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In a lead Tin(Pb-Sn) system the following invariant reaction was observed at a temperature of 183°C (19% Sn) +(97% Sn)=Liquid (62% Sn). Liquid melting point of Lead and Tin are 327°C and 232°C i) Draw the phase diagram ii) Calculate the fraction of total a in the alloy containing 80% at 182°C
Describe Gibbs phase rule
Sketch and describe liquid metallurgy to produce MMCs
An epicyclic gear consists of bevel wheels as shown in Fig. 13.49. The driving pinion A has 20 teeth
and meshes with the wheel B which has 25 teeth. The wheels B and C are fixed together and turn freely
on the shaft F. The shaft F can rotate freely about the main axis X X. The wheel C has 50 teeth and
meshes with wheels D and E, each of which has 60 teeth. Find the speed and direction of E when A
rotates at 200 r.p.m., if
1. D is fixed, and 2. D rotates at 100 r.p.m., in the same direction as A.
In both the cases, find the ratio of the torques transmitted by the shafts of the wheels A and E, the
friction being neglected
An epicyclic reduction gear has a shaft A fixed to arm B.The arm B has a pin fixed to its outer end and two heard C and E which are rigidly fixed,revolve on this pin. Gear C meshes with annular wheel D and gear E with pinion F.G is the driver pulley and D is kept stationary.The number of teeth are:D=80,C=10,E=24 and F=18.If the pulley G runs at 200r.p .m,find the speed of shaft A.
A steel alloy has a microstructure consisting of ferrite and coarse pearlite. What type of alloy is this and what type of heat treatment did it undergo?
Two reservoirs are connected by a 5000 m long and 1.5 m diameter C.I pipe with f = 0.01 . The difference in water levels in two reservoir is 25 m. Determine the increase in discharge if the C.I pipe is replaced with a smooth steel pipe of same size with f = 0.005.
Investigate and explain the procedure by which mechanical engineers or motor mechanics fasten engine bolts by using ratchet.
Explain the nature of hydraulic accumulators and bottle jacks' application and biases.
Give your own analysis (with practical examples) on the circumstances or conditions in which hydraulic accumulators and bottle jacks are used.
