McqMate
| 101. |
Effective length of a column effectively held in position and restrained in direction at one end but neither held in position nor restrained in direction at the other end, is |
| A. | 1.5 l |
| B. | 0.67 l |
| C. | 0.85 l |
| D. | 2 l |
| Answer» D. 2 l | |
| 102. |
The equivalent axial load may be defined as the load which produces a stress equal to |
| A. | maximum stress produced by the eccentric load |
| B. | maximum stressed fibre |
| C. | bending stress |
| D. | none of these |
| Answer» A. maximum stress produced by the eccentric load | |
| 103. |
If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as |
| A. | 120 mm |
| B. | 160 mm |
| C. | 200 mm |
| D. | 300 mm |
| Answer» B. 160 mm | |
| 104. |
The connection of one beam to another beam by means of an angle at the bottom and an angle at the top, is known as |
| A. | unstiffened seated connection |
| B. | stiffened seated connection |
| C. | seated connection |
| D. | none of these |
| Answer» C. seated connection | |
| 105. |
The channels get twisted symmetrically with regard to its axis |
| A. | parallel to flanges |
| B. | parallel to web |
| C. | perpendicular to flanges |
| D. | perpendicular to web |
| Answer» B. parallel to web | |
| 106. |
Bolts are most suitable to carry |
| A. | shear |
| B. | bending |
| C. | axial tension |
| D. | shear and bending |
| Answer» C. axial tension | |
| 107. |
Rolled steel angle sections are classified as |
| A. | equal angles |
| B. | unequal angles |
| C. | bulb angles |
| D. | all the above |
| Answer» D. all the above | |
| 108. |
According to I.S. : 800 - 1871, lacing bars resist transverse shear equal to |
| A. | 1.0% of the axial load |
| B. | 2.0% of the axial load |
| C. | 2.5% of the axial load |
| D. | 3.0% of the axial load |
| Answer» C. 2.5% of the axial load | |
| 109. |
The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as |
| A. | 1.8 l |
| B. | l |
| C. | 1.1 l |
| D. | 1.5 l |
| Answer» C. 1.1 l | |
| 110. |
The method of design of steel framework for greatest rigidity and economy in weight, is known as |
| A. | simply design |
| B. | semi-rigid design |
| C. | fully rigid design |
| D. | none of these |
| Answer» C. fully rigid design | |
| 111. |
For a cantilever beam of length built-in at the support and restrained against torsion at the free end, the effective projecting length is |
| A. | l = 0.7 l |
| B. | l = 0.75 l |
| C. | l = 0.85 l |
| D. | l = 0.5 l |
| Answer» B. l = 0.75 l | |
| 112. |
Economical depth of a plate girder corresponds to |
| A. | minimum weight |
| B. | minimum depth |
| C. | maximum weight |
| D. | minimum thickness of web |
| Answer» A. minimum weight | |
| 113. |
Slenderness ratio of a compression member is |
| A. | moment of inertia/radius of gyration |
| B. | effective length/area of cross-section |
| C. | radius of gyration/effective length |
| D. | radius of gyration/ area of cross-section |
| Answer» C. radius of gyration/effective length | |
| 114. |
The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to |
| A. | 150 t |
| B. | 160 t |
| C. | 170 t |
| D. | 180 t |
| Answer» D. 180 t | |
| 115. |
Web crippling generally occurs at the point where |
| A. | bending moment is maximum |
| B. | shearing force is minimum |
| C. | concentrated loads act |
| D. | deflection is maximum |
| Answer» C. concentrated loads act | |
| 116. |
The basic wind speed is specified at a height 'h' above mean ground level in an open terrain. The value of 'h' is |
| A. | 10 m |
| B. | 20 m |
| C. | 25 m |
| D. | 50 m |
| Answer» A. 10 m | |
| 117. |
If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than |
| A. | d |
| B. | 1.25 d |
| C. | 1.5 d |
| D. | 1.75 d |
| Answer» C. 1.5 d | |
| 118. |
If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at a distance not greater than |
