
h= the height
What is the difference between Cooling Energy and Cooling Load?
Cooling energy depends on the efficiency of cooling device used but cooling load depends on many factors such as the volume of the room, comfort band, fabrics used, geographical and climatic properties of location that the room is built.
In simple terms, for a room with a specific cooling load different devices can be used. Since, each device has different efficiency, therefore different amounts of cooling energy may be obtained.
What is the difference between simple support and pin-joint support?
We tend to use them to mean the same thing.
In two dimensions, a simple support is one that allows rotation. A pin joint support is a simple support that allows rotation but not translation. A roller joint support is a simple support that allows rotation and translation.