Q3) Choose false or true for the correct answer of the following: A-For single degree of freedom torsional system. false true the torsional natural frequency is equal to B-Using Holzer tabulation method for torsional system, in general we may use the following formula to find e₁+1: 0+0=1,2,.. ki C-Natural frequencies of multiple degrees of freedom system are estimated from the roots of the characteristic equation. false true false true D-Mode shape of a vibrating system is always false true considered by taking one of the coordinate amplitudes as a reference. E-Eigen values are used to estimate the mode shapes of a vibrating system, while the Eigen vectors are used to find its natural frequencies. F-For four degrees of freedom system, the frequency polynomial equation has the power of eight. G-To find the No. of nodes regarding the mode shapes of a vibrating system, the following equation must be applied (No. of nodes=No. of mode + 1). false true false true false true (25 mark)