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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER VI • EXAMINATION SUMMER 2018
Subject Code: 362802 Date: 01 05 2018
Subject Name: Computer Application In Wet Processing
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1

Define term: colour. Discuss the phenomenon of perception of colour.
07





Describe working of colourimeter with neat diagram.




Q.2

What is colour order system. Explain CIE colour order system in brief.
07


CIE


Explain assessment of whiteness Yellowness indices by computer colour matching
07



OR

Draw the neat diagram of Spectrophotometer and explain its
Working in brief
07



Q.3

Write a note on reflectance curves of dyed samples.
07





Explain colour difference equation with its application.
07



OR
Q.3

Write the steps for Calibration of spectrophotometer. Give the necessity of Calibration of spectrophotometer.
07





Write advantages and limitations of computer colour matching system.
07



Q.4

Draw a flow chart for visual colour matching.
06





Write a note on After image simultaneous contrast in brief

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OR
Q.4

Draw a flow chart for computer colour matching.
06





Discuss Additive and subtractive colour mixing.




Q.5

Draw a neat and clean diagram of recording type spectrophotometer.
06





Discuss generation of Textile print design colour separation of Textile print design using CAD-CAM system


CAD-CAM

OR
Q.5

Explain Kubelka Munk theory for colour matching.
06





Discuss preparation of screen through CAD-CAM system for Textile printing.


CAD-CAM