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This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on Design Of Steel Structures Set 5
Q1 | Effective length of a column effectively held in position and restrained in direction at one end butneither held in position nor restrained in direction at the other end, is
- 1.5 l
- 0.67 l
- 0.85 l
- 2 l
Q2 | The equivalent axial load may be defined as the load which produces a stress equal to
- maximum stress produced by the eccentric load
- maximum stressed fibre
- bending stress
- none of these
Q3 | If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tensionwill be taken as
- 120 mm
- 160 mm
- 200 mm
- 300 mm
Q4 | The connection of one beam to another beam by means of an angle at the bottom and an angle atthe top, is known as
- unstiffened seated connection
- stiffened seated connection
- seated connection
- none of these
Q5 | The channels get twisted symmetrically with regard to its axis
- parallel to flanges
- parallel to web
- perpendicular to flanges
- perpendicular to web
Q6 | Bolts are most suitable to carry
- shear
- bending
- axial tension
- shear and bending
Q7 | Rolled steel angle sections are classified as
- equal angles
- unequal angles
- bulb angles
- all the above
Q8 | According to I.S. : 800 - 1871, lacing bars resist transverse shear equal to
- 1.0% of the axial load
- 2.0% of the axial load
- 2.5% of the axial load
- 3.0% of the axial load
Q9 | The effective length of a battened strut effectively held in position at both ends but not restrainedin direction is taken as
- 1.8 l
- l
- 1.1 l
- 1.5 l
Q10 | The method of design of steel framework for greatest rigidity and economy in weight, is known as
- simply design
- semi-rigid design
- fully rigid design
- none of these
Q11 | For a cantilever beam of length built-in at the support and restrained against torsion at the freeend, the effective projecting length is
- l = 0.7 l
- l = 0.75 l
- l = 0.85 l
- l = 0.5 l
Q12 | Economical depth of a plate girder corresponds to
- minimum weight
- minimum depth
- maximum weight
- minimum thickness of web
Q13 | Slenderness ratio of a compression member is
- moment of inertia/radius of gyration
- effective length/area of cross-section
- radius of gyration/effective length
- radius of gyration/ area of cross-section
Q14 | The least permissible clear dimension of the web of thickness t in the panel of a plate girder, isrestricted to
- 150 t
- 160 t
- 170 t
- 180 t
Q15 | Web crippling generally occurs at the point where
- bending moment is maximum
- shearing force is minimum
- concentrated loads act
- deflection is maximum
Q16 | The basic wind speed is specified at a height 'h' above mean ground level in an open terrain. Thevalue of 'h' is
- 10 m
- 20 m
- 25 m
- 50 m
Q17 | If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced notgreater than
- d
- 1.25 d
- 1.5 d
- 1.75 d
Q18 | If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at adistance not greater than
- d but not less than 0.20 d
- 1.25 d but not less than 0.33 d
- 1.5 d but not less than 0.33 d
- 2.0 d but not less than 0.50 d
Q19 | The allowable tensile stress in structural mild steel plates for steel tank is assumed as
- 95.0 mpa on net area
- 105.5 mpa on net area
- 105.5 mpa on gross area
- 150.0 mpa on gross area
Q20 | A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness ofthe web is less than
- d/250 for structural steel
- d/225 for high tensile steel
- both (c) and (b)
- neither (a) nor (b)
Q21 | The strength of ISA 125 = 75 × 10 mm used as a tie member with its longer leg connected at theends by 27 mm diameter rivets, is
- 26,000 kg
- 26,025 kg
- 26,050 kg
- 26,075 kg
Q22 | For a column of height fixed in position and direction both at its top and bottom, its effectivelength, is
- l
- l
- ½ l
- 2l
Q23 | As per ISI, rolled steel beam sections are classified into
- two series
- three series
- four series
- five series
Q24 | Shape factor is a property which depends
- only on the ultimate stress of the material
- only on the yield stress of the material
- only on the geometry of the section
- both on the yield stress and ultimate stress of material
Q25 | A tension member, if subjected to possible reversal of stress due to wind, the slenderness ratio ofthe member should not exceed
- 180
- 200
- 300
- 350