Theory Of Machine - Study Mode

[#216] The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in
Correct Answer

(A) Transverse vibrations

[#217] The equation of motion for a single degree of freedom system with viscous damping is $$4frac{{{{ ext{d}}^2}{ ext{x}}}}{{{ ext{d}}{{ ext{t}}^2}}} + 9frac{{{ ext{dx}}}}{{{ ext{dt}}}} + 16{ ext{x}} = 0.$$ xa0 xa0 The damping ratio of the system is
Correct Answer

(C) $$frac{9}{{16}}$$

[#218] Crowning on pulleys helps
Correct Answer

(C) For automatic adjustment of belt position so that belt runs centrally

[#219] A pulley and belt in a belt drive form a
Correct Answer

(C) Rolling pair

[#220] Elements of pairs held together mechanically is known as
Correct Answer

(A) Closed pair