A. straight line
B. circle
C. ellipse
D. parabola
E. hyperbola
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 motion
E. none of the above
A. natural frequency of vibration
B. position of balancing weights
C. moment of inertia
D. centripetal acceleration’
E. angular acceleration of a body
A. sliding and turning pairs
B. sliding and rotary pairs
C. turning and rotary pairs
D. sliding pairs only
E. turning pairs only
A. for changing the direction of motion of the belt
B. for applying tension
C. for increasing -velocity ratio
D. all of the above
E. none of the above
A. bevel gear
B. universal joint
C. Hooke’s joint
D. Knuckle joint
E. Oldham’s coupling
A. a straight line
B. a circle
C. involute
D. cycloidal
E. helix