MMET 313 Exam 1 with Complete Solutions

MMET 313 Exam 1 with Complete
Solutions
How to store low hydrogen electrodes Correct Ans-Store in oven/ furnace




Hydrogen cracking Correct Ans-In form of moisture, populates at high stress areas, caused by
low heat input and fast cooling rate



Sources of Hydrogen Correct Ans-Coating on electrode

Flux in core of FCAW electrode

Oxides on metal

Lubricants

Contamination on plate or filler metal

Moisture in air



Welding symbol above reference line Correct Ans-Other side




Welding symbol below reference line Correct Ans-Arrow side




Plate Weld 1G Correct Ans-Flat groove




Plate Weld 2G Correct Ans-Horizontal Groove

, Plate weld 3G Correct Ans-Vertical Groove




Plate weld 4G Correct Ans-Overhead Groove




Pipe weld 1G Correct Ans-Flat groove, pipe




Pipe weld 2G Correct Ans-Horizontal groove, pipe




Pipe weld 5G Correct Ans-groove, multiple position, pipe horizontal and not rotated




Pipe weld 6G/6GR Correct Ans-groove, Multiple position, Pipe axis 45 degrees, not rotated.




Plate weld 1F Correct Ans-Flat fillet




Plate weld 2F Correct Ans-Horizontal fillet




Plate weld 3F Correct Ans-Vertical fillet




Plate weld 4F Correct Ans-Overhead fillet