Engineering Questions with Answers - Multiple Choice Questions
Strength of Materials MCQs Types of Beams and Loads
1 - Question
_______ is a horizontal structural member subjected to transverse loads perpendicular to its axis.
a) Strut
b) Column
c) Beam
d) Truss
View Answer
Answer: c
Explanation: A beam is a horizontal structural member subjected to a transverse load perpendicular to its own axis. Beams are used to support weights of roof slabs, walls and staircases. The type of beam usually depends upon the span, type of load elasticity and type of structure.
2 - Question
Example for cantilever beam is ______
a) Portico slabs
b) Roof slab
c) Bridges
d) Railway sleepers
View Answer
Answer: a
Explanation: A beam which is fixed at one end and is free at other end, it is called cantilever beam. The examples for it are portico slabs and sunshades.
3 - Question
The diagram depicts _______ kind of beam.<br/>
a) Cantilever<br/>
b) Continuous<br/>
c) Over hanging<br/>
d) Propped cantilever
View Answer
Answer: d
Explanation: A beam which is fixed at one end and free at other end is called cantilever beam. In this case, some support other than the existing ones may be provided in order to avoid excessive deflection or to reduce the amount of bending moment, the additional support is known as a prop. The beam is known as a propped cantilever beam.
4 - Question
Fixed beam is also known as __________
a) Encastered beam
b) Built on beam
c) Rigid beam
d) Tye beam
View Answer
Answer: a
Explanation: A beam which is fixed at both supports is called fixed beam or encastered beam. All framed structures are examples of fixed beams.
5 - Question
U.D.L stands for?
a) Uniformly diluted length
b) Uniformly developed loads
c) Uniaxial distributed load
d) Uniformly distributed loads
View Answer
Answer: d
Explanation: These loads are uniformly spread over a portion or whole area. They are generally represented as rate of load that is Kilo Newton per meter length (KN/m).
6 - Question
Given below diagram is ______ load.<br/>
a) Uniformly distributed load<br/>
b) Uniformly varying load<br/>
c) Uniformly decess load<br/>
d) Point load
View Answer
Answer: b
Explanation: A load which varies uniformly on each unit length is known as uniformly varying load. Sometimes the load is zero at one end and increases uniformly to the other forms of uniformly varying loads.
7 - Question
Moving train is an example of ____ load.
a) Point load
b) Cantered load
c) Rolling load
d) Uniformly varying load
View Answer
Answer: c
Explanation: As train’s wheels (rolling stock) move in rolling way. The upcoming load will be considered as rolling load.
8 - Question
Continuous beams are _________
a) Statically determinate beams
b) Statically indeterminate beams
c) Statically gravity beams
d) Framed beams
View Answer
Answer: b
Explanation: Fixed beams and continuous beams are statically indeterminate beams which cannot be analyzed only by using static equations.
9 - Question
A beam which extends beyond it supports can be termed as __________
a) Over hang beam
b) Over span beam
c) Isolated beams
d) Tee beams
View Answer
Answer: a<br/>
Explanation: A Beam extended beyond its support. And the position of extension is called as over hung portion.
10 - Question
Units of U.D.L?
a) KN/m
b) KN-m
c) KN-m×m
d) KN
View Answer
Answer: a
Explanation: As these loads distribute over span the units for this kind of loads will be load per meter length i.e KN/m. It is denoted by “w”.
11 - Question
Strength of Materials MCQs Introduction to Shear Force and Bending Moment
Shear force is unbalanced _____ to the left or right of the section.
a) Horizontal force
b) Vertical force
c) Inclined force
d) Conditional force
View Answer
Answer: b
Explanation: The shear force at the cross section of a beam may also be defined as the unbalanced vertical force to the left or right of the section. It is also the algebraic sum of all the forces I get to the left to the right of the section.
12 - Question
SI units of shear force is _______________
a) kN/m
b) kN-m
c) kN
d) m/N
View Answer
Answer: c
Explanation: As shear force at any section is equal to the algebraic sum of the forces, the units of the shear force are also in kilo newtons and it is denoted by kN.
13 - Question
Determine the moment at fixed end.<br/>
a) 40 kNm<br/>
b) 50 kNm<br/>
c) 60 kNm<br/>
d) 80 kNm
View Answer
Answer: d
Explanation: Let the fixed end be “A”
Reaction at A = 10×4 = 40 kN
Moment at A = (10×4)×4/2
= 80 kNm.
14 - Question
Shear force is diagram is _______ representation of shear force plotted as ordinate.
a) Scalar
b) Aerial
c) Graphical
d) Statically
View Answer
Answer: c
Explanation: Shear Force diagram is a graphical representation of the shear force plotted as ordinate on baseline representing the axis of the Beam.
15 - Question
Hogging is________
a) Negative bending moment
b) Positive shear force
c) Positive bending moment
d) Negative shear force
View Answer
Answer: a
Explanation: The bending moment at a section is considered to be negative when it causes convexity upwards or concavity at bottom, such bending moment is called hogging bending moment or negative bending moment.
