Download GTU B.Tech 2020 Winter 7th Sem 2172109 Materials Characterization Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2172109 Materials Characterization Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2172109 Date:30/01/2021
Subject Name:Materials Characterization
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.
Q.1
(a) State the importance of materials characterization.
03

(b) Write the difference between Positive Replica and Negative Replica.
04

(c) Write short note on Differential Thermal Analysis..
07


Q.2
(a) What is the purpose of moleculer sieve in sorption pump?
03

(b) What do you understand by vertical resolution?
04

(c) Explain in detail the principle, working, advantages and applications of 07
SEM




Q.3
(a) Explain the phenomenon of cryotrapping.
03

(b) Write short note on Colour Metallography
04

(c) What do you understand by optical Abberation? Explain the off axis 07
aberrations with its remedies in detail.




Q4
(a) Draw the schematic diagram illustrating the principle of Metallurgical 03
microscope.

(b) List the application of Transmission Electron Microscopy.
04

(c) Write short note on field ion microscopy.
07



Q.5
(a) Write short note on formvar replica.
03

(b) Explain the technique that can be used for the observation of liquation of 04
constituents.

(c) Explain Electron Probe Micro Analysis (EPMA) in detail.
07



Q.6
(a) State the electrolyte and conditions for electrolytic polishing to prepare 03
replica.

(b) Write short note on Image Analyzer.
04

(c) What is X-ray diffraction? Derive Bragg's law.
07
Q.7
(a) Explain the terminology 1) Numerical Aperture 2) Resolving power
03

(b) Which technique is used to find out the elemental analysis of geological 04
material? Explain its principle in brief.

(c) Explain the application of XPS (ESCA) for material characterization
07



Q.8
(a) Draw a schematic diagram of arrangement of TMA.
03
(b) State the working principle of Turbo molecular pump..
04
(c) Differentiate between EDS and WDS.
07

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