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1) Co-efficient of wind resistance of a circular surface, is________________? a. 1/2 b. 1/3 c. 2/3 d. 3/2
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2) 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
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3) 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
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4) 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
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5) 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
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6) 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
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7) 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
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8) 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
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9) 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
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10) The ratio of maximum and average shear stresses on a rectangular section, is________________? a. 1 b. 1.25 c. 1.5 d. 2.5
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11) At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by_________________? a. Depth of the section b. Depth of the neutral axis c. Maximum tensile stress at the section d. Maximum compressive stress at the section
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12) The maximum bending moment for a simply supported beam with a uniformly distributed load w/unit length, is_________________? a. WI/2 b. WI²/4 c. WI²/8 d. WI²/12
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13) The force in AC of the truss shown in the given figure, is_________________? a. 5t tension b. 4t tension c. 4t compression d. 5t compression
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14) The maximum B.M. due to an isolated load in a three hinged parabolic arch, (span l and rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance_______________? a. l/4 b. h/4 c. l/2√3 d. l/3√2
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15) For calculating the permissible stress 0 y /[(1 + a(l/r)²] is the empirical formula, known as__________________? a. Straight line formula b. Parabolic formula c. Perry’s formula d. Rankine’s formula
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16) For beams breadth is constant__________________? a. Depth d M b. Depth d 3 c. Depth d d. Depth d 1/M
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17) A short column (30 cm × 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be_________________? a. 2/3 b. 3/2 c. 8/5 d. 5/8
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18) To determine the force in BD of the truss shown in the given figure a section is passed through BD, CD and CE, and the moments are taken about________________? a. A joint b. B joint c. C joint d. D joint
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19) A simply supported beam which carries a uniformly distributed load has two equal overhangs. To have maximum B.M. produced in the beam least possible, the ratio of the length of the overhang to the total length of the beam, is_________________? a. 0.207 b. 0.307 c. 0.407 d. 0.508
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20) 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
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