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

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

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Casting - Pattern & Casting
Casting - Pattern Functions
Casting - Pattern Materials
Casting - Pattern Types
Casting - Pattern Design
Casting - Pattern Making
Casting - Pattern Fillets
Casting - Finishing Patterns
Casting - Pattern Colours
Casting - Jointing Materials
Casting - Mold Materials
Casting - Molding Sands
Casting - Molding Sand Binder
Casting - Sands Properties
Casting - Refractory Sands
Casting - Grain Size & Shape
Casting - Bonding Theory
Casting - Fire Clays & Illite
Casting - Sand Mixtures
Casting - IIndian & Core Sand
Casting - Core Mix Preparation
Casting - Sand Preparation
Casting - Molding Sand Testing
Casting - Core Functions
Casting - Cores Making
Casting - Cores Baking
Casting - Cores Finishing
Casting - Cores Types
Casting - Dielectric Core Baker
Casting - Cores Setting
Casting - Core Application
Casting - Molds Types
Casting - Molding Processes
Casting - Ramming Mold Box1
Casting - Ramming Mold Box2
Casting - Green Sand Molding
Casting - Hand Molding
Casting - Mold Making Steps
Casting - Moulds Venting
Casting - Cores & Mold Forces
Casting - Mold Metal Reaction
Casting - Green Sand Mould
Casting - Gating Systems
Casting - Gating Design
Casting - Riser Functions
Casting - Risers Types
Casting - Riser Design - 1
Casting - Riser Design - 2
Casting - Solidification
Casting - Aspiration Effect
Casting - Friction Effects
Casting - Melting Furnaces
Casting - Metals Gases
Casting - Casting Cleaning
Casting - Sand Castings
Casting - Special Techniques
Casting - Shell Moulding
Casting - Precision Investment
Casting - Permanent Mould
Casting - Die Casting
Casting - Gravity Die Casting
Casting - Vacuum Die Casting
Casting - Low Pressure Die
Casting - Centrifugal Casting
Casting - Continuous Casting
Casting - Squeeze Casting
Casting - Slush Casting
Casting - CO2 Process
Casting - Inspection & Testing
Casting - Inspection Procedure
Casting - Visual Inspection
Casting - Dimensional Inspect
Casting - Mechanical Property
Casting - Destructive Testing
Casting - Non Destructive Test
↓ Solidification ↓
Casting - Mechanism
Casting - Solidification Rate
Casting - Insulating Mould
Casting - Interface Resistance
Casting - Surface Temperature
Casting - Mould Resistance
Casting - Riser Placement
Casting - Residual Stress
Casting - Defect Classification
Casting - Salvaging Technique1
Casting - Salvaging Technique2
Casting - Mechanization
Casting - Mechanized Foundry
Casting - Mechanized Steps
Casting - Molding Machines
Casting - Core Machines
Casting - Foundry Health - 1
Casting - Foundry Health - 2
Casting - Dust Measurement
Casting - Dust Control
Casting - Dust Equipment
Casting - Preventive Elements
Casting - Pattern Allowances
Casting - Heating & Pouring
Casting - Hot & Cold Chamber

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Casting Questions and Answers – Residual Stress

Posted on August 14, 2018 by Manish

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

1. Residual stresses are also known as locked-in stresses.
a) True
b) False
View Answer

Answer: a
Explanation: Residual stresses or locked-in stresses are defined as the stresses existing within a body in the absence of external loading or thermal gradients. In other words, residual stresses in a material or component are those stresses which exist in the body without the application of any other external loads or forces.
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2. Manufacturing process is the only consideration which can cause residual stresses in the casting.
a) True
b) False
View Answer

Answer: b
Explanation: Manufacturing process is not only the single consideration which can cause stress. Residual stresses may be present in any mechanical component because of many causes. Residual stresses can be due to the technological process used to make the parts of casting, but manufacturing processes are the most common causes of residual stress.

3. Localized yielding of material can also be the reason for the generation of residual stresses in the casting.
a) True
b) False
View Answer

Answer: a
Explanation: Localized yielding of material can induce residual stresses in the casting, because of a sharp notch or from various surface treatments like shot peening or surface hardening. To relieve residual stresses from the casting. Usually, heat treatment of the casting is done which also enhances mechanical properties in the casting product.

4. Residual stresses can cause any defects in the casting except distortion of the casting component.
a) True
b) False
View Answer

Answer: b
Explanation: Residual stresses can be sufficient to cause any defects in the casting. It can split the metal part into two or more pieces abruptly without any application of external load or force. Residual stresses can also result in distortion of the casting component, which cannot regain its original shape easily.

5. Residual stresses can also be calculated the same way as the stresses due to the external loads is calculated.
a) True
b) False
View Answer

Answer: b
Explanation: Residual stresses have the same role in a component’s strength as common mechanical stresses. However, the stresses due to external loads can be calculated with accuracy, but residual stresses are difficult to calculate. Therefore, it is very necessary to have a reliable method able to measure them with minimum damage to the surface of the casting.
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6. The presence of residual stresses in a component can prevent failure of the casting component.
a) True
b) False
View Answer

Answer: a
Explanation: Residual stresses may play an important role in explaining or preventing failure of a component at times. For example, shot peening of component to induce surface compressive stresses, in which residual stresses prevent failure and also improves the fatigue life of the component. But the internal or residual stresses should be kept balanced in the casting component.

7. By using resin bonded sand in the making of mould, the stresses produced in the casting can be reduced.
a) True
b) False
View Answer

Answer: a
Explanation: By using resin bonded sand in the making of mould, deformability of the mould and core is always improved which helps in reducing the internal stresses in the casting produced. The stresses are also reduced by increasing the holding time of casting in the mould, so as to reduce the difference in temperature distribution.

8. Natural aging treatment is a fast and accurate method for reducing residual stresses in the casting compared to the heat treatment.
a) True
b) False
View Answer

Answer: b
Explanation: In natural aging treatment, generally the casting component is stored for several years to make the residual stress released slowly. This method takes long time and it is only suitable to the production of small-batch and larger casting components. And heat treatment does not take much of time depending on the type of heat treatment.

9. Machinability of the casting product can be improved by reducing the residual stresses in the casting.
a) True
b) False
View Answer

Answer: a
Explanation: Reducing the casting residual stresses can improve the machinability of the casting and increases tool life also. On the other hand, the castings machined after reducing the residual stresses have good dimensional stability, persistent precision and good reliability of the casting products.

10. Cold cracking failure of the casting product can be avoided by shot peening method which induces internal stresses in the casting.
a) True
b) False
View Answer

Answer: b
Explanation: Cold cracking is basically caused by residual stresses exceeding the limitation of the casting’s strength. It normally appears at the tensile sites of the castings, especially at the sites of stress concentration. Shot peening method, instead of avoiding this defect, it increases the chances of cold cracking by inducing more stresses into the casting product.
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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 – Classification of Defects & Factors Affecting Salvage of Castings »
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Deep Dive @ Sanfoundry:

  1. Manufacturing Engineering / Processes I Questions and Answers
  2. Materials Science Questions and Answers
  3. Geotechnical Engineering Questions and Answers
  4. Prestressed Concrete Structures Questions and Answers
  5. Strength of Materials Questions and Answers
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  8. Casting Questions and Answers – Continuous Casting
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  10. Geotechnical Engineering Questions and Answers – Stress Distribution in the Vicinity of Shafts
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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