Practice Transmissibility (8.6) - Response to Harmonic Excitation - Earthquake Engineering

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does transmissibility represent?
Show hintHide hint
Think about what happens to force in a dynamic system.
Question 2.
What do you call the zone where T < 1?
Show hintHide hint
Consider a safe zone for structures.
3Question 3.
What is transmitted energy ratio known as?
- Amplification
- Transmissibility
- Isolation
Show hintHide hint
Recall the context of dynamic systems.
4Question 4.
True or False: If r < √2, the system is in the amplification zone.
- True
- False
Show hintHide hint
Think about the definitions of T.
Question 5.
Consider a system with a natural frequency of 25 Hz. If an external force is applied at 40 Hz, calculate its transmissibility and discuss its implications.
Show hintHide hint
First find r, then apply the understanding of the zones.
Question 6.
A force at 15 Hz causes a structure to vibrate at 30 Hz leading to increased damage. Calculate the transmissibility and suggest ways to mitigate these effects.
Show hintHide hint
How can engineers manage vibrations to ensure they stay within isolation?

4 more questions in this section. Enroll free to practise them all.