CWI Part A: 기본 모의고사 제5탄 > 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 & Power Sources

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Q1. Which of the following power source characteristics 

    is typically used for the FCAW and GMAW processes?

    A. Constant Current (CC)

    B. Constant Voltage (CV)

    C. Variable Current (VC)

    D. Alternating Current (AC) only

Q2. In the GTAW process, which gas is most commonly 

    used for shielding to produce a stable arc?

    A. Carbon Dioxide (CO2)

    B. Argon

    C. Oxygen

    D. Nitrogen

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Section 2. Non-Destructive Testing (NDT)

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Q3. Liquid Penetrant Testing (PT) relies on which 

    physical principle to detect discontinuities?

    A. Magnetism

    B. Capillary action

    C. Pulse-echo reflection

    D. Differential absorption

Q4. Which NDT method is most limited by the surface 

    roughness and grain size of the material?

    A. VT (Visual Testing)

    B. RT (Radiographic Testing)

    C. UT (Ultrasonic Testing)

    D. MT (Magnetic Particle Testing)

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Section 3. Discontinuities & Metallurgy

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Q5. Which of the following is an example of a 

    "Planar" discontinuity?

    A. Porosity

    B. Slag inclusion

    C. Incomplete fusion

    D. Underfill

Q6. Rapid cooling of high-carbon steel during welding 

    is most likely to result in the formation of:

    A. Pearlite

    B. Austenite

    C. Martensite

    D. Ferrite

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Section 4. Welding Symbols & Terminology

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Q7. In a welding symbol, information placed in the 

    "Tail" typically refers to:

    A. Welding process or specification

    B. Length of the weld

    C. Root opening size

    |D. The side to be welded

Q8. The "Actual Throat" of a fillet weld is the 

    shortest distance from the weld root to the:

    A. Weld toe

    B. Weld face

    C. Theoretical throat

    D. Leg length

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Section 5. Safety & Quality Control

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Q9. What is the minimum recommended filter shade 

    number for SMAW with a current of 100 Amps?

    A. Shade 5

    B. Shade 8

    C. Shade 10

    D. Shade 14

Q10. A document that provides the actual test results 

     used to qualify a welding procedure is called:

     A. WPS

     B. WPQ

     C. PQR

     D. MTR

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                    ANSWER KEY

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

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

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