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Mechanical Engineering
Mechanical Engineering is a branch of engineering that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines and tools. Mechanical engineering involves application of the principles of dynamics, control, thermodynamics and heat transfer, fluid mechanics, strength of materials, materials science, electronics, and mathematics.
10,989 Questions
What is meant by marine corrosion?
Corrosion means the breakdown of essential properties in a material due to chemical reactions with its surroundings. Marine corrosion is of particular interest to designers of ships and shoreline facilities because most metals used in these structures are vulnerable to damage from water, and sea water in particular. As an example, metals such as the reinforcing steel used in concrete structures will react in the presence of sea water forming rust that will expand and destroy the overlying concrete, leading to a premature failure of the structure. Different metals corrode more or less agressively in the presence of sea water, and materials scientists track this vulnerability in the "galvanic series", which is a chart that lists each material according to the severity at which it corrodes within a given environment. Note that bonding two metals together in a corrosive environment causes an electrochemical reaction between the two, which causes accelerated corrosion of the metal further down on the galvanic chart. (The metal further down the chart is known as the anode as is preferentially corroded. The other metal is refered to as the cathode.) To slow or limit corrosion of a particular piece of valuable metal (like a ship's hull or your hot water tank), engineers can attach a "sacrificial anode", which will corrode while protecting the structure in question. Another method of reducing corrosion in metal facilities (such as pipelines) is to provide a low level of electrical current to the facility in a system know as "cathodic protection" which protects the facility by accellerating corrosion to anodes driven into the ground at regular intervals. Rod Burrows, PE
Do you need a darker or lighter welding helmet for arc welding?
A darker helmet shade, compared to gas welding. A shade of 10 for 70 amps, it works up from there, or you could buy a auto-darkening hood which you can see out of, but when you strick the rod on the metal it darkens to the right shade for you to still see out of.
The difference between iron and steel why is steel better than iron for most uses?
Steel is an alloy if iron, consisting mainly of iron. Steel is both stronger and lighter than iron so is more efficient to use in buildings and other structures.
A Thompson Coupling is a High RPM, High angle, constant velocity joint between to turning shafts. The TC is used in a wide range of applications from the automotive industry, trains and on the rotor shaft of helicopters.
What does a pump develop flow or pressure?
the pump develops pressure to have the ability to make a flow of a gas or fluid
take place through a vessel, pipework or valve system, as long as there is an
open end to the pipe system or vessel allowing distribution of fluid to an outlet or a return pipe back to the pump body.
Is a limit switch an input or output device?
An input device. It is because it let the source to flow.
A rotary union / rotary joint is a mechanism used to transfer liquids and/or gases while rotating or swiveling from one connection to another. Rotary unions are engineered to endure a large range of temperature and pressure for a variety of conditions and environments. In addition, rotary unions may integrate multiple ports and handle different types of media concurrently.
Rotary unions function by connecting to an input and securing onto another mechanism while allowing a moving connection to be preserved. They are utilized in a variety of applications; from miniature rotary unions for the semiconductor industry to large, heavy-duty rotary unions for industrial applications. Additionally, numerous materials, seals, and bearing types can be incorporated.
Reference - .dsti.com/products/rotary-union
How do you Convert Torque Nm to Force N?
Torque T=Nmsin x, thus Force N=T/msin x.
If sin x is zero Torque is zero and Force is zero.
It might be difficult to determine the "strongest" metal when considering the different characteristics attributed to metals. That said, it is probably tungsten that is the strongest of the metals (in pure form). It has the highest tensile strength of all pure metals. Alternately, titanium could be considered the strongest, as it has the highest strength-to-weight ratio of any metallic element.
However, it is not possible to answer this question definitively, as there are three measures of strength: tensile strength (the ability to withstand being pulled apart without deforming), compressive strength (the ability to withstand being compressed without deforming), and shear strength (the ability to resist forces perpendicular to the items main axis, rather than along it, as with tensile or compressive forces). All metals have different characteristics, and the strongest in each category is not the same.
In addition, when one says "metal," do you mean a metallic element, or any of the various metal alloys? There are only a very limited number of metallic elements, but there are an enormous number of metal alloys.
A Monobloc pump is a pump in which all rotating parts are mounted on a common shaft. The main components of a Monobloc pumps are Pump assembly and Motor assembly.
Since there are 7% losses in belt driven sets and 3% losses in coupling driven sets hence to avoid these transmission losses Monobloc pump sets evolved. In monobloc pump sets as motor and pump are mounted on a single shaft there is no energy loss during energy transmission from motor to shaft.
By - Tanveer Ahmed Bankapur
What is marble gang saw cutting machine?
the marble gang saw cutting machine is a machine to make a slat of required thick from a big sized of marble from mines
How do you compare tool steel grades?
Tool steels are compared to each other. They are usually measured by toughness, hardness and wear resistance. The toughness is detemined by an Charpy impact test. The hardness is measured by a Rockwell hardness tester and reported as HRC or RC. The wear resistance is measured by a number of tests that measured the amount of material removed from the original size after a repetitive movement against an abrasive material.
These figures are then gathered and presented on a chart. The grades are then compared with one another based on these three properties.
See the links below for more information on comparing tool steels.
What is the function of turbo charger in d g?
exhaust gas is convert into the suitable air to transfer in inlet.
single slider crank is a simple actuator which consists of four links and which converts rotary motion into reciprocating and vice versa.
dual phase steel is a high strength steel that has a ferrite and martensitic microstructure
Is a pneumatic system open or closed?
A pneumatic system is typically considered a closed system. This means that the air or gas used for power is contained within the system and circulates through it without being released into the environment. However, during operation, some air may escape, but the overall design aims to minimize such losses.
Can you use unc screws in apart that has unf threads?
No. The coarse thread UNC screws will not thread into the fine thread UNF holes. UNC must be used with UNC and UNF with UNF.
