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A device which converts acoustical energy into electrical energy

Q.  
A device which converts acoustical energy into electrical energy


Answer & Explanation

Answer :   Option: D


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More Questions Dynamics of Machinery:

Q.  
In balancing of single-cylinder engine, the rotating unbalance is ______.

A. completely made zero and so also the reciprocating unbalance

B. completely made zero and the reciprocating unbalance is partially reduced

C. partially reduced and the reciprocating unbalance is completely made zero

D. partially reduced and so also the reciprocating unbalance


Answer & Explanation

Q.  
Far field consist of

A. Near field and Free field

B. Near field and Diffused field

C. Near field and Reverberant field

D. Free field and Reverbant field


Answer & Explanation

Q.  
Secondary forces in reciprocating mass on engine frame are

A. of same frequency as of primary forces

B. twice the frequency as of primary forces

C. four times the frequency as of primary forces

D. none of the mentioned


Answer & Explanation

Q.  
For a gearing system, the equivalent system is made consisting of two rotors. How many nodes will this new equivalent system will have?

A. 0

B. 2

C. 1

D. 3


Answer & Explanation
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