WorksheetsTypes of Constrained Motions, Kinematic Chain, Machine, Structur
Total questions: 20
Worksheet time: 10mins
When a link has only one possible direction of motion, it is called:
Incompletely constrained motion
Completely constrained motion
Successfully constrained motion
Random motion
Example of completely constrained motion is:
Circular shaft in a circular hole
Piston sliding in a cylinder
Disc on a flat surface
Pedal of sewing machine
In incompletely constrained motion, the link can move:
Only in one definite direction
In more than one direction without restriction
Only when external forces act
None of the above
Circular shaft in a circular hole represents:
Completely constrained motion
Incompletely constrained motion
Successfully constrained motion
None of the above
Which type of motion occurs when external forces decide the final motion of the link?
Completely constrained
Incompletely constrained
Successfully constrained
None
Example of successfully constrained motion is:
Shaft in bearing
Disc on flat surface
Footstep bearing
Square bar in a square hole
A kinematic chain is formed when:
Links are joined randomly
Links are joined so that motion of one decides motion of others
One link is fixed
It carries loads only
Example of a kinematic chain is:
Roof truss
Bicycle chain mechanism
Beam engine with fixed link
Building frame
Slider-crank chain used in IC engines is a type of:
Kinematic chain
Structure
Truss
None
When one link of a kinematic chain is fixed, it is called:
Structure
Machine
Mechanism
Constrained motion
Example of a mechanism is:
Roof truss
Four-bar chain in pump
Building frame
Lathe machine
Piston–crank mechanism in engines is an example of:
Machine
Structure
Mechanism
Chain drive
A machine is defined as a mechanism which:
Has no relative motion
Transmits or modifies force to do useful work
Carries load without motion
Is fixed permanently
Which of the following is NOT an example of a machine?
IC engine
Lathe machine
Bicycle
Roof truss
Lathe machine performs which type of work?
Converts heat into work
Removes material
Supports loads only
Transmits power only
A structure is a system of links which:
Transmits power
Has no relative motion and carries loads
Converts energy into work
Always has a fixed link
Example of a structure is:
Four-bar chain
Slider-crank chain
Bridge
Lathe machine
Which of the following is NOT a structure?
Roof truss
Frame of building
Beam engine
Bridge
Footstep bearing under load is considered as:
Incompletely constrained
Successfully constrained
Completely constrained
Difference between mechanism and structure is:
Mechanism has motion, structure has no relative motion
Both are same
Structure transmits force, mechanism only supports
Mechanism has no fixed link
