70. The table gives details of an assembly line.
Work station I II III IV V VI
Total task time at the workstation (in minutes) 7 9 7 10 9 6
What is the line efficiency of the assembly line?
(A) 70%
(B) 75%
(C) 80%
(D) 85%
Common Data Questions
Common Data for Questions 71, 72, 73:
In an orthogonal machining operation:
Uncut thickness = 0.5 mm Cutting speed = 20 m/min
Width of cut = 5 mm Chip thickness = 0.7 mm
Thrust force = 200 N Cutting force = 1200 N
Rake angle = 15°
Assume Merchant’s theory.
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