Quiz Guides MT 121 – Grinding Machine and Operation Quiz # 1 - Introduction to Grinding and Grinding Safety Quiz # 2 - Grinding Wheels Quiz # 3 - Kinds of Grinding Machines Quiz # 4 - Types of Grinding Operations Quiz Guides MT 122 – Sheet Metal and Iron Work Fabrication Quiz # 1 - Arc Welding Equipment Quiz # 2 - Shielded Metal Arc Welding Quiz # 3 - Oxy-Acetylene Welding Quiz # 4 - Bench Work