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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.
Planning A New Airport: Elements of Airport Planning The elements of planning for a new airport are : (a) Demand Forecast (b) Site Selection (c)
how can I add decibels
Brass is an alloy of (A) Copper and zinc. (B) Copper and iron. (C) copper and Aluminium. (D) Copper and tin. Ans: Brass is an alloy of copper and zin
How is gas cutting torch different from the gas welding torch .explain
Need of a spectrophotometer: The specific instructions will differ with other models, but the principles remain. 1. The instrument must have been warm for at least 15 min.
Rankine cycle - Thermodynamics: The major problems of Carnot cycle is compressing very wet steam mixture from the condenser pressure up to boiler pressure. The trouble can be
calculate the dryness fractin of steam which has 1.5kg of water in suspension with 50kg of steam
Determine the economic order quantity: Determine the economic order quantity and the reorder point. Given Annual demand (D) = 2,000 units Average daily demand (d) = 2,00
Explain desirable properties of modeling and differentiate between the process of casting and modeling. Also highlight the advantages and disadvantages of casting process and model
Objectives After studying this unit, you should be able to explain various procedures in service and maintenance, and appreciate the importance of the inspections
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