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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.
Determine the work done per minute by a punch tool making 20 working strokes min when a 30 mm diameter hole is punched in 5 mm thick plate with ultimate shear strength of 450 MPa i
what is clearance?what is the need of clearance?differences between with clearance and with out clearance?
Calculate the Machining Time and the Material Removal Rate A through hole of 40 mm diameter and 50 mm depth is to be drilled in a mild steel component. The cutting speed can b
A tin and lead alloy is commonly known as solder. Usually solder is a wire with a rosin core used for soldering. The rosin core acts as a flux.
Effect of Individual Alloying Elements: Sulfur Sulfur is not a needed element in steel since in interferes along with hot rolling and forging resulting in hot-shortness
Derive the mathematical expression for temperature distribution for plane wall with internal heat generation when both the surfaces are at same temperature?
how to derive lamis equations
Convert the following readings of pressure to KPa absolute, assuming that the barometer reads 760mm Hg: (a) 100 psig, (b) 8in. Hg vacuum, and (c) 76in Hg gage.
What is an open pair?
Coplanar and Non-Coplanar Forces: In this unit, you have learnt to identify the different systems of forces. You have also learnt the many techniques of adding the forces to g
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