Theory of Machine
When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

Oscillate with decreasing amplitude
Return to equilibrium position without oscillation
Oscillate with increasing time period
Oscillate with constant amplitude

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

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
Efficiency of machines as well as structures is below 100 %
Machines transmit mechanical work, whereas structures transmit forces

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