# Civil Engineering - GATE Exam Questions - Discussion

### Discussion :: GATE Exam Questions - Section 4 (Q.No.33)

33.

The dimensions for the flexural rigidity of a beam element in mass (M), length (L) and time (T) is given by

 [A]. MT-2 [B]. ML3T-2 [C]. ML-1T-2 [D]. M-1T2

Explanation:

No answer description available for this question.

 Paras said: (Jul 14, 2016) It's option B. Flexural rigidity is EI having Nm^2 units.

 Snehal Wankhede said: (Sep 2, 2016) Option B. Flexural rigidity = EI = Nmm2 = ML3T-2.

 Sadashiva said: (Jan 14, 2017) EI = ML^-1T^-2xL^4.

 Balia Ucp said: (Mar 14, 2017) Here, EI = [ML^3T ^-2].

 Mahadev said: (Mar 20, 2017) @Snehal and @Balia is correct. E=N/m ^2, I=m^4. N=mass * gravity = Kg * m/sec. = ML^3/T.

 Poobathy said: (Jun 29, 2017) Options A correct.

 Roy said: (Sep 27, 2017) B is the right answer.

 Phani said: (Mar 10, 2018) (Kg-m/s^2)*1/m = kg/s^2 = MT^-2.

 S K Jha said: (Sep 10, 2020) EI = Nm2 = MLT-2 x L2 = ML3T-2.

 Sahil Chavda said: (Dec 12, 2020) In a beam, the flexural rigidity (EI) varies along the length as a function of x as shown in the equation: Where E is the young's modulus (in Pasual, Pa), I is the second moment of area (in m4). Y is the traverse displacement of the beam x and M(x) is the bending moment at x. The SI unit of flexural rigidity is thus Pa. m4 or Nm4. So, the Dimension is ML3T-2

 Khan said: (Jul 16, 2021) E = N/m^2 & I= m^4. EI = N-m^2, N = Kg-m/s^2, EI = (Kg-m/s^2)*(m^2), EI = Kg-m^3/s^2= ML^3S^-2.