For a kinematic chain to be considered as mechanism___________________?

A. Two links should be fixed
B. One link should be fixed
C. None of the links should be fixed
D. There is no such criterion

A chain comprises of 5 links having 5 joints. Is it kinematic chain ?

A. Yes
B. No
C. It is a marginal case
D. Data are insufficient to determine it

Peaucellier mechanism has__________________?

A. Eight links
B. Six links
C. Four links
D. Twelve links

The approximate straight line mechanism is a____________________?

A. Four bar linkage
B. 6 bar linkage
C. 8 bar linkage
D. 3 bar linkage

If the opposite links of a four bar linkage are equal, the links will always form a_________________?

A. Triangle
B. Rectangle
C. Parallelogram
D. Pentagon

A panto graph is a mechanism with___________________?

A. Lower pairs
B. Higher pairs
C. Rolling pairs
D. Turning pairs

Lower pairs are those which have___________________?

A. Point or line contact between the two elements when in motion
B. Surface contact between the two elements when in motion
C. Elements of pairs not -held together mechanically
D. Two elements that permit relative motion

Kinematic pairs are those which have__________________?

A. Point or line contact between the two elements when in motion
B. Surface contact between the two ele-ments when in motion
C. Elements of pairs not held together mechanically
D. Two elements that permit relative mo-tion

A point on a link connecting double slider crank chain traces a____________________?

A. straight line
B. circle
C. parabola
D. hyperbola

Typewriter constitutes__________________?

A. Machine
B. Structure
C. Mechanism
D. Inversion