MCQOPTIONS
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MCQOPTIONS
This section includes 392 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is________________? |
| A. | 0.303 |
| B. | 0.404 |
| C. | 0.505 |
| D. | 0.707 |
| Answer» E. | |
| 152. |
Flat spiral springs_______________? |
| A. | Consist of uniform thin strips |
| B. | Are supported at outer end |
| C. | Are wound by applying a torque |
| D. | All the above |
| Answer» E. | |
| 153. |
d constant, the width of a cantilever of length l of uniform strength loaded with Keeping the depth a uniformly distributed load w varies from zero at the free end and________________? |
| A. | (2w/ × l² at the fixed end |
| B. | (3w/ × l² at the fixed end |
| C. | (3w/ × l² at the fixed end |
| D. | (5w/ × l² at the fixed end |
| Answer» D. (5w/ × l² at the fixed end | |
| 154. |
cross sections of bronze and copper bars of equal lengt b c are their Ab and Ac are the respective stresses due to load P. If Pb and Pc are the loads shared by them, (where Eb and Ec are their modulii)____________________? |
| A. | b c = Eb /Ec |
| B. | P = Pb + Pc |
| C. | P = Ab b + Ac b |
| D. | All the above |
| Answer» E. | |
| 155. |
constant, depth of a cantilever of length of uniform strength loaded with Keeping breadth uniformly distributed load varies from zero at the free end and________________? |
| A. | 2w w l at the fixed end |
| B. | l) at the fixed end |
| C. | w l) at the fixed end |
| D. | 3w l at the fixed end |
| Answer» C. w l) at the fixed end | |
| 156. |
Co-efficient of wind resistance of a circular surface, is________________? |
| A. | 1/2 |
| B. | 1/3 |
| C. | 2/3 |
| D. | 3/2 |
| Answer» D. 3/2 | |
| 157. |
Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as________________? |
| A. | Compound beams |
| B. | Indeterminate beams |
| C. | Determinate beams |
| D. | Composite beams |
| Answer» E. | |
| 158. |
At yield point of a test piece, the material__________________? |
| A. | Obeys Hooke’s law |
| B. | Behaves in an elastic manner |
| C. | Regains its original shape on removal of the load |
| D. | Undergoes plastic deformation |
| Answer» E. | |
| 159. |
At its elastic limit, the following statement is true, 0/E__________________? |
| A. | Strain is equal to |
| B. | Maximum shear stress = /2 |
| C. | Strain energy = 0 |
| D. | 0²/2E × volume |
| E. | All the above |
| Answer» F. | |
| 160. |
At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of the section by_________________? |
| A. | Depth of the section |
| B. | Depth of the neutral axis |
| C. | Maximum tensile stress at the section |
| D. | Maximum compressive stress at the section |
| Answer» C. Maximum tensile stress at the section | |
| 161. |
An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is_________________? |
| A. | Wa/h |
| B. | Wa/2h |
| C. | 2W/ha |
| D. | 2h/Wa |
| Answer» C. 2W/ha | |
| 162. |
a uniform circular bar of diameter d and length , which extends by an The deflection of amount under a tensile pull , when it carries the same load at its mid-span, is___________________? |
| A. | el/2d |
| B. | e²l/3d² |
| C. | el²/3d² |
| D. | e²l²/3d² |
| Answer» D. e²l²/3d² | |
| 163. |
A two hinged parabolic arch of span l and rise h carries a load varying from zero at the left end to________________? |
| A. | /4h thrust is |
| B. | /8h |
| C. | /12h |
| D. | /16h |
| Answer» E. | |
| 164. |
A truss containing j joints and m members, will be a simple truss if_________________? |
| A. | m = 2j – 3 |
| B. | j = 2m – 3 |
| C. | m = 3j – 2 |
| D. | j = 3m – 2 |
| Answer» B. j = 2m – 3 | |
| 165. |
A three hinged arch is generally hinged at its supports and__________________? |
| A. | At one quarter span |
| B. | At the crown |
| C. | Anywhere in the rib |
| D. | None of these |
| Answer» D. None of these | |
| 166. |
A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2 MN/mm2, the tensile force developed at a temperature of 50°C, is_________________? |
| A. | 80 N/mm2 |
| B. | 100 N/mm 2 |
| C. | 120 N/mm2 |
| D. | 150 N/mm2 |
| Answer» D. 150 N/mm2 | |
| 167. |
