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A semi-elliptic multi-leaf spring is needed for the suspension of the rear axle of a truck. It consists of two extra full-length leaves and ten graduated length leaves including the master leaf. The centre - tocentre distance between the spring eyes is 1.2 m. The leaves are build of steel 55Si2Mo90 (Syt = 1500 n/mm2 and E = 207000 N/mm2) and the factor of safety is 2.5. The spring is to be designed for a maximum force of 30 KN. The leaves are pre-stressed so as to same stresses in all leaves. Evaluate :
(i) The cross-section of leaves, and
(ii) the deflection at the end of the spring.
Problem - Newton's Second Law in 2D A tow truck tows a 1000-kg car by applying a force of 1000 N north-northeast (67.5° above the x-axis). a) What are the components of th
An aircraft moving with speed of 1200 Km/hr, uses simple air refrigeration cycle for air conditioning. The ambient temperature and pressure are 0.35 bar and - 10 o C respectively.
(a) Enlist and describe the several mechanical properties of commonly used engineering materials. (b) State the objectives and applications of case-hardened components.
Technical Limitations of Extension of screw conveyor Technical Limitations: Breakdown of hinged joint at intermediate condition of link. ?Not proper extension of coaxi
Determine reactions force: Thr e e sphere A , B and C weighing 400N, and 200N and having radii 400mm, 600mm and 400mm respectively are placed in trench as shown in t
define elastomer.explain in details?
Airport Drainage: Rainwater should be quickly taken away from the runway, taxiway and apron areas. For drainage of runway and taxiway, a cross-slope of 1.5 per cent on either
Beam: Sol.: A beam can be defined as a structural element which has one dimension (length) considerable larger As compared to the other two direction, which is breadth an
Requiremen t of Temperature Scale: The temperature scale on which temperature of the system can be read is required to assign the numerical values to the thermal state of the
(a) Following consideration were recorder during a test on a single cylinder oil engine : Bore = 300 mm; speed =300 r.p.r.; stroke = 450 mm; net break load = 1.5KN;
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