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A lap joint needs to be designed using 20-mm diameter bolts to carry a load of 120 kN on the connecting plates. If the shear stress in each rivet is not to exceed 90 MPa, determine the number of bolts needed.
water enters one end of a long coiled tube at 5000 kpa 220c at a steady rate of 2.20kgs. it is heated as it passes
a stream of refrigerant-134a at 1 mpa and 12 c is mixed with another stream at 1 mpa and 60 c. if the mass flow rate of
Determine (a) the horizontal line along which the shearing stress is a maximum, (b) the constant k in the following expression for the maximum shearing stress.
10 kg of water in a piston-cylinder arrangement exists as saturated liquidvapor at 100 kpa with a quality of 50. it is
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.901 and exits as a saturated liquid. the steam is
a 230-v shunt motor develops a torque of 40 ib-ft when the armature current is 11 a. find the torque developed when the
carbon dioxide co gas initially at t1 530 r p1 15 lbfin2 and v1 1 ft3 is compressed in a piston-cylinder assembly.
helium gas expands from 125 kpa 350k and 0.25m3 to 100 kpa in a polytropic process with n 1.667 or 53. is the work
How the lubricants reduce the friction and wear characteristics of the parts in contact?
water flowing in a horizontal 30 cm diameter pipe at 5 ms and 300 kpa gage enters a 90o bend reducing section which
A hydraulic shear applies 2000 lb force to a wedge. It is used to shear plate steel to rough size. The shear has a 1/4 inch thick cutting blade with a 45 degree slope. What is the ideal mechanical advantage of the wedge?
the man pulls the boy up to the tree limb by walking backward. if he starts from rest when 0 and moves backward with a
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