Question 25 (1 point)
Progressive dies are preferred over compound dies due to:
1) extremely high production rates
2) simpler design and lower maintenance costs
3) simplicity of the parts such as washers
4) higher speed of mechanical presses
5) complexity of injection molded parts
Question 26 (1 point)
What is the difference between AA 6061-T4 and AA 6061-T6?
1) T6 is naturally aged, T4 is furnace aged then work-hardened
2) T6 is strain-hardened
3) T4 is hardened by cold working
4) both are stress relieved by thermal input
5) none of the above
Question 27 (1 point)
The threaded base (socket) of a light bulb can be produced cost-effectively by:
1) turning on CNC lathes
2) laser beam cutting
3) wire EDM
4) shear spinning
5) none is correct