McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 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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