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(a) How are the cutting fluids classified ? Explain every class with a couple of lines.
(b) A carbide cutting tool has tool life exponent n = 0.27. It gives a tool life of 60 min while machining a mild steel workpiece at a cutting speed of 120 m/min. calculate the tool life if its is to be cut at 20% higher cutting speed ?
(c) Write a couple of lines on :
(i) Tool life
(ii) Machineability
(iii) Machinability Index
(iv) Coated tools
Fundamentals of Electricity Current: The flow rate of charge or electrons with respect to time is known as current. It is measured in ampere (A).
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(a) What are the limitations of Reversed Carnot Cycle to be used in practice for refrigeration purposes? Also derive the mathematical expression of COP for reversed carnot cycle.
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