16 - Question
At the point of contraflexure, the value of bending moment is ____________
a) Zero
b) Maximum
c) Can’t be determined
d) Minimum
View Answer
Answer: a
Explanation: A point at which bending moment changes its sign from positive to negative and vice versa. Such point is termed as point of contraflexure. At this point, the value of bending moment is zero (0).
17 - Question
_________ positive/negative bending moments occur where shear force changes its sign.
a) Minimum
b) Zero
c) Maximum
d) Remains same
View Answer
Answer: c
Explanation: If shear force and bending moment values obtained are thus plotted as a diagram, the SF & BM relationship always behaves vice versa.
18 - Question
Shear force of following diagram<br/>
a) Rectangle<br/>
b) Square<br/>
c) Circle<br/>
d) Trapezoidal
View Answer
Answer: a<br/>
Explanation: SF @ AB is 10 kN
FA = 10 kN
FB = 10 kN.
19 - Question
SI units of Bending moment is ___________
a) kN
b) kN2
c) kNm
d) km
View Answer
Answer: c
Explanation: Moment is a product of force and perpendicular distance and the bending moment is the algebraic sum of moments taken away from the left or the right of the section hence the SI units of bending moment is same as the moment i.e kNm.
20 - Question
What is the other name for a positive bending moment?
a) Hogging
b) Sagging
c) Inflation
d) Contraflexure
View Answer
Answer: b
Explanation: The bending moment at a section is considered to be positive when it causes convexity downwards such bending moment is called sagging bending moment positive bending moment.
21 - Question
Strength of Materials MCQs Types of Supports
A simple support offers only _______ reaction normal to the axis of the beam.
a) Horizontal
b) Vertical
c) Inclined
d) Moment
View Answer
Answer: b
Explanation: In a simple support there will not be any resistance to horizontal loads, moment or rotation. In fact, it only offers a vertical reaction normal to the axis of the beam.
22 - Question
To avoid _____ stresses in beams, one end of the beam is placed on the rollers.
a) Compressive
b) Pyro
c) Temperature
d) Tensile
View Answer
Answer: c
Explanation: Roller support reaction is normal to the axis of the beam. In case the beam subjected to trust or to avoid temperature stresses in the beam, one end of the beam is placed on roller because it facilitate free horizontal movement of end. It is similar to simple support.
23 - Question
________ support develops support moment.
a) Hinged
b) Simple
c) Fixed
d) Joint
View Answer
Answer: c
Explanation: A fixed support offers resistance against horizontal and vertical movement and against the rotation of the member and that in turn developers support moment.
24 - Question
Hinge support is called as __________
a) Socket joint
b) Swivel joint
c) Ball joint
d) Pin joint
View Answer
Answer: d
Explanation: Hinge support is one, in which the position is fixed but not the direction. In their words hinged support offers resistance against vertical and horizontal moments.it is fixed in such a way that it resembles like a pin joint.
25 - Question
Name the support from following figure.<br/>
a) Hinge support<br/>
b) Fixed support<br/>
c) Free support<br/>
d) Roller support
View Answer
Answer: b
Explanation: In the above figure we can observe that the beam is supported at both the ends so the beam is fixed at both ends. Hence the support is a fixed support.
26 - Question
For a simply supported beam, the moment at the support is always __________
a) Maximum
b) Zero
c) Minimum
d) Cannot be determined
View Answer
Answer: b
Explanation: As the moment is a product of force and perpendicular distance, the flexural moment at the support is zero because there is no distance at the support.
27 - Question
“Hinged support offers resistance against rotation”.
a) True
b) False
View Answer
Answer: b
Explanation: A hinged support offers resistance against horizontal and vertical movement but not against rotation. It support offers a vertical and horizontal reaction only.
28 - Question
Find the reaction at simple support A?<br/>
a) 6.5 kN<br/>
b) 9 kN<br/>
c) 10 kN<br/>
d) 7.5 kN
View Answer
Answer: d
Explanation: Total load = 10 kN
Taking moment at A = 0
4 × R @ B – 10 = 0
R @ B = 2.5 kN
Reaction at A = 10 – 2.5 = 7.5kN.
29 - Question
Roller support is same as _____
a) Hinged support
b) Fixed support
c) Simply support
d) Roller support
View Answer
Answer: c
Explanation: The support reaction is normal to the axis of the beam. It facilitates the vertical support. It helps the beam to overcome the temperature stresses effectively. It is similar to simple support.
30 - Question
Hinged supports offers vertical and ________ reaction.
a) Horizontal
b) Moment
c) Rotation
d) Couple
View Answer
Answer: a
Explanation: A hinged support offers a vertical and horizontal reaction. The pin jointed support offers resistance against horizontal and vertical movements but not against rotation movement.