Andhra University BE/B.Tech Mechanical Engineering Manufacturing Technology- III 2012 Paper
1.(a) What is positioning in a CNC machine?
(b) What is backlash in gears?
(c) What is robot?
(d) State the difference between measuring instrument and a guage?
(e) What are the essentials for good comparator?
(f) Name the acceptance test for machine test?
(g) What are the features of stylus instruments?
2 .Describe vertical turning centres. Explain their features, limitations an applications
3. What is machine control unit in CNC machine? How does it work? Explain?
4 Explain clearly Various acceptance tests used for testing laser equipments?
5(a) List the types of comparators .Explain the working ,applications and limitations of any two?
6(a)Give the working principle of NC Machines .Also indicates its advantages?
7(a)Describe clearly how different parameters of screw threads are measured?
8(a)Explain full about measurement and checking of squareness ,flatness and roundness
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