What type of current is used in arc welding?

What type of current is used in arc welding? Both direct current (D.C.) and alternating current (A.C.) are used for arc welding. The alternating current for arc is obtained from a step down transformer. The transformer receives current from the main supply at 220 to 440 volts and step down to required voltage i.e., 80 […]

How do you find the maximum theoretical efficiency?

How do you find the maximum theoretical efficiency? The maximum theoretical efficiency of a heat engine (which no engine ever attains) is equal to the temperature difference between the hot and cold ends divided by the temperature at the hot end, each expressed in absolute temperature (Kelvin). What is the theoretical maximum efficiency? The Carnot […]

What is a non-Newtonian fluid examples?

What is a non-Newtonian fluid examples? Ketchup, for example, becomes runnier when shaken and is thus a non-Newtonian fluid. Many salt solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as custard, honey, toothpaste, starch suspensions, corn starch, paint, blood, melted butter, and shampoo. What is meant by Newtonian fluid? […]

What type of machine is an inclined plane?

What type of machine is an inclined plane? simple machines Is an inclined plane a simple machine? Simple machine, any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform work. The simple machines are the inclined plane, lever, wedge, […]

Why is torsion test important?

Why is torsion test important? Torsion testing is necessary when engineers wish to change or update the materials used in these products. For example, the metal used in vehicle drive trains experiences a complex combined loading when in use, with torsion being the main component. Which of the following Cannot be determined using a torsion […]

Does technology always improve society?

Does technology always improve society? Medical technology is always improving, leading to lower infant mortality, cures for diseases, and many more improvements in quality of life. Mental health and comfort, however, have not improved as technology has advanced. Technology makes us think that it improves our quality of life without actually improving it. How has […]

What is the process of designing green buildings called?

What is the process of designing green buildings called? Also known as green construction, a sustainable building refers to both a structure and the using of processes that are environmentally responsible and resource-efficient throughout a building’s life-cycle: from siting to design, construction, operation, maintenance, renovation, and demolition. What is green building process? Green building (also […]

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