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Casting, Forming & Welding II Multiple Choice Questions | MCQs | Quiz

Casting, Forming & Welding Interview Questions and Answers
Practice Casting, Forming & Welding - II questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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Casting - Plastic Processing-1
Casting - Plastic Processing-2
Casting - Injection Moulding - 1
Casting - Injection Moulding - 2
Casting - Blow Moulding - 1
Casting - Blow Moulding - 2
Casting - Polymer Extrusion-1
Casting - Polymer Extrusion-2
Casting - Foundry Industry
Casting - Foundry Metals
Casting - Cast Irons - 1
Casting - Cast Irons - 2
Casting - Aluminium & Alloys
Casting - Copper Alloys - 1
Casting - Copper Alloys - 2
Casting - Magnesium Alloys-1
Casting - Magnesium Alloys-2
Casting - Foundry Fluxes
Casting - Titanium Alloys
Casting - Steel Melting
Casting - Degassing Methods
Casting - Coldset Resin Binder
Casting - Gas Vapour Binders
Casting - Gasvapour Properties
Casting - Sand Reclamation
Casting - Tem Tech Sands
Casting - Core Sands Testing
Casting - Remelting Furnace
Casting - Cupola
Casting - Cupola Effiicency
Casting - Coke Bed Charge
Casting - Air Requirements
Casting - Cupola Calculations
Casting - Reverberatory
Casting - Rotory Furnace
Casting - Open Hearth Surface
Casting - Converter
Casting - Crucible Advantages
Casting - Crucible Furnaces
Casting - Electric Furnace
Casting - Direct Arc Furnace
Casting - Rocking Furnace
Casting - Induction Furnace-1
Casting - Induction Furnace-2
Casting - Disadvantages
Casting - Techniques
Casting - Laser Beam Melting
Casting - Dye Penetrant Test
Casting - Magnaflux Test
Casting - Eddy Current Test
Casting - Ultrasonic Inspection
Casting - Radiography
Forming - Metal Processes
Forming - Metal Classification
Forming - Metal Behaviour
Forming - Hot Rolling Basics
Forming - Flat Rolling Basics
Forming - Roll Pass Principle
Forming - Rolled Parts Defects
Forming - Open & Closed Die
Forming - Drop Forging
Forming - Extrusion & Wire
Forming - Blanking & Piercing
Forming - Sheet Metal Die
Forming - Forging
Forming - Plastic Deformation
Forming - Shear Yield Stress
Forming - Hot & Cold Forming
Forming - Metal Lubrication
Forming - Electromagnetic
Forming - Pure Iron Curve
Forming - Steel Inverse Curve
Forming - Steel Transformation
Forming - Heat Treatment
Forming - Normalization
Forming - Deep Drawing
Forming - Cold Rolling
Forming - Metallurgical Aspect
Forming - Thread Rolling
Forming - Stretch Forming
Forming - Rod & Tube Drawing
Forming - Swaging
Forming - Tube Making
Forming - Forging Temperature
Forming - Tools & Appliances
Forming - Smith Forging
Forming - Die Forging
Welding - Weldability
Welding - Welding Types
Welding - Weld Metallurgy
Welding - Gas Welding
Welding - Oxy-Acetylene
Welding - Arc Welding
Welding - Arc Equipment
Welding - Arc Methods
Welding - Resistance Methods
Welding - Thermit Welding
Welding - Solid State Welding
Welding - Oxygen Basics
Welding - Welding Metals
Welding - Adhesive Bonding
Welding - Riveting

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Casting Questions and Answers – Extrusion in Polymers – 1

Posted on August 15, 2018 by Manish

This set of Casting, Forming and Welding Multiple Choice Questions & Answers (MCQs) focuses on “Extrusion in Polymers”.

1. Which of the following material is not used in extrusion?
a) Wax
b) Granules
c) Powder
d) Pellets
View Answer

Answer: a
Explanation: Extrusion is a process of forcing plastic which is at a very high temperature, through the dies, and gets opened at a required shape. The raw materials used for extrusion with polymers contains granules, powder and thermoplastic pellets.
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2. In extrusion process, extra shearing occurs in which part of the system?
a) Feed section
b) Pumping section
c) Collapse section
d) Transition section
View Answer

Answer: b
Explanation: The section where an additional amount of melting and shearing occurs is called as pumping section.

3. Melting section is another name for which section?
a) Feed section
b) Transition section
c) Pumping section
d) Collapse section
View Answer

Answer: b
Explanation: Melting section is one of the types of extrusion in polymers. Extrusion is a process of forcing plastic which is at a very high temperature, through the dies, and gets opened at a required shape. Melting section is another name for transition section.

4. How are extruded materials cooled?
a) Water
b) Contact with chilled surface
c) Air
d) Oil
View Answer

Answer: d
Explanation: On completion of extrusion, the material is very hot and has to be cooled down. There are various agents which are used cooling these materials down, such as, air or water or its direct contact with a very cold surface.

5. Which of the following is not an important factor of cooling in extrusion?
a) Reduction in shrinkage
b) Reduction in distortion
c) Ease of adding colours
d) Rate of cooling
View Answer

Answer: c
Explanation: There are various factors of cooling, a few of them are, reduction in shrinkage, reduction in distortion and the rate of cooling too has to be considered.
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6. Which of the following is not an application of polymer extrusion?
a) Door insulation seals
b) Chewing gums
c) Cables
d) Circuit boards
View Answer

Answer: d

7. Film extrusion process, best involves film having thickness below what length?
a) 0.2 mm
b) 0.3 mm
c) 0.4 mm
d) 0.5 mm
View Answer

Answer: d
Explanation: Extrusion of films is one of the most important processes in extrusion. For the films having thickness below 0.5 mm, these films are best suited for extrusion and can be further applied for making, various bags.

8. In cable extrusion process, what is the speed of product winding?
a) 40 m/sec
b) 50 m/sec
c) 60 m/sec
d) 70 m/sec
View Answer

Answer: b
Explanation: For the insulation purpose, the coating of any wire or cable is one of the most vital polymer extrusion process. The wire is cooled and then it is wound to large spools at a speed of 50 meters per second.

9. Calendering is mostly suited for making PVC.
a) True
b) False
View Answer

Answer: a
Explanation: Calendering process is considered to be one of the most important sheet forming process. Calendering has many products like phenyl, cellulose or vinyl floor tiles. It is most suited for making PVCs.

10. Tubes having U shape cannot be manufactured by polymer extrusion process.
a) True
b) False
View Answer

Answer: b
Explanation: Polymer extrusion has variety of applications such as, candy canes, chewing gums, window frames, solid rods, pipes or tubes having U or J sections.
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Sanfoundry Global Education & Learning Series – Casting, Forming and Welding.

To practice all areas of Casting, Forming and Welding, here is complete set of 1000+ Multiple Choice Questions and Answers.

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« Casting Questions and Answers – Blow Moulding and Thermoforming – 2
Casting Questions and Answers – Extrusion in Polymers – 2 »
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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer and SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage & Cluster Administration, Advanced C Programming, SAN Storage Technologies, SCSI Internals and Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him below:
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