Deck 5: Moment of Inertia, Bending Moment, and Shear Force for Beams

Question 1

The moment of inertia of a body is always minimum with respect to its

A)Base
B)Centroidal axis
C)Vertical axis
D)Horizontal axis

Answer 1

Centroidal axis

Question 2

Moment of inertia is the

A)Second moment of area
B)Second moment of mass
C)Second moment of force
D)All of these

Answer 2

All of these

Question 3

In a simply supported beam carrying a uniformly distributed load W/m over the left half span, the point of contra flexure will occur in

A)Left half span of the beam
B)Right half span of the beam.
C)Quarter points of the beam
D)Does not exist

Answer 3

Does not exist

Question 4

A sudden increase or decrease in shear force diagram between any two points indicates that there is

A)No loading between the two points
B)Point loads between the two points
C)U.D.L. between the two points
D)None of these

Question 5

When the bending moment is parabolic curve between two points, it indicates that there is

A)No loading between the two points
B)Point loads between the two points
C)U.D.L. between the two points
D)Uniformly varying load between the two points

Question 6

In Fig.(a), max B.M. will be

A)40 kN^-m
B)50 kN^-m
C)60 kN^-m
D)80 kN^-m

Question 7

In Fig. (a), slope of S.F.D. between B and C will be

A)Zero
B)10 kN
C)15 kN
D)20 kN

Question 8

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

A)Maximum
B)Minimum
C)Zero
D)Uniform

Question 9

What is the maximum shear force, when a cantilever beam is loaded with udl throughout?

A)w×l
B)w
C)w/l
D)w+l

Question 10

Sagging, the bending moment occurs at the of the beam.

A)At supports
B)Mid span
C)Point of contraflexure
D)Point of emergence

Question 11

What will be the variation in BMD for the diagram? [Assume l = 2m].

A)Rectangular
B)Trapezoidal
C)Triangular
D)Square

Question 12

What is the maximum bending moment for simply supported beam carrying a point load "W" kN at its centre?

A)W kN^m
B)W/m kN^m
C)W×l kN^m
D)W×l/4 kN^m

Question 13

How do point loads and udl be represented in SFD?

A)Simple lines and curved lines
B)Curved lines and inclined lines
C)Simple lines and inclined lines
D)Can't represent any more

Question 14

curve is formed due to bending of overhanging beams.

A)Elastic
B)Plastic
C)Flexural
D)Axial

Question 15

The relation between slope and maximum bending moment is

A)Directly proportion
B)Inversely proportion
C)Relative proportion
D)Mutual incidence

Question 16

What is the SF at support B?

A)5 kN
B)3 kN
C)2 kN
D)0 kN

Question 17

Where do the maximum BM occurs for the below diagram.

A)-54 kN^m
B)-92 kN^m
C)-105 kN^m
D)- 65 kN^m

Question 18

Shear force is unbalanced to the left or right of the section.

A)Horizontal force
B)Vertical force
C)Inclined force
D)Conditional force

Question 19

SI units of shear force is

A)kN/m
B)kN^-m
C)kN
D)m/N

Question 20

Determine the moment at fixed end.

A)40 kN^m
B)50 kN^m
C)60 kN^m
D)80 kN^m

Question 21

Shear force diagram is representation of shear force plotted as ordinate.

A)Scalar
B)Aerial
C)Graphical
D)Statically

Question 22

Hogging is

A)Negative bending moment
B)Positive shear force
C)Positive bending moment
D)Negative shear force

Question 23

At the point of contraflexure, the value of bending moment is

A)Zero
B)Maximum
C)Can't be determined
D)Minimum

Question 24

Positive/negative bending moments occur where shear force changes its sign.

A)Minimum
B)Zero
C)Maximum
D)Remains same

Question 25

Shear force of following diagram

A)Rectangle
B)Square
C)Circle
D)Trapezoidal