Metal Casting And Solidification Quiz.

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| By Monil Salot
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Monil Salot
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Quizzes Created: 1 | Total Attempts: 551
| Attempts: 551
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  • 1/10 Questions

    Which of the following is an advantage of the Green sand molding process used in a foundry?

    • Appropriate for long production run
    • Very low cost process
    • Sand is reusable
    • All of the mentioned
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About This Quiz

This Metal Casting and Solidification Quiz assesses knowledge on various casting patterns, advantages of molding processes, and load distribution in castings. It's designed for learners to understand internal defects and the role of foundry processes in making intricate parts.

Metal Casting And Solidification Quiz. - Quiz

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  • 2. 

    Foundry process is used to make intricate parts.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The foundry process is indeed used to make intricate parts. Foundry refers to the process of casting metal or other materials into a desired shape by pouring the molten material into a mold and allowing it to solidify. This process allows for the creation of intricate and complex shapes that may be difficult or impossible to achieve through other manufacturing methods. Therefore, the statement "Foundry process is used to make intricate parts" is correct.

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  • 3. 

    The property of sand due to which gas and steam escapes from sand is

    • Cohesiveness

    • Adhesiveness

    • Permeability

    • Flowability

    Correct Answer
    A. Permeability
    Explanation
    Permeability refers to the property of a material that allows the flow or passage of fluids or gases through it. In the case of sand, it has high permeability, which means that gas and steam can easily escape through the gaps and spaces between the sand particles. This property is important in various applications, such as in oil and gas reservoirs, where permeable sandstone formations allow the flow of hydrocarbons. Therefore, permeability is the correct answer to the question.

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  • 4. 

    Castings are usually designed for ________ distribution of loads.

    • Equal

    • Unequal

    • Maximise

    • Minimise

    Correct Answer
    A. Equal
    Explanation
    Castings are usually designed for equal distribution of loads in order to ensure that the weight or force is evenly distributed across the entire casting. This helps to prevent any areas of the casting from experiencing excessive stress or strain, which could lead to failure or deformation. By designing for equal distribution of loads, the casting can effectively handle the applied forces and maintain its structural integrity.

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  • 5. 

    The low permeability in sand can cause which of the following defects in casting

    • Rough Surface

    • Blow Holes

    • Hot Tears

    • Drip

    Correct Answer
    A. Blow Holes
    Explanation
    Sand with low permeability can cause blow holes in casting. Permeability refers to the ability of a material to allow fluids or gases to pass through it. In the context of casting, low permeability means that the sand used in the mold does not allow gases to escape easily during the casting process. As a result, trapped gases can cause blow holes, which are cavities or voids in the casting surface. These blow holes can affect the appearance and quality of the casting, making it an undesirable defect.

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  • 6. 

    The distortion in casting can not be prevented by

    • Modification of casting design

    • Providing distortion allowance

    • Providing sufficient machining allowance to cover the distortion effect

    • Providing proper shrinkage allowance

    Correct Answer
    A. Providing proper shrinkage allowance
    Explanation
    Providing proper shrinkage allowance is not a preventive measure for distortion in casting. Shrinkage allowance is the additional material added to compensate for the shrinkage that occurs during the solidification of the molten metal. It helps in achieving the desired dimensions and avoiding voids or porosity in the final casting. However, it does not directly address the issue of distortion, which is the warping or bending of the casting due to uneven cooling or internal stresses. Distortion can be minimized by modifying the casting design, providing distortion allowance, and ensuring sufficient machining allowance to account for any potential distortion effects.

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  • 7. 

    Which of the following pattern is used to produce a large number of castings?

    • Loose Piece Pattern

    • Gated Pattern

    • Two Piece Pattern

    • Match Plate Pattern

    Correct Answer
    A. Match Plate Pattern
    Explanation
    The Match Plate Pattern is used to produce a large number of castings. This pattern consists of two halves, a cope and a drag, which are mounted on a match plate. The cope and drag halves contain the pattern for the casting and are used to create the mold cavity. The match plate allows for quick and efficient production of multiple molds, as the cope and drag can be separated and reused after each casting. This pattern is commonly used in high-volume production processes where large quantities of castings are required.

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  • 8. 

    Which of the following is not a casting defect?

    • Swell

    • Shrinkage

    • Hot Cracks

    • Hot Tears

    Correct Answer
    A. Hot Cracks
    Explanation
    Hot cracks are a type of casting defect that occur due to the presence of high tensile stresses during solidification. They are caused by inadequate strength in the casting material or insufficient feeding of the molten metal. Swell, shrinkage, and hot tears are all examples of casting defects, but hot cracks are not.

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  • 9. 

    ______________ defects in castings cannot be identified easily.

    • Internal 

    • External

    • Metallic

    • Chemical

    Correct Answer
    A. Internal 
    Explanation
    Internal defects in castings are flaws or imperfections that are located within the material itself, beneath the surface. These defects are not readily visible from the outside and may not be easily identified without more advanced inspection techniques. Internal defects can include issues such as voids, porosity, cracks, or inclusions within the casting material.
    Identifying internal defects is often challenging because they are not apparent through visual inspection alone. Specialized methods such as X-ray testing, ultrasonic testing, or other non-destructive testing techniques may be required to reveal and evaluate these internal flaws. In contrast, external defects are visible on the surface of the casting and can be identified through visual inspection.

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  • 10. 

    In casting, gating ratio is defined as the ratio of

    • Total area : sprue area : total gate area

    • Total area : total gate area : sprue area

    • Sprue area : total area : total gate area

    • Total area : total gate area : sprue area

    Correct Answer
    A. Sprue area : total area : total gate area
    Explanation
    The correct answer is "sprue area : total area : total gate area". In casting, the gating ratio refers to the proportion of different areas involved in the casting process. The sprue area is the entry point for the molten metal, the total area includes the sprue, runner, and gate areas, and the total gate area is the area where the molten metal enters the mold cavity. Therefore, the correct order of the gating ratio is sprue area : total area : total gate area.

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  • Current Version
  • Jan 24, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 17, 2020
    Quiz Created by
    Monil Salot
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