| A. | d but not less than 0.20 d |
| B. | 1.25 d but not less than 0.33 d |
| C. | 1.5 d but not less than 0.33 d |
| D. | 2.0 d but not less than 0.50 d |
| Answer» B. 1.25 d but not less than 0.33 d | |
| 119. |
The allowable tensile stress in structural mild steel plates for steel tank is assumed as |
| A. | 95.0 mpa on net area |
| B. | 105.5 mpa on net area |
| C. | 105.5 mpa on gross area |
| D. | 150.0 mpa on gross area |
| Answer» B. 105.5 mpa on net area | |
| 120. |
A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than |
| A. | d/250 for structural steel |
| B. | d/225 for high tensile steel |
| C. | both (c) and (b) |
| D. | neither (a) nor (b) |
| Answer» C. both (c) and (b) | |
| 121. |
The strength of ISA 125 = 75 × 10 mm used as a tie member with its longer leg connected at the ends by 27 mm diameter rivets, is |
| A. | 26,000 kg |
| B. | 26,025 kg |
| C. | 26,050 kg |
| D. | 26,075 kg |
| Answer» D. 26,075 kg | |
| 122. |
For a column of height fixed in position and direction both at its top and bottom, its effective length, is |
| A. | l |
| B. | l |
| C. | ½ l |
| D. | 2l |
| Answer» C. ½ l | |
| 123. |
As per ISI, rolled steel beam sections are classified into |
| A. | two series |
| B. | three series |
| C. | four series |
| D. | five series |
| Answer» D. five series | |
| 124. |
Shape factor is a property which depends |
| A. | only on the ultimate stress of the material |
| B. | only on the yield stress of the material |
| C. | only on the geometry of the section |
| D. | both on the yield stress and ultimate stress of material |
| Answer» C. only on the geometry of the section | |
| 125. |
A tension member, if subjected to possible reversal of stress due to wind, the slenderness ratio of the member should not exceed |
| A. | 180 |
| B. | 200 |
| C. | 300 |
| D. | 350 |
| Answer» D. 350 | |
| 126. |
Lug angles |
| A. | are used to reduce the length of connection |
| B. | are unequal angles |
| C. | increases shear lag |
| D. | all the above |
| Answer» A. are used to reduce the length of connection | |
| 127. |
The Indian standard code which deals with steel structures, is |
| A. | is : 875 |
| B. | is : 800 |
| C. | is : 456 |
| D. | is : 1893 |
| Answer» B. is : 800 | |
| 128. |
Under a concentrated load, bearing stress fb in a beam is given by (where b is the length of the bearing plate and h is the depth of the root of the fillet). |
| A. | fb = w/(b + h tw |
| B. | fb = w/(b + 2h tw |
| C. | fb = w/(b + 2h tw |
| D. | fb = w/(b + h tw |
| Answer» B. fb = w/(b + 2h tw | |
| 129. |
When the axis of load lies in the plane of rivet group, then the rivets are subjected to |
| A. | only shear stresses |
| B. | only tensile stresses |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» A. only shear stresses | |
| 130. |
For double angles carrying tension, placed back to back and connected to either side of the gusset plate, the sectional area of the section, is equal to cross sectional area of |
| A. | the section |
| B. | the section plus area of rivet holes |
| C. | the section minus area of rivet holes |
| D. | the section multiplied by the area of the rivet hole |
| Answer» C. the section minus area of rivet holes | |
| 131. |
The beam outside a wall upto floor level above it, is known as |
| A. | rafter |
| B. | purlin |
| C. | spandrel beam |
| D. | lintel |
| Answer» C. spandrel beam | |
| 132. |
In the cross-section of a weld, throat is the |
| A. | minimum dimension |
| B. | average dimension |
| C. | maximum dimension |
| D. | none of the above |
| Answer» A. minimum dimension | |
| 133. |
The rivets which are heated and then driven in the field, are known |
| A. | power driven shop rivets |
| B. | power driven field rivets |
