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A helical compression spring is used to take the shock. The initial compression of the spring is 30 mm and it is further compressed by 50 mm while absorbing the shock. The spring is to absorb 250 J of energy during the procedure. The spring index will be taken as 6. The spring is made of patend and cold drawn steel wire with ultimate tensile strength of 1500 N/mm2 and modulus of rigidity of 81370 N/mm2 . The permissible shear stress for the spring wire could be taken as 30 % of the ultimate tensile strength. Design the spring.
Loose piece pattern This type of pattern is also used when the contour of the part is such that withdrawing the pattern from the mould is not possible. Hence during moulding th
Work - thermodynamics: The work can be defined as follows: "Work is defined as energy transferred across the boundary of a system due to an intensive property difference ot
a) Show that if E is assumed to be correctly calculated, an error of 1% in the evaluation of C will involve an error of about 6% in the determine of Poisson's ratio when its correc
Formation (Embankment): The formation is the earthen embankment on which the other components of the track rest. For supporting the heavy loads, the earth should be of good q
Pliers: Pliers are used just for gripping or wire cutting and should never be used as substitute for spanners. The following types of plier are used : (a) Side cutting pliers
Q. Requirements for vessels with thickness? The following additional requirements are applicable, as specified, to Carbon Steel and Low Alloy steel pressure vessels with main
Determine the resultant of the system of forces: Four forces act on a body as illustrated in Figure. Determine the resultant of the system of forces. Figure Sol
A semi-elliptical laminated vehicle spring to took a load of 6000 N is to consist of seven leaves 65 mm wide, two of the leaves extending the full length of the spring. The spring
what is the equipment of smaw welding machine?
a) An epicyclic gear have three wheels A, B and C. Wheel A has 72 internal teeth, wheel C has 32 external teeth. The wheel B gears with both A and C is carried on an arm which move
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