When a rectangular bar of length l, breadth b and thickness t is subjected to an axial pull of P, then linear strain (`epsilon`) is given by (where E = Modulus of elasticity)
Answer : Option A
A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is`(5Wl^5)/(384EI)` and lies at the centre of the beam.
The horizontal thrust offered by the retaining wall on the retained material is (where w = Specific weight of the retained material, h = height of retaining wall, and (`phi`) = Angle of repose of the retained earth)
Answer : Option B
The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, l = Length of weld, and `sigma_t`= Allowable tensile stress for weld metal)
Answer : Option C