CWI Part A(Fundamentals) 기본 모의고사 제4탄 > CWI 온라인교육

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    [Standard] CWI Part A Fundamentals Practice Quiz

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[Notice] This practice quiz is designed for a quick check 

of your fundamental knowledge. Use this set to build your 

confidence before moving on to the Premium Deep Dive sets.

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Section 1. Welding Processes & Equipment

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Q1. Which of the following welding processes uses a 

    non-consumable electrode?

    A. SMAW

    B. GMAW

    C. GTAW

    D. FCAW

Q2. What is the primary function of the shielding gas 

    in the GMAW process?

    A. To increase the welding speed

    B. To protect the molten weld pool from oxidation

    C. To provide filler metal to the joint

    D. To preheat the base metal

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Section 2. Non-Destructive Testing (NDT)

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Q3. Which of the following NDT methods is most suitable 

    for detecting internal porosity in a heavy section?

    A. PT (Liquid Penetrant Testing)

    B. VT (Visual Testing)

    C. RT (Radiographic Testing)

    D. MT (Magnetic Particle Testing)

Q4. Magnetic Particle Testing (MT) can be performed on 

    which of the following materials?

    A. Aluminum alloys

    B. Carbon steel

    C. Austenitic stainless steel

    D. Copper

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Section 3. Discontinuities & Defects

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Q5. A discontinuity that is always considered a defect 

    regardless of its size is:

    A. Porosity

    B. Slag inclusion

    C. Crack

    D. Undercut

Q6. "Overlap" is a condition where the weld metal spills 

    over the base metal surface without:

    A. Penetration

    B. Fusion

    C. Reinforcement

    D. Preheating

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Section 4. Welding Symbols & Terminology

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Q7. In a welding symbol, a "Flag" symbol at the junction 

    of the arrow and reference line means:

    A. Weld-all-around

    B. Field weld

    C. Backing weld

    D. Shop weld

Q8. The area of the base metal that was not melted but 

    had its properties changed by heat is the:

    A. Fusion zone

    B. Weld metal

    C. Heat Affected Zone (HAZ)

    D. Root zone

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Section 5. Destructive Testing

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Q9. Which test is used to evaluate the ductility of a 

    welded joint?

    A. Tensile test

    B. Guided bend test

    C. Hardness test

    D. Macroetch test

Q10. The Charpy V-notch test is primarily used to measure 

     which property of a material?

     A. Tensile strength

     B. Hardness

     C. Impact toughness

     D. Fatigue life

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                      ANSWER KEY

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Q1: C | Q2: B | Q3: C | Q4: B | Q5: C

Q6: B | Q7: B | Q8: C | Q9: B | Q10: C

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