Which of the following is false statement in respect of differences between machine and structure___________________?

A. Machines transmit mechanical work, whereas structures transmit forces
B. In machines, relative motion exists be-tween its members, whereas same does hot exist in case of structures
C. Machines modify movement and work, whereas structures modify forces
D. Efficiency of machines as well as structures is below 100%

Typewriter constitutes__________________?

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

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

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

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

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

A panto graph is a mechanism with___________________?

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

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

The approximate straight line mechanism is a____________________?

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

Peaucellier mechanism has__________________?

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

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