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Q1. Carbon equivalent values help determine?

a. Risk of weld decay
b. Risk of solidification cracking
c. Risk of lamellar tearing
d. Risk of hydrogen cracking

Q2- A code of practice is?

a. Related to welder approval
b. A standard
c. A set of rules to manufacture a product
d. All of the above

Q3- If a 2 inch thick carbon manganese steel with good toughness is to be welded using MMA, which electrode coating is preferred?

a. Basic
b. Rutile
c. Cellulosic
d. Any one is OK

Q4- First baking and then storing hot is required for which type of electrodes?

a. Basic
b. Rutile
c. Cellulosic
d. All type of electrodes

Q5- Plant repair of weld is generally more difficult than shop repair due to-

a. Material contamination in-service
b. Position of weld repair
c. Restricted access to weld repair
d. Any of the above

Q6- IN SAW the use of excessive high voltage will result in

a. Insufficient flux melting
b. Spatter
c. Slag removal difficulty
d. Excessive flux melting

Q7- The presence of iron sulphide in the weld metal is most likely to produce which of the following defects on contraction:

a. Solidification cracks
b. Hydrogen cracks
c. Stress corrosion cracks
d. Intergranular corrosion

Q8- The process of tempering is often carried out to regain toughness after which of the following processes:

a. Annealing
b. Normalizing
c. Stress Relieving
d. Hardening

Q9- Porosity is caused by?

a. Entrapped gas in the solidifying weld
b. Entrapped slag in the solidifying weld
c. Entrapped metallic inclusions in the solidifying weld
d. None of the above

Q10- Hydrogen cracking in the weld metal is likely when welding

a. Carbon manganese steels
b. Stainless Steel
c. Micro Alloyed Steels (HSLA)
d. Low Carbon Steel