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SHIELDING GASES
Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.
Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications.
What are types of raft foundation? Define according to rigid mat deign. One of the common types of raft foundation is the flat concrete slab 0.75 to 2.00 m thick with a two way
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Properties of Aluminium Alloys: Among the different properties of aluminium alloys given are notable as: (a) Low density as 2.7 gm/cc (b) Elevated electrical and therma
Road under Special Conditions: Roads passing through difficult terrain and environmental conditions require special attention in design, construction and maintenance. The foll
What is the turnaround time for a 10-page assignment?
Orthographic Projections: As you learned previously about the theory of projection of points, planes and lines, the next significant is the projection of solids that have thre
Q. What is Air Intakes? Air is drawn from the atmosphere for a variety of process and equipment uses, including: • Combustion air (fired heaters, boilers, gas turbines, int
An open topped tank with a base area of 1m2 contains a layer of water 0:5m deep below an oil layer 1m deep. If the densities of water and oil are 1000kg=m3 and 850kg=m3 respectivel
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Important section of fly-overs and underpasses: Culverts : A structure having a waterway upto 5 m. Minor Bridge : A structure having a waterway of 6-30 m. Medium Si
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