Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

Efficiency of machines as well as structures is below 100 %
Machines modify movement and work, whereas structures modify forces
In machines, relative motion exists between its members, whereas same does not exist in case of structures
Machines transmit mechanical work, whereas structures transmit forces

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Theory of Machine
Which of the following statement is correct as regard to the difference between a machine and a structure?

A machine transforms the available energy into some useful work, whereas in a structure no energy is transformed into useful work
All of these
The links of a machine may transmit both power and motion, whereas the members of a structure transmit forces only
The parts of a machine move relative to one another, whereas the members of a structure do not move relative to one another

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