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4 cards from this section. Quick, good the night before a test.
What does the phase angle represent?
Think about the relationship between input and output.
What is the frequency ratio?
Recall how frequency is compared in systems.
What happens to the phase angle at resonance?
Consider the implications of matching frequencies.
True or False: Increasing damping decreases the phase lag in a harmonic system.
Damping plays a key role in phase relationships.
A bridge experiences harmonic loading at a frequency ratio of 1.1. Calculate the likely phase angle. Discuss the implications of this phase shift.
Can you recall the phase angles corresponding to different frequency ratios?
Design a dynamic absorber for a system with known natural frequency of 2 Hz intending to reduce vibrations at 2.2 Hz. Explain your design considerations.
Think about phase shifts and how they apply to countervailing harmonics.
5 more questions in this section. Enroll free to practise them all.
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