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(a) A steel bolt 650 mm2 cross-sectional area passes centrally through a copper tube to 1200mm2 cross-sectional area. The tube is 500mm long and closed by rigid washers, which are fastened by the threads on the steel bolt. The nut is now tightened by ¼ of a turn. Evaluate the stress in the bolt and the tube if the pitch of thread is 3 mm. Take :
Es = 2.05 x 105 N/mm2
Ec = 1.1 x 105 N/mm2
(b) Differentiate between ductile and brittle materials. Name any five ductile and brittle materials.
Due Diligent: There are many literatures on sand blasting and manufacturing processes. Historically, sand blasting had been used for many tasks before. It was pretty famous
a) The total estimated time for an operation ie assembly of a pin is 2 minutes. If the rating is 120% determine normal time. If total allowances allowed are 10% for that job, calcu
Torque of Multiple and Different Sized Fasteners: First tighten all fasteners by the help of free hand. Then torque big fasteners first followed by torque of smaller fasteners in
• insulation thickness • heat tracing type (glycol, electric, steam): • controlled or self-limiting • traps • identification • requirements limits
Principles Governing Rural Roads Design Standards: The following principles should govern in design of rural roads : (a) Rural Roads are low volume facility serving an acc
(a) Describe a vector and scalar ? (b) What is meant by line of action of vector ? (c) What are displacement vectors and position vector ? (d) Calculate the component of t
If the expression is quasi-static, determine Q, ΔU and W for the process. In another process the same system expands according to the similar pressure- volume relationship and f
how forces are balanced for a 3 cylinder engine ?
Material Utilized For Composites Composite presents a very broad range. From usual reinforced concrete to metal- metal fibre composites of high strength are in employ. The stre
basics of static balancing.
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