The ratio of maximum and average shear stresses on a rectangular section, is________________?
(A) 1
(B) 1.25
(C) 1.5
(D) 2.5
If a concrete column 200 × 200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 and Es is 15 Ec________________?
(A) 264 MN
(B) 274 MN
(C) 284 MN
(D) 294 MN
A material is said to be perfectly elastic if__________________?
(A) It regains its original shape on removal of the load
(B) It regains its original shape partially on removal of the load
(C) It does not regain its original shape at all
(D) None of these
If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following_______________?
(A) Q = S + F
(B) Q = S – F
(C) Q = F – S
(D) Q = S × F
A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm². If the slope at the ends is 0.005 radian and the value of E = 0.2 × 106 N/mm2, the depth of the joist, is________________?
(A) 200 mm
(B) 250 mm
(C) 300 mm
(D) 400 mm
In case of principal axes of a section________________?
(A) Sum of moment of inertia is zero
(B) Difference of moment inertia is zero
(C) Product of moment of inertia is zero
(D) None of these
The area of the core of a column of cross sectional area A, is_______________?
(A) (1/3) A
(B) (1/6) A
(C) (1/12) A
(D) (1/18) A
The force in AD of the truss shown in given figure, is________________?
(A) 4.0t compression
(B) 3.0t compression
(C) 0.5t compression
(D) 0.5t tension
static equations i.e. H V M = 0, to a determinate structure, we may By applying the determine_________________?
(A) Supporting reactions only
(B) Shear forces only
(C) Bending moments only
(D) All the above
If a solid shaft (diameter 20 cm, length 400 cm, N = 0.8 × 105 N/mm2) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm 2, the angle of twist in radians, is_________________?
(A) 0.001
(B) 0.002
(C) 0.0025
(D) 0.003