Learn Everything at One Place !

Find the critical speed when trailer is travelling over a raod with profile...

Q.  
Find the critical speed when trailer is travelling over a raod with profile approximated by a sine wave of amplitude 0.08 m and wavelength 14 m. Take natural frequency is 9.9 rad/sec


Answer & Explanation

Answer :   Option: C


Discuss below! No Explanation Available for This Question.

Similar Questions

Start Discussion :




Comments :
More Questions Dynamics of Machinery:

Q.  
To protect the characteristics of vibratory system, which type of measuring instrument is used

A. Active

B. Passive

C. Contact type

D. Non contact type


Answer & Explanation

Q.  
For static balancing of the enegine, which of the following condition is necessary?

A. Force couple must be close

B. Couple polygon must be close

C. Both (A) and (B)

D. Force couple must be open


Answer & Explanation

Q.  
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because the

A. unbalance couples are caused only at higher speeds

B. unbalance forces are no dangenrous at higher speeds

C. effect of unbalances are proportional to the square of the speed

D. effect of unbalances are directly proportional to the speed


Answer & Explanation

Q.  
When two rotors rotate in one direction and middle one rotates in opposite direction, then torsional vibration occurs with

A. Four nodes

B. Three nodes

C. Two Nodes

D. Single node


Answer & Explanation
(Click here) Practice More Questions/MCQ on Dynamics of Machinery