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_________________?

Related Mcqs:

1. 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
   D. l

2. 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)___________________?

   A. 50/EIc
   B. 100/EIc
   C. 150/EIc
   D. 200/EIc

3. If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span__________________?

   A. Horizontal thrust is wl2/8h
   B. S.F. will be zero throughout
   C. B.M. will be zero throughout
   D. All the above

4. 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___________________?

   A. 30°
   B. 45°
   C. 60°
   D. 90°

5. A two hinged parabolic arch of span l and rise h carries a load varying from zero at the left end to________________?

   A. /4h thrust is
   B. /8h
   C. /12h
   D. /16h

6. A three hinged arch is generally hinged at its supports and__________________?

   A. At one quarter span
   B. At the crown
   C. Anywhere in the rib
   D. None of these

7. The locus of reaction of a two hinged semi-circular arch, is_________________?

   A. Straight line
   B. Parabola
   C. Circle
   D. Hyperbola

8. The maximum deflection of a simply supported beam of span L, carrying an isolated load at the centre of the span; flexural rigidity being EI, is______________?

   A. WL3/3EL
   B. WL3/8EL
   C. WL3/24EL
   D. WL3/48EL

9. The horizontal thrust on the ends of a two hinged semicircular arch of radius carrying_________________?

   A. A uniforml 4/3
   B. end, is
   C. All the above
   D. non of these

10. A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is________________?

    A. L/d
    B. L/2d
    C. (L/2d)²
    D. (L/3d)²