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MCQs

Total Questions : 605 | Page 58 of 61 pages
Question 571. In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is
  1.    L/3
  2.    L/2
  3.    L/4
  4.    L/5
 Discuss Question
Answer: Option A. -> L/3
Question 572. In case of a simply supported I-section beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, is
  1.    L/4
  2.    L/5
  3.    L/3
  4.    L/2
 Discuss Question
Answer: Option B. -> L/5
Question 573. Stress may be expressed in Newtons
  1.    Per metre square (N/m2)
  2.    Per centimetre square (N/cm²)
  3.    None of these
  4.    Per millimetre square (N/mm²)
 Discuss Question
Answer: Option D. -> Per millimetre square (N/mm²)
Question 574. The locus of the moment of inertia about inclined axes to the principal axis, is
  1.    Parabola
  2.    Ellipse
  3.    Circle
  4.    Straight line
 Discuss Question
Answer: Option B. -> Ellipse
Question 575. The point of contraflexure is the point where
  1.    M. is minimum
  2.    S.F. is zero
  3.    M. changes sign
  4.    M. is maximum
 Discuss Question
Answer: Option C. -> M. changes sign
Question 576. 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
  1.    0.0025
  2.    0.003
  3.    0.002
  4.    0.001
 Discuss Question
Answer: Option A. -> 0.0025
Question 577. A steel plate d × b is sandwiched rigidly between two timber joists each D × B/2 in section. The steel will be (where Young’s modulus of steel is m times that of the timber).
  1.    BD² + mbd²)/4D]
  2.    BD² + mbd³)/4D]
  3.    BD² + mbd²)/6D]
  4.    BD³ + mbd³)/6D]
 Discuss Question
Answer: Option D. -> BD³ + mbd³)/6D]
Question 578. A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is
  1.    [W (1 + f/ G)]/ A
  2.    (1 – g/f)/A
  3.    [W (2 + f/G)]/A
  4.    [W (2 + g/f)]/A
 Discuss Question
Answer: Option A. -> [W (1 + f/ G)]/ A
Question 579. The ratio of shear stress and shear strain of an elastic material, is
  1.    Modulus of Rigidity
  2.    Shear Modulus
  3.    Both A. and B.
  4.    Modulus of Elasticity
 Discuss Question
Answer: Option C. -> Both A. and B.
Question 580. An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is
  1.    Wa/h
  2.    2W/ha
  3.    2h/Wa
  4.    Wa/2h
 Discuss Question
Answer: Option D. -> Wa/2h

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