Theory Of Machine - Study Mode
[#296] Which one of the following can completely balance several masses revolving in different planes on a shaft?
Correct Answer
(B) Two masses in any two planes
[#297] The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where r 1 and r 2 = External and internal radii of collar respectively)
Correct Answer
(D) $$frac{2}{3}mu { ext{W}}left( {frac{{{ ext{r}}_1^3 - { ext{r}}_2^3}}{{{ ext{r}}_1^2 - { ext{r}}_2^2}}}
ight)$$
[#298] The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r 1 and r 2 = External and internal radii of collar respectively)
Correct Answer
(A) $$frac{1}{2}mu { ext{W}}left( {{{ ext{r}}_1} + {{ ext{r}}_2}}
ight)$$
[#299] A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is
Correct Answer
(C) 52.92 N-s/m
[#300] The Hooke's joint consists of:
Correct Answer
(A) Two forks