665199
Description
Quiz by Charlotte Camilla, updated more than 1 year ago
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Created by Charlotte Camilla
about 10 years ago
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|
Question 1
Question
Which of These is Not a Cross Sectional Shape?
Answer
-
Hollow
-
Eliptical
-
Cylindrical
-
Fragmented
-
Trilobal
Question 2
Question
Which of These is Not a Cross Sectional Shape?
Answer
-
Hollow
-
Eliptical
-
Cylindrical
-
Fragmented
-
Trilobal
Question 3
Question
Which of the Following Would You Look For in a Natural Fibre?
Answer
-
Uneven Width
-
An Unusual Cross Sectional Shape
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Irregular Surface
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Scaly Appearance
-
The Presence of Delustrants
-
Smooth Surface
Question 4
Question
Interference Colours Viewed Under Polarising Light Microscopy Are Best Seen on White Fibres.
Answer
- True
- False
Question 5
Question
Interference Colours Give a Good Indication of the Type of Fibre Being Examined. A 1st Order Fibre is Likely To Be....?
Answer
-
Polyester
-
Acetate
-
Nylon
Question 6
Question
The Michel-Levy Chart is Used for Colours Seen With a Red Compensator Plate.
Answer
- True
- False
Question 7
Question
What Analytical Techniques Would You Use on Fibres?
Answer
-
Micro - Spectrophotometry
-
Thin Layer Chromatography
-
Infra-Red
-
Gas Chromatography
-
GC - Pyrolysis
-
Physical Fit
Question 8
Question
Which of These Illumination Types Would You Use in Fibre Examination?
Answer
-
Bright Field Illumination
-
Crossed Polars Illumination
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UV Light Illumination
-
Blue Light Illumination
Question 9
Question
The Equation to Calculate the Refractive Indices of a Fibre (n) is:
n = (speed of light in vacuum/speed of light in fibre).
Answer
- True
- False
Question 10
Question
Birefringence = (Optical path difference/thickness of fibre in micrometers).
Answer
- True
- False
Question 11
Question
What is the Meaning of Anisotropy?
Answer
-
Light Travels at Different Speeds in Different Directions in the Fibre.
-
Light Travels at Different Speeds in the Same Direction in the Fibre.
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