Joint A indicated in the figure can be considered as:

a$.$ Rotational joint

$($b$.)$ Pin in slot joint

c$.$ Screw joint

d$.$ Sliding joint

Inversion of mechanisms is:

$.$ Making a sliding joint a rotational joint

b$.$ Replacing a moving link with a fixed link

c$.$ Fixation alteration of links

d$.$ None of the above

Cam and follower contact can be considered as

a$.$ Full joint

b$.$ Rolling joint

c$.$ Sliding joint

d$.$ Half joint

Second order revolute joint is the joint which connect at one point:

a$.)$ Two links

b$.$ Three links

c$.$ Four links

d$.$ None of the above

In a Grashof fourbar mechanism,

a$.$ One link should be longer than the other

b$.$ One link should be capable of making half revolution

c$.$ The sum of the lengths of shortest and the longest links should be more than the length

of the other two links.

d$.$ The sum of the lengths of shortest and the longest links should be less or equal to the

length of the ofher two links.