For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be
A. 4
B. 6
C. 8
D. 10
Answer: Option A
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3 for d upto 40 mm,
4 for d upto 100 mm,
6 for d upto 180 mm,
So, The right answer is 4.
Shaft dia from 60 to 180 mm the no.of bolt must be 6
Its ig given in PSG design data book