Design Of Steel Structures Set 1 MCQs

Q1 | Select the correct statement

material cost of a rivet is higher than that of a bolt

tensile strength of a bolt is lesser than that of a rivet

bolts are used as a temporary fastening whereas rivets are used as permanent fastenings

riveting is less noisy than bolting

Q2 | The forces acting on the web splice of a plate girder are

axial forces

shear and axial forces

shear and bending forces

axial and bending forces

Q3 | Generally the purlins are placed at the panel points so as to avoid

axial force in rafter

shear force in rafter

deflection of rafter

bending moment in rafter

Q4 | Which of the following sections should preferably be used at places where torsion occurs?

angle section

channel section

box type section

any of the above

Q5 | Other conditions being same, the load factor in indeterminate structures is

equal to load factor in determinate structures

more than the load factor in determinate structures

less than the load factor in determinate structures

unpredictable

Q6 | Rivets connecting flange angles to cover plates in a plate girder are subjected to

horizontal shear only

vertical load only

both (a) and (b)

none of the above

Q7 | The effective length of a fillet weld should not be less than

two times the weld size

four times the weld size

six times the weld size

weld size

Q8 | In a gusseted base, when the end of the column is machined for complete bearing on the baseplate, then the axial load is assumed to be transferred to base plate

fully by direct bearing

fully through fastenings

50% by direct bearing and 50% through fastenings

75% by direct bearing and 25% through fastenings

Q9 | If the floor is supported at or near the bottom but top chords of a bridge is not braced, then thebridge is called

deck type

through type

half through type

double deck type

Q10 | The elastic strain for steel is about

1/12 of strain at the initiation of strain hardening and about 1/120 of maximum strain

1/2 of strain at the initiation of strain hardening and about 1/12 of maximum strain

1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain

1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain

Q11 | In the virtual work method, the virtual quantity is

displacement

load

slope

moment

Q12 | In moment resistant connections, the moment resistance of riveted connection depends upon

shear in rivets

compression in rivets

tension in rivets

strength of rivets in bearing

Q13 | The portal bracing in a truss bridge is used to

transfer load from top of end posts to bearings

keep the rectangular shape of the bridge cross-section

stiffen the structure laterally

prevent the sides-way buckling of top chord

Q14 | The maximum permissible span of asbestos cement sheets is

650 mm

810 mm

1250 mm

1680 mm

Q15 | Lacing bars in a steel column should be designed to resist

bending moment due to 2.5% of the column load

shear force due to 2.5% of the column load

2.5% of the column load

both (a) and (b)

Q16 | The moment of the couple set up in a section of a beam by the longitudinal compressive andtensile force, is known as

bending moment

moment of resistance

flexural stress moment

none of these

Q17 | The thickness of the web of a mild steel plate girder is less than d/200. If only one horizontalstiffener is used, it is placed at

the neutral axis of the section

2/3rd of the depth of the neutral axis from the compression flange

2/5th of the depth of the neutral axis from the compression flange

2/5th of the height of the neutral axis from tension flange

Q18 | Shear buckling of web in a plate girder is prevented by using

vertical intermediate stiffener

horizontal stiffener at neutral axis

bearing stiffener

none of the above

Q19 | The most commonly used sections in lateral system to carry shear force in built up columns, are

rolled steel flats

rolled angles

rolled channels

all the above

Q20 | The stress in the wall of a thin cylinder subjected to internal pressure, is

hoop compression

shear

torsional shear

hoop tension

Q21 | The risk coefficient k, depends on

mean probable design life of structures

basic wind speed

both (a) and (b)

none of the above

Q22 | For eccentrically loaded columns, the bending factor is

cross-sectional area of column/radius of gyration

radius of gyration/cross-sectional area of column

cross-sectional area of column/section modulus of the section

section modulus of the section/cross-sectional area of column

Q23 | The net area of round bars to resist the tension, is the area of cross section at

mid-section

root of the thread

difference of (a) and (b)

none of these

Q24 | The bracing between two columns of a steel tank will be designed to resist

horizontal shear due to wind or earthquake only

horizontal, shear due to wind or earthquake + 2.5% of column loads

column loads + 2.5% of horizontal shear due to wind or earthquake

column loads + full horizontal shear due to wind or earthquake

Q25 | A column splice is used to increase

length of the column

strength of the column

cross-sectional area of the column

none of these