ME2253 Engineering Materials and Metallurgy - Nov / Dec 2013 Important Questions

[Srini]

Anna University

Department of Mechanical Engineering

Fourth Semester

ME2253 Engineering Materials and Metallurgy 

( Common to Automobile Engineering )

Nov / Dec 2013 Important Questions

(Regulation 2008) 

UNIT -1
1.Write down the differences between Precision & Accuracy 
2.Differentiate random errors from systematic errors
3.Explain the types of errors with examples
4.Explain the causes of errors with suitable examples
5.Explain the classification of measuring methods 
6.Draw the block diagram of generalized measurement system and explain different stages with examples.  
7.Distinguish between Repeatability and reproducibility
8.Distinguish between Systematic and random errors
9.List various types of measuring instruments and explain each one of them
10.List the various measurement methods and explain  
11.Briefly discuss on the applications of measuring instruments
12. Briefly discuss on calibration of temperature measuring devices with suitable examples  

UNIT – 2
1 What is the constructional difference between an autocollimator and an angle dekkor. (16)
2. How the displacements are measurement using laser interferometer. (16)
3. Explain with the help of neat sketches, the principle and construction of an auto-collimator .(16)
4 Explain the working principle of mechanical comparator with a neat sketch. (16)
5. Explain the working principle of Electrical comparator with a neat sketch (16)
6. Explain the working principle of pneumatic comparator with a neat sketch. (16)
7. Explain with the help of neat sketches, the principle and construction of an Angle dekkor. 

UNIT-3 
1. Explain the construction and working of floating carriage micrometer (16) 
2. How are the major and minor diameters of thread measured. (16) 
3. Define various terminologies related with screw thread (16) 
4. Define various terminologies related with screw gears (16) 
5. Explain any two taper measurements method. (16) 
6. Explain the construction and working of Gear tooth vernier (16) 
7. Explain a method used in the measurement of surface finish and flatness 

UNIT-4 
1. Explain the interferometric measurement of angle (16)
2. Briefly explain Computer Aided inspection and Digital devices (16) 
3. Explain the working of Laser Interferometer (16) 
4. Explain Different types of CMM (16) 
5. Explain the constructional features and application of CMM. (16) 
6. Explain how profiles are checked using laser viewers (16) 
7. Explain the laser telemetric system with a suitable diagram (16) 
8. Elaborate on the topic of geometrical tolerance

UNIT-5 
1. Briefly explain various methods of measuring torque (16) 
2. Briefly explain various methods of measuring temperature (16) 
3. Briefly explain various methods of measuring flow (16) 
4. Briefly explain various methods of measuring power (16) 
5. Briefly explain various methods of measuring force (16) 
6. Explain working of Pressure thermometer and resistance thermometer. (16) 
7. Explain the construction and working of Venturimeter and Rotameter (16) 
8. Explain the construction and working of Bimetallic strip and Thermocouple