ISRO Electrical Engineering (EE) 2018 - Question 77

All ISRO Electrical Engineering (EE) papers | ISRO Electrical Engineering (EE) 2018

Matrix A has following eigen values λ1 = +3j, λ2 = +5j, λ3 = +1j, then the matrix is

  • A. Symmetric matrix
  • B. Skew Hermitian matrix
  • C. Orthogonal matrix
  • D. None of the above

Answer: B. Skew Hermitian matrix

Explanation: All eigenvalues λ1 = 3j, λ2 = 5j, λ3 = 1j are purely imaginary numbers, which is the defining characteristic of a skew-Hermitian matrix.

| | All questions of ISRO Electrical Engineering (EE) 2018