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Polymer Science and Engineering

Twin screw extruder

Exams

GATE XE

Years

2023
2025

Subjects

Polymer Science and Engineering

Topics

Twin screw extruder
Analysis of polymers using IR, XRD, thermal (DSC, DMTA, TGA), optical and electronic techniques
Biopolymers such as PLA, PHA/PHB
Choice of polymers for blending, blend miscibility-miscible and immiscible blends
Concept of intermolecular order (morphology)
Concept of molecular weight distribution and its significance
Copolymerization
Cross-linking and vulcanization
Crystalline transition
Different compounding ingredients for rubber and plastics and their function
Extrusion
Glass transition
Injection molding
Kinetics of polymerization
Measurements of rheological parameters by capillary rotating parallel plate, cone-plate rheometer
Melting transition
Molecular/segmental deformations at different zones and transitions
Natural and synthetic rubbers
Particulate, long and short fibre reinforced composites
Polymer Science
Polymer crystallinity
Polymer processing
Polymer reinforcement
Recycling of thermoplastics, thermosets and rubbers
Solubility and swelling
Techniques for polymerization
Thermodynamics
Visco-elasticity- creep and stress relaxations
Viscosity and rheology
Vulcanization kinetics
X-ray Diffraction

List of top Polymer Science and Engineering Questions on Twin screw extruder asked in GATE XE

Choose the option(s) that correctly match(es) the Zones with their typical Functions in an industrial extruder.

GATE XE - 2025
GATE XE
Polymer Science and Engineering
Twin screw extruder

Lipase is a natural enzyme, which cleaves carboxylic ester bonds. Among the options given, identify the polymer(s) degraded by lipase.

GATE XE - 2023
GATE XE
Polymer Science and Engineering
Twin screw extruder