ISRO Mechanical & Aerospace 2009 - Question 59

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A perfect frame has N joints. The number of members should not be less than

  • A. 2N-1
  • B. 2N-2
  • C. 2N-3
  • D. 2N-5

Answer: C. 2N-3

Explanation: For a perfect plane truss, $m = 2j - 3$.

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