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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 the factors responsible for the development of newer tool materials. Explain several materials used for cutting tools. List four kinds of tool wear.
(a) What are the types of material used for making spanners? What are the uses of spanners? (b) Write down the uses of following tools and make neat sketches of the same : (i
Problem s on Cantilever Truss: In the case of cantilever trusses, it is not required to determine the support reactions. The forces in members of cantilever truss are obtaine
Rope drive: What do you mean by the term rope drive? Sol: The ropes are circular in section. Rope-drive is mostly used when distance between the driving shaft and drive
Draw complete shear and moment diagrams for a 3 m long cantilever beam having a uniform distributed load of 2 kN/m along its length.
Shifting of Gears: To obtain different size combinations of gears, the gears slide on their shafts to mesh with different gears. The position of different gears, e.g. 1st, 2nd, 3r
Find out Moment of Inertia of circular area: Find out Moment of Inertia of circular area of radius a = 10 cm about its centroidal axis OX as illustrated in Figure Sol
The water jet should not directly fall on speedometer, spark plug, steering cone race and electrical connections. During washing there is a possibility of water entry below the sea
A space craft ‘A' has velocity 0.9 c relative to the earth. Another spacecraft ‘B' overtakes A with relative velocity 0.5 c. Find the velocity of spacecraft B relative to the groun
why G2 is introduced in michelson interferometer tell with proper diagram
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