+1 vote
in Machine Dynamics by (34.3k points)
If the maximum value occurs at 45 degrees then at which of the following angles in degrees will the swaying couple attains its maximum value again?

(a) 135

(b) 45

(c) 225

(d) 60

The question was posed to me during an online interview.

The above asked question is from Swaying Couple topic in section Balancing of Reciprocating Masses of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Correct option is (c) 225

To explain I would say: The swaying couple is maximum or minimum when the relation (cos θ + sin θ) is maximum or minimum. This results in a relation tan θ=1

hence theta = 45 degrees or 225 degrees.

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