Mechanical Engineering - Theory of machines - Discussion

Discussion Forum : Theory of machines - Section 1 (Q.No. 6)
6.
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach
90°
180°
360°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 1 of 2.

Ritesh kumar said:   1 decade ago
Inertia force increases rapidly. Damping and spring force are reduced. So 180° is correct.

Kikani vishal said:   1 decade ago
From frequency response curve. We can say that at high value of w/wn. Phase angle tends to 180°.

Varun said:   10 years ago
Frequency tans to zero.

Sagar said:   9 years ago
@Kikani vishal.

What is ω/ωn?

Sagarpatil said:   9 years ago
Frequency is zero.

Manjeet kumar said:   8 years ago
w/wn is called frequency ratio.

Lok said:   7 years ago
W/wn means?

Pabitra said:   7 years ago
The correct answer is 180° based on the phase angle vs w/wn curve.

Tesfay said:   7 years ago
Here, What is w and wn?

Yusuf said:   7 years ago
@Tesfay.

w is the actual frequency and wn is the natural frequency.


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