CSWIP 3.1 Leading Questions PDF

CSWIP 3.1 Leading questions Qno1. Which of the following group of activities is considered essential to check during welding? a) Amperage, Cleaning dimensions, PWHT, Consumable control and heat input b) Heat input, run out length, polarity, inter-pas...

CSWIP 3.1 Leading questions Qno1. Which of the following group of activities is considered essential to check during welding? a) Amperage, Cleaning dimensions, PWHT, Consumable control and heat input b) Heat input, run out length, polarity, inter-pass temperature and run sequence c) Voltage, cleaning, electrode size, post cleaning and checking welding equipment d) Travel speed, amperage, run out length, electrode size, PWHT Qno1(a). With reference to the answer, which of these activities will have the greatest influence on HICC? a) Dimensions b) Heat input c) Electrode size d) PWHT Qno2. A root radius is used on which of the following joint types? a) Single bevel b) Single J c) Open square edge butt d) Single V Qno2(a). Reference to the previous answer also has the following features? a) Included angle between 60 to 70 degrees b) Bevel angle of between 40 to 50 degrees c) Bevel angle between 5 to 15 degrees d) Bevel angle between 25 to 30 degrees Qno3. What is the difference between actual throat thickness and design throat thickness in fillet weld? a) They are the same thing b) Penetration level c) Excess weld metal and penetration d) Usually about 20% difference Qno3(a). The relationship between design throat thickness and leg length is derived from? a) A convex fillet weld b) A miter fillet weld c) A concave fillet weld d) An equilateral triangle Qno4. In mechanical testing, where would the Charpy impact test be taken from in regards the welding position if it was a multi-positional weld? a) PA b) PC c) PG d) PF Qno4(a). Reference to answer, why are impact test taken from this position? a) The hardness level would be higher b) The UTS would be higher c) Heat input would be higher d) Heat input would be lower Qno5. The HAZ of a V butt weld consist of? a) One distinct affected area b) Two distinct affected area c) Three distinct affected area d) Four distinct affected area Qno5(a). Reference to the previous answer, what type of structure is it? a) A grain growth zone b) A grain growth zone and recrystallized zone c) A grain growth zone, recrystallized zone and partially transformed zone d) A grain growth zone, recrystallized zone and partially transformed zone, tempered zone Qno6. There are four factors that leads to hydrogen cracking, which of the following is an incorrect value from one of these factors? a) 400hv, Temperature < 300, Stress > 0.5 yield stress, Hydrogen level > 15ml per 100 gram of weld metal deposited. Q4: What the factors affecting residual stresses? Ans: Parent Material Properties, Amount of restrain, Joint design, Fit-up, Welding sequence Q5: Essential variables which are affecting mechanical properties? Ans: Welding process, Material type, PWHT Q6: PWHT chart sequence? Ans: Unrestricted heating rate, restrict heating rate, soak time, restrict cooling rate, unrestricted cooling rate. Q7: During rolling plates, what is the appearance of lamination? Ans: Step like appearance due to the solid inclusion in parent material.  ADDITIONAL Qs FROM EXAM The cost of repairing is ………. Times higher than original weld. Ans. 10 times Iron sulphide is present in which cracking Ans. Solidification cracking Lowest heat input process Ans. TIG If medium carbon steel is not preheated before and during welding it goes to which region Ans. Martensite Stabilized grade of austenitic stainless steel which prevent sensitization Ans. 321(niobium) and 347(titanium) stainless steels ISO 2560B4XXX what does the B indicate Ans. Impact value at 27 Joule With reference of previous question what does the 4 indicate Ans. -40C temp. Which preparation has highest distortion Ans. V preparation