Which of the following has sliding motion________________?
A. crank
B. connecting rod
C. crank
D. cross-head
E. cross head guide
Theory of Machines
Automobile steering gear is an example of____________________?
Automobile steering gear is an example of____________________?
A. higher pair
B. sliding pair
C. turning pair
D. rotary pair
E. lower pair
Kinematic pairs are those which have two elements that ______________?
Kinematic pairs are those which have two elements that ______________?
A. have line contact
B. have surface contact
C. permit relative motion
D. are held together
E. have dynamic forces
If some links are connected such that motion between them can take place in more than one direction, it is called_______________?
If some links are connected such that motion between them can take place in more than one direction, it is called_______________?
A. incompletely constrained motion
B. partially constrained motion
C. completely constrained motion
D. successfully constrained motion
E. none of the above
Cross head and guides form a _________________?
Cross head and guides form a _________________?
A. lower pair
B. higher pair
C. turning pair
D. rolling pair
E. sliding pair
The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be________________?
The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be________________?
A. 0, and more than co2r
B. 0, and less than coV
C. 0, 0
D. cor, 0
E. none of the above
The purpose of a link is to________________?
The purpose of a link is to________________?
A. transmit motion
B. guide other links
C. act as a support
D. all of the above
E. none of the above
Rectilinear motion of piston is converted into rotary by_______________?
Rectilinear motion of piston is converted into rotary by_______________?
A. cross head
B. slider crank
C. connecting rod
D. gudgeon
E. four bar chain mechanism
Any point on a link connecting double slider crank chain will trace a ________________?
Any point on a link connecting double slider crank chain will trace a ________________?
A. straight line
B. circle
C. ellipse
D. parabola
E. hyperbola
Pulley in a belt drive acts as_______________?
Pulley in a belt drive acts as_______________?
A. cylindrical pair
B. turning pair
C. rolling pair
D. sliding pair
E. surface pair