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This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on Design Of Steel Structures Set 3
Q1 | The mechanism method of plastic analysis satisfies
- equilibrium and mechanism conditions
- equilibrium and plastic moment conditions
- mechanism and plastic moment conditions
- equilibrium condition only
Q2 | Rolled steel beams are designated by Indian Standard series and its
- weight per metre and depth of its section
- depth of section and weight per metre
- width of flange and weight per metre
- weight per metre and flange width
Q3 | When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding(where t is the thickness of the outside plate).
- 8 t
- 16 t
- 24 t
- 32 t
Q4 | For a compression member with double angle section, which of the following section will givelarger value of minimum radius of gyration?
- equal angles back to back
- unequal legged angles with long legs back to back
- unequal legged angles with short legs back to back
- both (b) and (c)
Q5 | The gross section of the web of a beam is defined as
- depth of the beam multiplied by its web thickness
- width of the flange multiplied by its web thickness
- sum of the flange width and depth of the beam multiplied by the web thickness
- none of these
Q6 | Pitch of tacking rivets, when double angles connected back to back and acting as tension membersshould not be more than
- 500 mm
- 600 mm
- 1000 mm
- 300 mm
Q7 | In a tension member if one or more than one rivet holes are off the line, the failure of the memberdepends upon:
- pitch
- gauge
- diameter of the rivet holes
- all the above
Q8 | The heaviest I-section for same depth is
- ismb
- islb
- ishb
- iswb
Q9 | The effective length of a compression member of length L, held in position and restrained indirection at both ends, is
- l
- 0.67 l
- 0.85 l
- 1.5 l
Q10 | Efficiency of a riveted joint is defined as the ratio of
- least strength of a riveted joint to the strength of solid plate
- greatest strength of a riveted joint to the strength of solid plate
- least strength of a riveted plate to the greatest strength of the riveted joint
- all the above
Q11 | By providing sufficient edge distance, which of the following failures of riveted joint can beavoided?
- tension failure of the plate
- shear failure of the rivet
- shear failure of the plate
- crushing failure of the rivet
Q12 | The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections andchannels on the effective section, is
- 1500 kg/cm2
- 1420 kg/cm2
- 1650 kg/cm2
- 2285 kg/cm2
Q13 | When the ratio of the moment M to axial load P is greater than L/6, the resultant of thecompressive bearing pressure which acts at a distance Y from one side, is given by
- y = (l/3) - (m/p)
- y = (l/2) - (p/m)
- y = (l/2) + (m/p)
- y = (l/3) + (m/p)
Q14 | A circular column section is generally not used in actual practice because
- it is uneconomical
- it cannot carry the load safely
- it is difficult to connect beams to the round sections
- all of the above
Q15 | Rise of a Jack arch is kept about
- 1/2 to 1/3 of the span
- 1/3 to 1/4 of the span
- 1/4 to 1/8 of the span
- 1/8 to 1/12 of the span
Q16 | For a steel member of slenderness ratio 350, the allowable stress is 76 kg/cm2 if it is
- htw grade of thickness exceeding 32 mm
- ht grade of thickness exceeding 45 mm
- ht grade of thickness not exceeding 45 mm
- all the above
Q17 | The main type of butt joints, is a double cover
- shear riveted joint
- chain riveted joint
- zig-zag riveted joint
- all the above
Q18 | Bearing stiffener in a plate girder is used to
- transfer the load from the top flange to the bottom one
- prevent buckling of web
- decrease the effective depth of web
- prevent excessive deflection
Q19 | The central deflection of a simply supported steel beam of length L with a concentrated load W atthe centre, is
- wl3/3ei
- wl4/3ei
- wl3/48ei
- 5wl4/384ei
Q20 | If d is the distance between the flange angles,
- vertical stiffeners are provided in steel plate girders if the web is less than d/85
- vertical stiffeners are provided in high tensile steel plate girders if the web is less than d/175
- horizontal stiffeners are provided in steel plate girders if the web is less than d/200
- all the above
Q21 | Area of openings for buildings of large permeability is more than
- 10% of wall area
- 20% of wall area
- 30% of wall area
- 50% of wall area
Q22 | In case horizontal stiffeners are not used, the distance between vertical legs of flange angles at thetop and bottom of a plate girder, is known as
- overall depth
- clear depth
- effective depth
- none of these
Q23 | Pick up the correct statement from the following:
- the steel beams placed in plain cement concrete, are known as reinforced beams
- the filler joists are generally continuous over three-supports only
- continuous fillers are connected to main beams by means of cleat angles
- continuous fillers are supported by main steel beams
Q24 | Working shear stress on the gross area of a rivet as recommended by Indian Standards, is
- 785 kg/cm2
- 1025 kg/cm2
- 2360 kg/cm2
- none of these
Q25 | The least dimensio D
- 0.5 d
- 0.68 d
- 0.88 d
- d