Practice Normal Modes and Natural Frequencies - 19.7 | 19. Modelling – Membrane, Two-Dimensional Wave Equation | Mathematics (Civil Engineering -1)
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What do the indices (n,m) represent in normal modes?

💡 Hint: Think about the indexes associated with vibration.

Question 2

Easy

What is the equation for natural frequency?

💡 Hint: The form indicates it relates to the dimensions of the membrane.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the fundamental mode represented by?

  • (0,0)
  • (1,1)
  • (2,2)

💡 Hint: Think of the lowest frequency mode.

Question 2

Natural frequencies are associated with which concept?

  • True
  • False

💡 Hint: Recall the definition of natural frequencies.

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Challenge Problems

Push your limits with challenges.

Question 1

A square membrane has dimensions of 2m x 2m. Calculate the natural frequency for the fundamental mode.

💡 Hint: Think about the relationship between wave speed and tension.

Question 2

For a given rectangular membrane (4m x 2m), if 'c' is known to be 3 m/s, calculate the frequencies for modes (1,2) and (2,1).

💡 Hint: Substitute into the equation carefully; ensure dimensions are consistent.

Challenge and get performance evaluation