Theory Quiz (DPN20123) - Chapter 7

What is the bending moment at end supports of a simply supported beam?

• Maximum

• Minimum

• Zero

• Uniform

A beam is a structural member which is subjected to

• Axial tension or compression

• Transverse loads and couples

• Twisting moment

• No load, but its axis should be horizontal and x-section rectangular or circular

Which of the following are statically determinate beams?

• Only simply supported beams

• Cantilever, overhanging and simply supported

• Fixed beams

• Continuous beams

A cantilever is a beam whose

• Both ends are supported either on rollers or hinges

• One end is fixed and other end is free

• Both ends are fixed

• Whose both or one of the end has overhang

In a simply supported beam, bending moment at the end

• Is always zero if it does not carry couple at the end

• Is zero, if the beam has uniformly distributed load only

• Is zero if the beam has concentrated loads only

• May or may not be zero

For any part of the beam, between two concentrated load Shear force diagram is a

• Horizontal straight line

• Vertical straight line

• Line inclined to x-axis

• Parabola

For any part of a beam between two concentrated load, Bending moment diagram is a

• Horizontal straight line

• Vertical straight line

• Line inclined to x-axis

• Parabola

A sudden jump anywhere on the Bending moment diagram of a beam is caused by

• Couple acting at that point

• Couple acting at some other point

• Concentrated load at the point

• Uniformly distributed load or Uniformly varying load on the beam

Maximum bending moment is

• Wl

• W(l-a)

• Wa

• W(l+a)

At a point in a simply supported or overhanging beam where Shear force changes sign and = 0, Bending moment is

• Maximum

• Zero

• Either increasing or decreasing

• Infinity