A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm2, the side of the rod, is_________________? |
| A. | 1 cm |
| B. | 1.5 cm |
| C. | 2 cm |
| D. | 2.5 cm |
| Answer» D. 2.5 cm | |
| 168. |
A steel plate d × b is sandwiched rigidly between two timber joists each D × B/2 in section. The steel will be (where Young’s modulus of steel is m times that of the timber)_________________? |
| A. | BD² + mbd²)/6D] |
| B. | BD3 + mbd3)/6D] |
| C. | BD² + mbd3)/4D] |
| D. | BD² + mbd²)/4D] |
| Answer» C. BD² + mbd3)/4D] | |
| 169. |
A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm2 and Poisson’s ratio is 0.25, the change in the volume of the bar is_________________? |
| A. | 1.125 cm3 |
| B. | 2.125 cm3 |
| C. | 3.125 cm3 |
| D. | 4.125 cm2 |
| Answer» D. 4.125 cm2 | |
| 170. |
A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at its centre. If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is___________________? |
| A. | 411 N mm |
| B. | 511 N mm= |
| C. | 611 N mm |
| D. | 711 N mm |
| Answer» D. 711 N mm | |
| 171. |
A square column carries a load P at the centroid of one of the quarters of the square. If a is the side of the main square, the combined bending stress will be________________? |
| A. | p/a² |
| B. | 2p/a² |
| C. | 3p/a² |
| D. | 4p/a² |
| Answer» D. 4p/a² | |
| 172. |
A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is_____________? |
| A. | 25 N |
| B. | 30 N |
| C. | 35 N |
| D. | 40 N |
| Answer» D. 40 N | |
| 173. |
A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm². If the slope at the ends is 0.005 radian and the value of E = 0.2 × 106 N/mm2, the depth of the joist, is________________? |
| A. | 200 mm |
| B. | 250 mm |
| C. | 300 mm |
| D. | 400 mm |
| Answer» E. | |
| 174. |
A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is________________? |
| A. | L/d |
| B. | L/2d |
| C. | (L/2d)² |
| D. | (L/3d)² |
| Answer» D. (L/3d)² | |
| 175. |
A simply supported beam which carries a uniformly distributed load has two equal overhangs. To have maximum B.M. produced in the beam least possible, the ratio of the length of the overhang to the total length of the beam, is_________________? |
| A. | 0.207 |
| B. | 0.307 |
| C. | 0.407 |
| D. | 0.508 |
| Answer» B. 0.307 | |
| 176. |
A simply supported beam carries varying load from zero at one end and w at the other end. If the length of the beam is a, the maximum bending moment will be_______________? |
| A. | wa/27 |
| B. | wa²/27 |
| C. | w²a |
| D. | wa² |
| Answer» E. | |
| 177. |
A simply supported beam carries a varying load from zero at one end and w at the other end. If the length of the beam is a, the shear force will be zero at a distance x from least loaded point where x is_________________? |
| A. | a/2 |
| B. | a/3 |
| C. | a/√3 |
| D. | a/4 |
| Answer» D. a/4 | |
| 178. |
A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be________________? |
| A. | 2/3 |
| B. | 3/2 |
| C. | 5/8 |
| D. | 8/5 |
| Answer» E. | |
| 179. |
A short column (30 cm × 20 cm) carries a load P 1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be_________________? |
| A. | 2/3 |
| B. | 3/2 |
| C. | 8/5 |
| D. | 5/8 |
| Answer» D. 5/8 | |
| 180. |
A shaft subjected to a bending moment M and a torque T, experiences__________________? |
| A. | Maximum bending stress = 32M d3 |
| B. | Maximum shear stress = 16 T d3 |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 181. |
A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is____________________? |
| A. | M/T |
| B. | T/M |
| C. | 2M/ T |
| D. | 2T/M |
| Answer» D. 2T/M | |
| 182. |
A shaft rotating N.R.M. under a torque T, transmits a power_______________? |
| A. | /30 Newton metres/sec |
| B. | /30 Newton metres/min |
| C. | /60 Newton metres/min |
| D. | /60 Newton metres/sec |
| Answer» B. /30 Newton metres/min | |
| 183. |
A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joist will be________________? |
| A. | 10 m |
| B. | 12 m |
| C. | 14 m |
| D. | 16 m |
| Answer» E. | |
| 184. |
A road of uniform cross-section A and length L force P. The Young’s Modulus E of the material, is_________________? |
| A. | E = /A. L |
