Top 150+ Solved Structural Mechanics MCQ Questions Answer
Q. A beam is a structural member which is subjected to
a. Axial tension or compression
b. Transverse loads and couples
c. Twisting moment
d. No load, but its axis should be horizontal and x-section rectangular or circular
Q. Which of the following are statically determinate beams?
a. Only simply supported beams
b. Cantilever, overhanging and simply supported
c. Fixed beams
d. Continuous beams
Q. A cantilever is a beam whose
a. Both ends are supported either on rollers or hinges
b. One end is fixed and other end is free
c. Both ends are fixed
d. Whose both or one of the end has overhang
Q. In a cantilever carrying a uniformly varying load starting from zero at the free end, the shear force diagram is
a. A horizontal line parallel to x-axis
b. A line inclined to x-axis
c. Follows a parabolic law
d. Follows a cubic law
Q. In a cantilever carrying a uniformly varying load starting from zero at the free end, the Bending moment diagram is
a. A horizontal line parallel to x-axis
b. A line inclined to x-axis
c. Follows a parabolic law
d. Follows a cubic law
Q. In a simply supported beam, bending moment at the end
a. Is always zero if it does not carry couple at the end
b. Is zero, if the beam has uniformly distributed load only
c. Is zero if the beam has concentrated loads only
d. May or may not be zero
Q. For any part of the beam, between two concentrated load Shear force diagram is a
a. Horizontal straight line
b. Vertical straight line
c. Line inclined to x-axis
d. Parabola
Q. For any part of a beam between two concentrated load, Bending momentdiagram is a
a. Horizontal straight line
b. Vertical straight line
c. Line inclined to x-axis
d. Parabola
Q. For any part of a beam subjected to uniformly distributed load, Shear forcediagram is
a. Horizontal straight line
b. Vertical straight line
c. Line inclined to x-axis
d. Parabola
Q. For any part of a beam subjected to uniformly distributed load, bending moment diagram is
a. Horizontal straight line
b. Vertical straight line
c. Line inclined to x-axis
d. Parabola
Q. In a simple supported beam having length = l and subjected to a concentratedload (W) at mid-point.
a. Maximum Bending moment = Wl/4 at the mid-point
b. Maximum Bending moment = Wl/4 at the end
c. Maximum Bending moment = Wl/8 at the mid-point
d. Maximum Bending moment = Wl/8 at the end
Q. In a cantilever subjected to a concentrated load (W) at the free end and having length =l, Maximum bending moment is
a. Wl at the free end
b. Wl at the fixed end
c. Wl/2 at the fixed end
d. Wl at the free end
Q. At a point in a simply supported or overhanging beam where Shear force changes sign and = 0, Bending moment is
a. Maximum
b. Zero
c. Either increasing or decreasing
d. Infinity
Q. In a cantilever subjected to a combination of concentrated load, uniformly distributed load and uniformly varying load, Maximum bending moment is
a. Where shear force=0
b. At the free end
c. At the fixed end
d. At the mid-point
Q. Point of contra-flexure is a
a. Point where Shear force is maximum
b. Point where Bending moment is maximum
c. Point where Bending moment is zero
d. Point where Bending moment=0 but also changes sign from positive to negative