| C. | hand driven rivets |
| D. | cold driven rivets |
| Answer» B. power driven field rivets | |
| 134. |
According to IS: 800, in the Merchant Rankine formula the value of imperfection index (n) is |
| A. | 1.0 |
| B. | 1.4 |
| C. | 1.8 |
| D. | 2.0 |
| Answer» B. 1.4 | |
| 135. |
When a large value of radius of gyration is not required |
| A. | channels are placed back to back |
| B. | channel flanges are kept inward |
| C. | channel flanges are kept outward |
| D. | none of these |
| Answer» B. channel flanges are kept inward | |
| 136. |
The ratio of hydrostatic stress to the volumetric strain within the elastic range, is called |
| A. | modulus of elasticity |
| B. | shear modulus of elasticity |
| C. | bulk modulus of elasticity |
| D. | all the above |
| Answer» D. all the above | |
| 137. |
Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is |
| A. | 5 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» B. 6 mm | |
| 138. |
If d is the distance between the flange angles, the vertical stiffeners in plate girders without horizontal stiffeners, are spaced at a distance not less than |
| A. | 0.15 d |
| B. | 0.22 d |
| C. | 0.33 d |
| D. | 0.44 d |
| Answer» C. 0.33 d | |
| 139. |
Long column is one |
| A. | which is more than 3 m long |
| B. | whose lateral dimension is less than 25 cm |
| C. | which is free at its top |
| D. | which has a ratio of effective length and least lateral dimension more than 15 |
| Answer» D. which has a ratio of effective length and least lateral dimension more than 15 | |
| 140. |
To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 141. |
When the length of a tension member is too long |
| A. | a wire rope is used |
| B. | a rod is used |
| C. | a bar is used |
| D. | a single angle is used |
| Answer» C. a bar is used | |
| 142. |
In factory buildings, the horizontal beams spanning between the wall columns supporting a wall covering, are called |
| A. | stringers |
| B. | trimmers |
| C. | girts |
| D. | lintels |
| Answer» C. girts | |
| 143. |
The minimum thickness of plates in a steel stack should be |
| A. | 4 mm |
| B. | 5 mm |
| C. | 6 mm |
| D. | 8 mm |
| Answer» C. 6 mm | |
| 144. |
To keep the intensity of bearing pressure between the column base and concrete, compressive throughout the length of the column base, the ratio of the moment M to axial load P should be |
| A. | < l/3 |
| B. | < l/6 |
| C. | > l/3 |
| D. | > l/6 |
| Answer» B. < l/6 | |
| 145. |
A structural member subjected to tensile force in a direction parallel to its longitudinal axis, is generally known as |
| A. | a tie |
| B. | a tie member |
| C. | a tension member |
| D. | all the above |
| Answer» D. all the above | |
| 146. |
Compression force in two end posts, the pin of a rocker bearing in a bridge is designed for |
| A. | bearing and shear |
| B. | bending and shear |
| C. | bearing and bending |
| D. | bearing, shear and bending |
| Answer» D. bearing, shear and bending | |
| 147. |
According to the Unwin's formula, if is thickness of the plate in mm, the nominal diameter of the rivet, is |
| A. | d = 1.91 t |
| B. | d = 1.91 t2 |
| C. | d = 1.91 t |
| D. | d = 1.91 t |
| Answer» C. d = 1.91 t | |
| 148. |
The ratio of plastic section modulus to elastic section modulus |
| A. | is equal to 1 |
| B. | is always less than 1 |
| C. | is always greater than 1 |
| D. | can be less than 1 |
| Answer» C. is always greater than 1 | |
| 149. |
Bulb angles are used in |
| A. | column building |
| B. | bridge building |
| C. | ship building |
| D. | water tank building |
| Answer» C. ship building | |
| 150. |
The diameter of a bolt hole is taken as the nominal diameter of the bolt plus |
| A. | 1.0 mm |
| B. | 1.2 mm |
| C. | 1.4 mm |
| D. | 1.6 mm |
| Answer» D. 1.6 mm | |
| 151. |