| B. | E =/P. L |
| C. | E = P. L/ |
| D. | E = P. A/ |
| Answer» D. E = P. A/ | |
| 185. |
A rectangular column shown in the given figure carries a load P having eccentricities ex and ey along X and Y axes. The stress at any point (x, y) is_______________? |
| A. | (p/bd) [1 + (12ey. y/d²) + (12ex. x/d²)] |
| B. | p [1 + (6ey. y/b) + (6ex. x/ b)] |
| C. | (p/bd) [1 + (6ey. y/d) + (6ex. x/b)] |
| D. | (p/bd) [1 + (ey. y/d) + ( ex. x/d)] |
| Answer» B. p [1 + (6ey. y/b) + (6ex. x/ b)] | |
| 186. |
A material may fail if______________? |
| A. | 0 |
| B. | Maximum strain exceeds /E |
| C. | 0/2 |
| D. | Maximum shear stress exceeds |
| E. | All the above |
| Answer» F. | |
| 187. |
A material is said to be perfectly elastic if__________________? |
| A. | It regains its original shape on removal of the load |
| B. | It regains its original shape partially on removal of the load |
| C. | It does not regain its original shape at all |
| D. | None of these |
| Answer» B. It regains its original shape partially on removal of the load | |
| 188. |
A masonry dam (density = 20,000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be_______________________? |
| A. | 75 N/m2 |
| B. | 750 N/m 2 |
| C. | 7500 N/m 2 |
| D. | 75000 N/m2 |
| Answer» D. 75000 N/m2 | |
| 189. |
A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is________________? |
| A. | 4.0 mm |
| B. | 4.5 mm |
| C. | 5.0 mm |
| D. | 5.5 mm |
| Answer» D. 5.5 mm | |
| 190. |
A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is_______________? |
| A. | [W (1 + f/ G)]/ A |
| B. | (1 – g/f)/A |
| C. | [W (2 + f/G)]/A |
| D. | [W (2 + g/f)]/A |
| Answer» B. (1 – g/f)/A | |
| 191. |
A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, is______________? |
| A. | /6 |
| B. | /2 |
| C. | /3 |
| D. | /4 |
| Answer» C. /3 | |
| 192. |
A compound truss may be formed by connecting two simple rigid frames, by_________________? |
| A. | Two bars |
| B. | Three bars |
| C. | Three parallel bars |
| D. | Three bars intersecting at a point |
| Answer» C. Three parallel bars | |
| 193. |
A compound bar consists of two bars of equal length. Steel bar cross -section is 3500 mm2and that of brass bar is 3000 mm2. These are subjected to a compressive load 100,000 N. If Eb = 0.2 MN/mm2 and Eb = 0.1 MN/mm2, the stresses developed are___________________? |
| A. | b = 10 N/mm2 s = 20 N/mm 2 |
| B. | b = 8 N/mm2 s = 16 N/mm2 |
| C. | b = 6 N/mm2 s = 12 N/mm2 |
| D. | b = 5 N/mm2 s = 10 N/mm2 |
| Answer» B. b = 8 N/mm2 s = 16 N/mm2 | |
| 194. |
A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised___________________? |
| A. | Steel experiences tensile force |
| B. | Brass experiences compressive force |
| C. | Composite beam gets subjected to a couple |
| D. | All the above |
| Answer» E. | |
| 195. |
A close coil helical spring when subjected to a moment M having its axis along the axis of the helix_________________? |
| A. | It is subjected to pure bending |
| B. | Its mean diameter will decrease |
| C. | Its number of coils will increase |
| D. | All the above |
| Answer» B. Its mean diameter will decrease | |
| 196. |
A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is______________? |
| A. | 4WD²n/d4N |
| B. | 4W²Dn/d4N |
| C. | 4W²D3n/d4N |
| D. | 4W²D3n²/d4N |
| Answer» D. 4W²D3n²/d4N | |
| 197. |
A cantilever of length is subjected to a bending moment at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is_________________? |
| A. | ML/EI |
| B. | ML/2EI |
| C. | ML²/2EI |
| D. | ML²/3EI |
| Answer» E. | |
| 198. |
A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 × 106 N/mm2, the deflection of the free end, is________________? |
| A. | 2 mm |
| B. | 3 mm |
| C. | 4 mm |
| D. | 5 mm |
| Answer» E. | |
| 199. |
A body is said to be in equilibrium if___________________? |
| A. | It moves horizontally |
| B. | It moves vertically |
| C. | It rotates about its C.G. |
| D. | None of these |
| Answer» E. | |
| 200. |
A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is_________________? |
| A. | WL/2AE |
| B. | WL/AE |
| C. | W²L/AE |
| D. | W²L/2AE |
| Answer» E. | |