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Questions and Answers
Which one of the following statements accurately describes the hammer blow in a reciprocating system?
Which one of the following statements accurately describes the hammer blow in a reciprocating system?
- It varies inversely with the square of the speed
- It varies as the square root of the speed
- It is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses
- It is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses (correct)
In an underdamped vibrating system, what happens to the amplitude of vibration over time?
In an underdamped vibrating system, what happens to the amplitude of vibration over time?
- It decreases linearly with time
- It increases linearly with time
- It decreases exponentially with time (correct)
- It increases exponentially with time
What is the mobility of a statically indeterminate structure?
What is the mobility of a statically indeterminate structure?
- 0
- 1
- Less than or equal to -1
- Greater than or equal to 2 (correct)
What happens when two non-collinear parallel equal forces act in opposite directions?
What happens when two non-collinear parallel equal forces act in opposite directions?
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What term is used to describe the range of tightness or looseness resulting from the allowances and tolerances in mating parts?
What term is used to describe the range of tightness or looseness resulting from the allowances and tolerances in mating parts?
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