The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible for cleaning and repainting, should be: |
| A. | 4.5 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» C. 8 mm | |
| 152. |
For determination of allowable stress in axial compression, Indian Standard Institution has adopted |
| A. | euler\s formula |
| B. | rankine formula |
| C. | perry robertson formula |
| D. | secant formula |
| Answer» D. secant formula | |
| 153. |
Rolled steel beams are: |
| A. | mainly used to resist bending stress |
| B. | used as independent sections to resist compressive stress |
| C. | used as independent sections to resist tensile stress |
| D. | all the above |
| Answer» D. all the above | |
| 154. |
According to IS : 800 - 71, the minimum thickness of a vertically stiffened web plate, shall not be less than |
| A. | d/85 |
| B. | d/200 |
| C. | d/225 |
| D. | d/250 |
| Answer» D. d/250 | |
| 155. |
A web plate is called unstiffened if the ratio of clear depth to thickness is less than |
| A. | 35 |
| B. | 50 |
| C. | 65 |
| D. | 85 |
| Answer» D. 85 | |
| 156. |
A butt weld is specified by |
| A. | effective throat thickness |
| B. | plate thickness |
| C. | size of weld |
| D. | penetration thickness |
| Answer» A. effective throat thickness | |
| 157. |
The most economical section for a column, is |
| A. | rectangular |
| B. | solid round |
| C. | flat strip |
| D. | tubular section |
| Answer» D. tubular section | |
| 158. |
In rolled steel beams, shear force is mostly resisted by |
| A. | web only |
| B. | flanges only |
| C. | web and flanges together |
| D. | none of these |
| Answer» A. web only | |
| 159. |
If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be |
| A. | 40 mm |
| B. | 60 mm |
| C. | 80 mm |
| D. | 100 mm |
| Answer» B. 60 mm | |
| 160. |
The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm plus (where t is the thickness in mm of the thinner outside plate). |
| A. | 2 t |
| B. | 4 t |
| C. | 6 t |
| D. | 8 t |
| Answer» B. 4 t | |
| 161. |
For simply supported beams, the maximum permitted deflection, is |
| A. | 1/325 of the span |
| B. | 1/350 of the span |
| C. | 1/375 of the span |
| D. | 1/400 of the span |
| Answer» A. 1/325 of the span | |
| 162. |
The rolled steel I-sections are most commonly used as beams because these provide |
| A. | large moment of inertia with less cross-sectional area |
| B. | large moment of resistance as compared to other section |
| C. | greater lateral stability |
| D. | all the above |
| Answer» D. all the above | |
| 163. |
As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into |
| A. | 4 zones |
| B. | 5 zones |
| C. | 6 zones |
| D. | 7 zones |
| Answer» C. 6 zones | |
| 164. |
Net sectional area of a tension member, is equal to its gross section area |
| A. | plus the area of the rivet holes |
| B. | divided by the area of rivet holes |
| C. | multiplied by the area of the rivet holes |
| D. | none of these |
| Answer» D. none of these | |
| 165. |
For a single section used as a tension member, the given area is assumed |
| A. | 20% to 30% in excess of the net area |
| B. | 30% to 40% in excess of the net area |
| C. | 40% to 50% in excess of the net area |
| D. | 50% to 60% in excess of the net area |
| Answer» C. 40% to 50% in excess of the net area | |
| 166. |
The effective length of a weld, is taken as the actual length |
| A. | minus the size of weld |
| B. | minus twice the size of weld |
| C. | plus the size of weld |
| D. | plus twice the size of weld |
| Answer» B. minus twice the size of weld | |
| 167. |
The greatest gauge of long rivets should not exceed (where d is the diameter of the holes). |
| A. | 2 d |
| B. | 4 d |
| C. | 6 d |
| D. | 8 d |
| Answer» D. 8 d | |
| 168. |
