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MCQs

Total Questions : 605 | Page 57 of 61 pages
Question 561. The vertical reaction for the arch is
  1.    wa²/2l
  2.    wa/2l
  3.    wa/l
  4.    wl/a
 Discuss Question
Answer: Option B. -> wa/2l
Question 562. A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be
  1.    w²a
  2.    wa²
  3.    wa²/27
  4.    wa/27
 Discuss Question
Answer: Option B. -> wa²
Question 563. If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:
  1.    Q = S – F
  2.    Q = S × F
  3.    Q = S + F
  4.    Q = F – S
 Discuss Question
Answer: Option B. -> Q = S × F
Question 564. A square column carries a load P at the centroid of one of the quarters of the square. If a is the side of the main square, the combined bending stress will be
  1.    4p/a²
  2.    2p/a²
  3.    3p/a²
  4.    p/a²
 Discuss Question
Answer: Option C. -> 3p/a²
Question 565. If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of the material, the following relationship holds good
  1.    E = 3K (1 – 2/m)
  2.    E = 2N (1 + 1/m)
  3.    All of these
  4.    (3/2)K (1 – 2/m) = N (1 + 1/m)
 Discuss Question
Answer: Option C. -> All of these
Question 566. For determining the support reactions at A and B of a three hinged arch, points B and Care joined and produced to intersect the load line at D and a line parallel to the load line through A at D’. Distances AD, DD’ and AD’ when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is
  1.    60°
  2.    90°
  3.    30°
  4.    45°
 Discuss Question
Answer: Option B. -> 90°
Question 567. The eccentricity (e) of a hollow circular column, external diameter 25 cm, internal diameter 15 cm for an eccentric load 100 t for non-development of tension, is
  1.    2.75 cm
  2.    3.00 cm
  3.    3.50 cm
  4.    4.25 cm
 Discuss Question
Answer: Option D. -> 4.25 cm
Question 568. The horizontal deflection of a parabolic curved beam of span 10 m and rise 3 m when loaded with a uniformly distributed load l t per horizontal length is (where Ic is the M.I. at the crown, which varies as the slope of the arch).
  1.    200/EIc
  2.    100/EIc
  3.    50/EIc
  4.    150/EIc
 Discuss Question
Answer: Option A. -> 200/EIc
Question 569. At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by
  1.    Maximum tensile stress at the section
  2.    Maximum compressive stress at the section
  3.    Depth of the neutral axis
  4.    Depth of the section
 Discuss Question
Answer: Option C. -> Depth of the neutral axis
Question 570. A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is
  1.    W²L/AE
  2.    WL/AE
  3.    WL/2AE
  4.    W²L/2AE
 Discuss Question
Answer: Option D. -> W²L/2AE

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