The relation between number of links ($$l$$) and number of joints (j) in a kinematic chain is
A. $$l = \frac{1}{2}\left( {{\text{j}} + 2} \right)$$
B. $$l = \frac{2}{3}\left( {{\text{j}} + 2} \right)$$
C. $$l = \frac{3}{4}\left( {{\text{j}} + 3} \right)$$
D. $$l = {\text{j}} + 4$$
Answer: Option B
This Question Belongs to Mechanical Engineering >> Theory Of Machine
In considering friction of a V-thread, the virtual coefficient of friction (μ1) is given by
A. μ1 = μsinβ
B. μ1 = μcosβ
C. $${\mu _1} = \frac{\mu }{{\sin \beta }}$$
D. $${\mu _1} = \frac{\mu }{{\cos \beta }}$$
The lower pairs are _________ pairs.
A. Self-closed
B. Force-closed
C. Friction closed
D. None of these
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.
A. Sliding
B. Turning
C. Rolling
D. Screw
A kinematic chain is known as a mechanism when
A. None of the links is fixed
B. One of the links is fixed
C. Two of the links are fixed
D. None of these
Join The Discussion