The shape factor of an isosceles triangle for bending about the axis parallel to the base is: |
| A. | 1.5 |
| B. | 1.7 |
| C. | 2.0 |
| D. | 2.34 |
| Answer» D. 2.34 | |
| 169. |
Rolled steel Tee-sections are used |
| A. | as columns |
| B. | with flat strips to connect plates in steel rectangular tanks |
| C. | as built up sections to resist axial tension |
| D. | none of these |
| Answer» B. with flat strips to connect plates in steel rectangular tanks | |
| 170. |
Which of the following types of riveted joint is free from bending stresses? |
| A. | lap joint |
| B. | butt joint with single cover plate |
| C. | butt joint with double cover plates |
| D. | none of the above |
| Answer» C. butt joint with double cover plates | |
| 171. |
The beams supporting the steps of a stair are generally known as |
| A. | headers |
| B. | trimmers |
| C. | stringers |
| D. | spandrel beams |
| Answer» C. stringers | |
| 172. |
Poisson's ratio for steel within elastic limit, ranges from |
| A. | 0.15 to 0.20 |
| B. | 0.25 to 0.24 |
| C. | 0.25 to 0.33 |
| D. | 0.33 to 0.35 |
| Answer» C. 0.25 to 0.33 | |
| 173. |
The minimum width B of a solid casing for a cased beam, is equal to |
| A. | b = b + 25 mm |
| B. | b = b + 50 mm |
| C. | b = b + 75 mm |
| D. | b = b + 100 mm |
| Answer» D. b = b + 100 mm | |
| 174. |
Horizontal stiffener in a plate girder is provided to safeguard against |
| A. | shear buckling of web plate |
| B. | compression buckling of web plate |
| C. | yielding |
| D. | all of the above |
| Answer» B. compression buckling of web plate | |
| 175. |
If W and L are the total superimposed load and the span of a plate girder in metres, the approximate self weight (W) of the girder, is taken as |
| A. | m = wl/100 |
| B. | m = wl/200 |
| C. | m = wl/300 |
| D. | m = wl/400 |
| Answer» C. m = wl/300 | |
| 176. |
Maximum permissible slenderness ratio of a member normally acting as a tie in a roof truss, is |
| A. | 180 |
| B. | 200 |
| C. | 250 |
| D. | 350 |
| Answer» D. 350 | |
| 177. |
Normally, the angle of roof truss with asbestos sheets should not be less than |
| A. | 26½° |
| B. | 30° |
| C. | 35° |
| D. | 40° |
| Answer» B. 30° | |
| 178. |
An imaginary line along which rivets are placed, is known as |
| A. | rivet line |
| B. | back line |
| C. | gauge line |
| D. | all the above |
| Answer» D. all the above | |
| 179. |
Pick up the correct statement from the following: |
| A. | loaded columns are supported on column bases |
| B. | column bases transmit the column load to the concrete foundation |
| C. | column load is spread over a large area on concrete |
| D. | all the above |
| Answer» D. all the above | |
| 180. |
The capacity of the smallest pressed steel tank is |
| A. | 1000 litre |
| B. | 1650 litre |
| C. | 1950 litre |
| D. | 2450 litre |
| Answer» C. 1950 litre | |
| 181. |
The permissible stress to which a structural member can be subjected to, is known as |
| A. | bearing stress |
| B. | working stress |
| C. | tensile stress |
| D. | compressive stress |
| Answer» B. working stress | |
| 182. |
Tacking rivets in tension members, are provided at a pitch in line not exceeding |
| A. | 25 cm |
| B. | 50 cm |
| C. | 75 cm |
| D. | 100 cm |
| Answer» D. 100 cm | |
| 183. |
In case of timber structures, the form factor for solid circular cross-section is taken as |
| A. | 1.18 |
| B. | 1.414 |
| C. | 1.67 |
| D. | 1.81 |
| Answer» A. 1.18 | |
| 184. |
The distance between the outer faces of flanges of a plate girder, is known as |
| A. | overall depth |
| B. | clear depth |
| C. | effective depth |
| D. | none of these |
| Answer» A. overall depth | |
| 185. |
When the depth of a plate girder is at least times the depth of vertical leg of the flange angles, the girder is known as deep plate girder, if is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 186. |
