2) Select the spindle speed (rpm) for H.S.S drill diameter 24 mm and cutting speed (V) = 30 m/min to drill mild steel.

3) Which one is used to bring the plates closely together after inserting the rivet in the hole?

4) What is the use of bent snips?

5) Name the zinc coated iron?

6) Calculate the weight of steel plate having length of 2000 mm, width of 500 mm, thickness of 4 mm and density of 7.85 g/cm3.