The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke ( ) is equal to

The swaying couple is maximum or minimum when the angle of inclination

1.	The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke ( ) is equal to
A.	90 and 180
B.	45 and 225
C.	180 and 270
D.	270 and 360
Answer» C. 180 and 270