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