18) What are the two types of MS pipes?
Answer is:
Seamless pipe / Resistance welded pipe
Related Welding Techniques MCQ with Answers
Answer is:
AC to DC
Explanation:
A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The reverse operation is performed by the inverter. The process is known as rectification, since it "straightens" the direction of current.