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The unbalanced primary forces in a reciprocating engine are

Q.  
The unbalanced primary forces in a reciprocating engine are


Answer & Explanation

Answer :   Option: A


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More Questions Dynamics of Machinery:

Q.  
Dry friction damping is an example of

A. constant damping

B. variable damping

C. none of these

D. all of these


Answer & Explanation

Q.  
The vibration parallel to the shaft axis are known as ______ vibrations.

A. Transverse

B. Longitudinal

C. Torsional

D. none of these


Answer & Explanation

Q.  
Often an unbalance of forces is produced in rotary or reciprocating machinery due to the ______.

A. Centripetal forces

B. Centrifugal forces

C. Friction forces

D. Inertia forces


Answer & Explanation

Q.  
Find the critical speed of the shaft when natural frequency 12 rad/sec and wavelength of 4 m.

A. 0.764 m/sec

B. 7.64 m/sec

C. 76.4m/sec

D. 764 m/sec


Answer & Explanation
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