A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism is
A. Kinematically sound
B. Not sound
C. Soundness would depend upon which link is kept fixed
D. Data is not sufficient to determine same
Answer: Option A
This Question Belongs to Mechanical Engineering >> Theory Of Machine
Join The Discussion
Comments ( 2 )
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
1: 2J=3L-4
L= no.of link
J= no.of binary joint
2: L= 2P-4
L= no.of link
P=no.of pair
LHS=RHS, Kinematics chain.( Constraint chain)
LHSRHS, LOCKED CHAIN, FRAME, STRUCTURE.
1: 2J=3L-4
L= no.of link
J= no.of binary joint
2: L= 2P-4
L= no.of link
P=no.of pair
LHS=RHS, Kinematics chain.( Constraint chain)
LHSRHS, LOCKED CHAIN, FRAME, STRUCTURE.