Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 9 (Q.No. 3)
3.
The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to
0° and 90°
90° and 180°
135° and 315°
270° and 360°
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 1 of 2.

Abbas said:   2 years ago
Yes, agree, c is the right answer.

Vinay BEL said:   4 years ago
135° and 315°.

Naveen Shahrukh said:   4 years ago
tractive force is maximum or minimum when the angle of inclination of the crank with the line of stroke (Î¸) is equal to 135° and 315°.

At these angles only we get Maximum of 1.414 and Minimum -1.414 while substituting angles this formula.
F = (1-c)mrw^2(cosθ -sinθ).

Chirag.tandel said:   6 years ago
Which option is right? Give me an explanation.

Deepak Sharma said:   6 years ago
Maximum at 135 and minimum at 315.

Obak said:   6 years ago

Prakash said:   7 years ago

Kajal Sharma said:   7 years ago
I think C is right.

Xiyaz said:   7 years ago
I think the correct answer is C.

Ravi saini said:   7 years ago
But at 135 and 315 tractive force max at both value not min at 315.