Theory Of Machine - Study Mode
[#141] In vibration isolation system, if $$frac{omega }{{omega { ext{n}}}} > 1,$$ xa0then the phase difference between the transmitted force and the disturbing force is
Correct Answer
(C) 180°
[#142] For fluctuating loads, well suited bearing is
Correct Answer
(C) Needle roller bearing
[#143] The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.
Correct Answer
(A) Same
[#144] The maximum or minimum value of the swaying couple is
Correct Answer
(C) $$ pm frac{{ ext{a}}}{{sqrt 2 }}left( {1 - { ext{c}}}
ight){ ext{m}}{omega ^2}{ ext{r}}$$
[#145] Creep in belt drive is due to
Correct Answer
(D) Uneven extensions and contractions due to varying tension