Which of the following conditions is to be satisfied both in elastic and plastic analysis? |
| A. | equilibrium condition |
| B. | yield condition |
| C. | plastic moment condition |
| D. | mechanism condition |
| Answer» A. equilibrium condition | |
| 187. |
If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is |
| A. | 6 |
| B. | 8 |
| C. | 10 |
| D. | 15 |
| Answer» B. 8 | |
| 188. |
In a grillage footing, the maximum shear force occurs at the |
| A. | edge of grillage beam |
| B. | centre of base plate |
| C. | centre of grillage beam |
| D. | centre of base plate |
| Answer» B. centre of base plate | |
| 189. |
The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is |
| A. | 1.0 mm |
| B. | 1.5 mm |
| C. | 2.0 mm |
| D. | 2.5 mm |
| Answer» B. 1.5 mm | |
| 190. |
Pick up the correct statement from the following: |
| A. | vertical stiffeners may be placed in pairs one on each side of the web |
| B. | single vertical stiffeners may be placed alternately on opposite sides of the web |
| C. | horizontal stiffeners may be placed alternately on opposite sides of the web |
| D. | all the above |
| Answer» D. all the above | |
| 191. |
The greatest permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to |
| A. | 180 t |
| B. | 220 t |
| C. | 230 t |
| D. | 270 t |
| Answer» D. 270 t | |
| 192. |
The maximum slenderness ratio of a compression member carrying both dead and superimposed load is |
| A. | 180 |
| B. | 200 |
| C. | 250 |
| D. | 350 |
| Answer» A. 180 | |
| 193. |
Pick up the incorrect statement from the following: |
| A. | the nominal diameter of a rivet is its diameter before driving |
| B. | the gross diameter of a rivet is the diameter of rivet hole |
| C. | the gross area of a rivet is the cross-sectional area of the rivet hole |
| D. | the diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm |
| Answer» D. the diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm | |
| 194. |
Effective length of a column effectively held in position at both ends and restrained in direction at one end, is |
| A. | l |
| B. | 0.67 l |
| C. | 0.85 l |
| D. | 1.5 l |
| Answer» C. 0.85 l | |
| 195. |
If the unsupported length of a stanchion is 4 metres and least radius of gyration of its cross-section is 5, the slenderness ratio of the stanchion, is |
| A. | 60 |
| B. | 70 |
| C. | 80 |
| D. | 100 |
| Answer» C. 80 | |
| 196. |
For a cantilever beam of length continuous at the support and unrestrained against torsion at the support and free at the end, the effective length is equal to |
| A. | l = l |
| B. | l = 2l |
| C. | l = 0.5l |
| D. | l = 3l |
| Answer» D. l = 3l | |
| 197. |
Hudson's formula gives the dead weight of a truss bridge as a function of |
| A. | bottom chord area |
| B. | top chord area |
| C. | effective span of bridge |
| D. | heaviest axle load of engine |
| Answer» A. bottom chord area | |
| 198. |
The deflection of beams may be decreased by |
| A. | increasing the depth of beam |
| B. | increasing the span |
| C. | decreasing the depth of beam |
| D. | increasing the width of beam |
| Answer» A. increasing the depth of beam | |
| 199. |
The moment-curvature relation at a plastic hinge is |
| A. | linear |
| B. | parabolic |
| C. | constant moment for all curvatures |
| D. | constant curvature for all moments |
| Answer» C. constant moment for all curvatures | |
| 200. |
If the depth of the section of an upper column is smaller than the lower column |
| A. | filler plates are provided with column splice |
| B. | bearing plates are provided with column splice |
| C. | filler plates and bearing plates are provided with column splice |
| D. | none of these |
| Answer» D. none of these | |
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