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Machine component from which acoustic energy originates is called

Q.  
Machine component from which acoustic energy originates is called


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Answer :   Option: B


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More Questions Dynamics of Machinery:

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Sensor is used in ______ vibration isolation system.

A. passive

B. active

C. both active and passive

D. None of the above


Answer & Explanation

Q.  
Longitudinal vibrations are said to occur when the particles of a body moves

A. perpendicular to its axis

B. parallel to its axis

C. in a circle about its axis

D. none of the mentioned


Answer & Explanation

Q.  
If the unbalanced system is not set right then.

A. Static forces develop

B. Dynamic forces develop

C. Tangential forces develop

D. Radial forces develop


Answer & Explanation

Q.  
The secondary unbalanced force produced by the reciprocating parts of a certain cylinder of a given engine with crank radius r and connecting rod length l can be considered as equal to primary unbalanced force produced by the same weight having

A. an equivalent crank radius r2 /4l and rotating at twice the speed of the engine

B. r2 /4l as equivalent crank radius and rotating at engine speed

C. equivalent crank length of r2 /4l and rotating at engine speed

D. none of the mentioned


Answer & Explanation
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