Question

b) State whether the following statements are true (T) or false (F): (6x1 - 6 marks) 15. For power screws, the Acme thread is not as efficient as the square thread 16. For a screw, the lead I, is the distance the nut moves parallel to the screw axis when the nut is given one turn. 17. For a screw with a single thread, the lead is the same as the pitch. ) 18. Brazing can join dissimilar metals such as aluminum, silver, copper, gold, and nickel. 19. In both soldering and brazing, work piece is not melted. 20. In welding, work pieces are melted and filler material is added to molten materials that cool to form strong joints.

Answer 1