In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

In a flange coupling, the keys are staggered at __________ along the c

1.	In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.
A.	90
B.	135
C.	160
D.	180
Answer» B. 135