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Where can the pass-by noise testing done?

Q.  
Where can the pass-by noise testing done?


Answer & Explanation

Answer :   Option: C


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More Questions Dynamics of Machinery:

Q.  
Which of the following is not the example of two degree of freedom system

A. Double pendulum

B. Two masses fixed on stretched string

C. Cantilever beam

D. Torsional system


Answer & Explanation

Q.  
Two springs have spring stiffness of 1500 N/m each if they are connected in series equivalent spring stiffness is.

A. 750 N/m

B. 7500 N/m

C. 7800 N/m

D. 8000 N/m


Answer & Explanation

Q.  
When a single DOF system is excited by a harmonic force, the phase of steady state displacement near resonance is

A. 90 degree behind the excitation force

B. 90 degree ahead of the excitation force

C. In phase with the excitation force

D. Out of phase with the excitation force


Answer & Explanation

Q.  
An example of a source of vibration that cannot be altered is:

A. atmospheric turbulance

B. hammer blow

C. tire stiffness of an automobile.

D. None of the above


Answer & Explanation
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