MIDTERM 2025

Question 1

Which of the ff. refers to the flexibility of a structures?
a.stiffness
b.inverse of stiffness
c.static deflection
d.rigidity

Answer 1

Inverse of Stiffness

Question 2

A beam is said to be of uniform strength if

Answer 2

bending stress is same throughout the beam

Question 3

A type of support that can stand alone

Answer 3

fixed

Question 4

If a member, whose tensile strength is more than two times the shear strength,is subjected to an axial load up to failure, the failure of the member will occur by

Answer 4

Maximum shear stress

Question 5

Two shafts A and B transmit the same power. The speed of shaft A is 250 rpm and that of shaft B is 300 rpm. Which of the ff is true?

Answer 5

Shaft A has greater diameter

Question 6

A term given for the value beyond which the stress is no longer proportional to the strain is called

Answer 6

proportional limit

Question 7

Materials which have the same composition at any point ate described as

Answer 7

homogeneous

Question 8

which property of a material enables it to under large permanent strains before failure

Answer 8

ductility

Question 9

the ability if a material to absorb energy in the plastic range is called
a.elatisticity
b.plasticity
c.toughness
d.stiffness

Answer 9

toughness

Question 10

it is the point thru which the resultant of the resistance to the applied force acts
a.center of rigidity
b.eccentricity
c.center of mass
d.center of gravity

Answer 10

center of rigidity

Question 11

which of the ff is a force?
a. 12 dynes
b. 10kg.m/^2
c.15kips
d. all of the above

Answer 11

All of the above

Question 12

A stone whirled in a vertical circle, the tension in the string , is maximum

Answer 12

when the stone is at the lowest position

Question 13

a force applied in a truss member is a
a.reversed effective force
b.external force
c.applied force
d.internal force

Answer 13

Internal Force

Question 14

The angle between two forces when the resultant is maximum and minimum respectively are

Answer 14

0 and 180

Question 15

The apparent weight of a man in a moving elevator is more than his real weight when it is

Answer 15

going up

Question 16

It is often called moment of a force
a.couple
b.moment arm
c.torque
d.moment center

Answer 16

torque

Question 17

which is not true about 2 forces in equilibrium

Answer 17

the two forces are unequal & the two forces are perpendicular

Question 18

Two or more forces acting as a single force on the free body diagram is
a.reaction
b.equilibrant
c.resultant force
d.external force

Answer 18

resultant force

Question 19

forces of which the line of action are intersecting in two or more points

Answer 19

non-concurrent forces

Question 20

a type of support that cannot stand alone

Answer 20

roller, rocker, hinged

Question 21

A man can exert a maximum pull of 1000N, but wishes to lift a stone door for his cave weighing 20kN. If he uses a lever, how much closer must the fulcrum be to be stone than to his hand?

Answer 21

20 times farther

Question 22

The ratio of the increase in the length to the original length of the material
a.volume strain
b.tensile strain
c.compressive strain
d.poisson’s ratio

Answer 22

tensile strain

Question 23

A simple beam of length ‘L’ has a concentrated load ‘P’ at a distance ‘a’ from the left support and ‘b’ from the right support. The maximum moment of the beam is

Answer 23

Mmax= Pab/L

Question 24

Limit state of crack initiation and growth resulting from repeated application of live loads
a.collapse
b.stress
c.fatigue
d.creep

Answer 24

fatigue

Question 25

Buckling mode of a flexural member involving deflection out of the plane of bending occurring simultaneously with twist about the shear center of the cross section a.flexural torsional buckling b.flexural buckling c.lateral torsional buckling d.torsional buckling

Answer 25

Lateral-Torsional Buckling

Question 26

Framing system that provides resistance to lateral loads and provides stability to the structural system primarily by shear and flexure of the framing members and their connections a.cross bracing b.portal frame c.braced frame d.moment frame

Answer 26

moment frame

Question 27

Buckling mode in which a compression member deflects laterally without twist or change in cross sectional shape a.flexural torsional buckling b.flexural buckling c.lateral torsional buckling d.torsional buckling

Answer 27

Flexural Buckling

Question 28

Limiting condition affecting the ability of a structure to preserve its appearance, maintainability, durability or the comfort of its occupants or function of machinery, under normal usage

Answer 28

Serviceability Limit State

Question 29

Strength limited by breaking or tearing of members or connecting elements a.shearing strength b.tensile strength c.bearing strength d.rupture strength

Answer 29

rupture strength

Question 30

It is the point thru which the applied seismic force acts a.center of gravity b.center of mass c.center of rigidity d.out of plane offset

Answer 30

center of mass

Question 31

Any appreciable lateral or side ward movement of top of a vertical member relative to its bottom is known as a.sidesway b.sway c.lateral drift d.all of the above

Question 32

A vertical column has two moments of inertia (i.e, Ix, Iy). The column will not tend to buckle in the direction of the

Answer 32

max. moment of inertia

Question 33

If a member is subjected to an axial tensile load,the plane inclined at 45 degree to the axis of loading carries a.max. shear stress b.min. shear stress c.max. tensile stress d.none of the above

Answer 33

Maximum Shear Stress

Question 34

It is the point thru which the resultant of the resistance to the applied lateral force acts

Answer 34

Center of Rigidity

Question 35

It is the point thru which the applied seismic force acts

Answer 35

Center of Mass

Question 36

It refers to flexibility of a structure a.reciprocal of deflection b.reciprocal of stiffness c.static deflection d.stiffness

Answer 36

Reciprocal of Stiffness