AMP 2017

Q1(a) What is the process of Powder Metallurgy (PM)?

Q1(b) What are the 2 main applications or uses of PM product?

Q1(c) List any 5 advantages of the Powder Metallurgy (PM) process.

Q2(a) What are the three basic categories of polymers 5 marks

Q2(b) How do the properties of thermosetting polymers differ from those of thermoplastics?

Q2(c) Cross-linking (curing) of thermosetting plastics is accomplished by one of three ways. Name the three ways.

Q2(d) The barrel and screw of an extruder are generally divided into three sections; identify the sections.

Q2(e) What are the functions of the screen pack and breaker plate at the die end of the extruder barrel?

Q3(a) Metrology is the science of measurement. In this context explain the following terms: Accuracy and Repeatability.

Q3(b) A Coordinate Measuring Machine (CMM) has 4 methods of operation and control. List these and explain the 2 most commonly used methods.

Q3(c) Machine Vision Applications can be divided into 4 categories. List and explain the 2 most common categories.

Q4(a) What is the process of EDM?

Q4(b) Describe the process of WEDM.

Q4(c) How does a WEDM machine produce tapered components.

Q5(a) Commercially available, sheet metal processing machines combine Laser Beam cutting and what other process?

Q5(b) What does AWJM stand for

Q5(c) What is the difference between a jig and a fixture?

Q5(d) A workpiece, theoretically suspended and free in space, is free to move in any direction. It is said to have 12 modes or degrees of freedom. What are these?

Q5(e) What is the purpose of the abrasives in electrochemical grinding?