Question:
What is a machine ? Differentiate between a machine and a structure.
Answer:
Sl. No
Machine
Structure
1
All parts / links have relative motion
No relative motion between the links
2
It transforms the available energy into some useful work
No energy transformations
3
The kinematic link of a machine may transmit both power and motion
The member of the structure transmit forces only
4
Examples: I.C. Engine, Machine tools, steam engine, type writer, etc.
Example: Truss of roof, frame of machine, truss of bridge
5
Studied under 'Dynamics'
Studied under 'Statics'