Question $1($include in text citation and reference page at the end$)$

a$)$ Define the term $$electrode$\text{'}$ and mention its major classifications. $[2]$

b$)$ List the any two types of electrodes. $[2]$

c$)$ Briefly explain the purpose of coating on arc welding electrode. $[2]$

d$)$ Compare and contrast between shielded metal arc welding and gas welding. $[10]$

e$)$ State and explain two limitations of MMAW. $[2]$

f$)$ Briefly explain the applications of TIG welding. $[7]$