MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 203 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The average permissible stress in bond for plain bars in tension is |
| A. | ncreased by 10% for bars in compression |
| B. | ncreased by 25% for bars in compression |
| C. | ecreased by 10% for bars in compression |
| D. | ecreased by 25% for bars in compression |
| Answer» C. ecreased by 10% for bars in compression | |
| 52. |
In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on |
| A. | ront face only |
| B. | nner face only |
| C. | oth front face and inner face |
| D. | one of the above |
| Answer» B. nner face only | |
| 53. |
A T-shaped retaining wall mainly conssits of |
| A. | ne cantilever |
| B. | wo cantilevers |
| C. | hree cantilevers |
| D. | our cantilevers |
| Answer» D. our cantilevers | |
| 54. |
In a spherical dome the hoop stress due to a concentrated load at crown is |
| A. | ompressive everywhere |
| B. | ensile everywhere |
| C. | artly compressive and partly tensile |
| D. | ero |
| Answer» C. artly compressive and partly tensile | |
| 55. |
For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be |
| A. | 00 mm |
| B. | 50 mm |
| C. | 00 mm |
| D. | ore than 1 m |
| Answer» E. | |
| 56. |
The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than |
| A. | 0.15 |
| B. | 0.12 |
| C. | 0.3 |
| D. | 0 |
| Answer» C. 0.3 | |
| 57. |
According to Whitney’s theory, ultimate strain of concrete is assumed to be |
| A. | .03% |
| B. | .1% |
| C. | .3% |
| D. | % |
| Answer» D. % | |
| 58. |
The percentage of voids in cement is approximately |
| A. | 5% |
| B. | 0% |
| C. | 0% |
| D. | 0% |
| Answer» C. 0% | |
| 59. |
In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by |
| A. | 0% |
| B. | 0% |
| C. | 0% |
| D. | 0% |
| Answer» E. | |
| 60. |
Ultimate strength of cold drawn high steel wires |
| A. | ncreases with increase in diameter of bar |
| B. | ecreases with increase in diameter of bar |
| C. | oes not depend on diameter of bar |
| D. | one of the above |
| Answer» C. oes not depend on diameter of bar | |
| 61. |
For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be |
| A. | .75 - 0.80 |
| B. | .80 - 0.85 |
| C. | .85 - 0.92 |
| D. | bove 0.92 |
| Answer» E. | |
| 62. |
If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called |
| A. | alanced beam |
| B. | nder-reinforced beam |
| C. | ver-reinforced beam |
| D. | one of the above |
| Answer» D. one of the above | |
| 63. |
According to IS: 456-1978, the column or the strut is the member whose effective length is greater than |
| A. | he least lateral dimension |
| B. | times the least lateral dimension |
| C. | times the least lateral dimension |
| D. | times the least lateral dimension |
| Answer» D. times the least lateral dimension | |
| 64. |
The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by |
| A. | cr – rcs = tct |
| B. | cr>fcs>fc. |
| C. | cr |
| D. | c5>fcr>fC |
| Answer» C. cr | |
| 65. |
The effect of adding calcium chloride in concrete isi) to increase shrinkageii) to decrease shrinkageiii) to increase setting timeiv) to decrease setting timeThe correct answer is |
| A. | i) and (iii) |
| B. | i)and(iv) |
| C. | ii) and (iii) |
| D. | ii) and (iv) |
| Answer» C. ii) and (iii) | |
| 66. |
In a counterfort retaining wall, the main reinforcement is provided on thei) bottom face in front counterfortii) inclined face in front counterfortiii) bottom face in back counterfortiv) inclined face in back counterEortThe correct answer is |
| A. | i) and (ii), |
| B. | ii) and (iii) |
| C. | i) and (iv) |
| D. | iii) and (iv) |
| Answer» D. iii) and (iv) | |
| 67. |
In order to obtain the best workability of concrete, the preferred shape of aggregate is |
| A. | ounded |
| B. | longated |
| C. | ngular |
| D. | ll of the above |
| Answer» B. longated | |
| 68. |
Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is |
| A. | 15 |
| B. | 20 |
| C. | 10 |
| D. | 25 |
| Answer» B. 20 | |
| 69. |
Which of the following has high tensile strength ? |
| A. | lain hot rolled wires |
| B. | old drawn wires |
| C. | eat treated rolled wires |
| D. | ll have same tensile strength |
| Answer» C. eat treated rolled wires | |
| 70. |
In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on |
| A. | he front face in one direction |
| B. | he front face in both directions |
| C. | he inner face in one direction |
| D. | he inner face in both directions |
| Answer» D. he inner face in both directions | |
| 71. |
A higher modular ratio shows |
| A. | igher compressive strength of con-crete |
| B. | ower compressive strength of concrete |
| C. | igher tensile strength of steel |
| D. | ower tensile strength of steel |
| Answer» C. igher tensile strength of steel | |
| 72. |
Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is |
| A. | 8 liters |
| B. | 0 liters |
| C. | 2 liters |
| D. | 4 liters |
| Answer» D. 4 liters | |
| 73. |
If the permissible stress in steel in tension is 140 N/mm², then the depth of neutral axis for a singly reinforced rectangular balanced section will be |
| A. | .35 d |
| B. | .40 d |
| C. | .45 d |
| D. | ependent on grade of concrete also |
| Answer» C. .45 d | |
| 74. |
The diameter of ties in a column should be |
| A. | ore than or equal to one fourth of diameter of main bar |
| B. | ore than or equal to 5 mm |
| C. | ore than 5 mm but less than one-fourth of diameter of main bar |
| D. | ore than 5 mm and also more than one-fourth of diameter of main bar |
| Answer» E. | |
| 75. |
If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section |
| A. | epends on as, only |
| B. | epends on aCbC only |
| C. | epends on both crst and acbc |
| D. | s independant of both ast and acbc where d is the effective depth, ast is per-missible stress in steel in tension and ocbc is permissible stress in concrete in bending compression. |
| Answer» B. epends on aCbC only | |
| 76. |
Critical section for shear in case of flat slabs is at a distance of |
| A. | ffective depth of slab from periphery of column/drop panel |
| B. | /2 from periphery of column/capital/ drop panel |
| C. | t the drop panel of slab |
| D. | t the periphery of column |
| Answer» C. t the drop panel of slab | |
| 77. |
The critical section for finding maximum bending moment for footing under masonry wall is located~! |
| A. | at the middle of the wall |
| B. | at the edge of the wall |
| C. | halfway between the middle and edge of the wall |
| D. | at a distance equal to effective depth of footing from the edge of the wall |
| Answer» D. at a distance equal to effective depth of footing from the edge of the wall | |
| 78. |
Finer grinding of cement%! |
| A. | affects only the early development of strength |
| B. | affects only the ultimate strength |
| C. | both (a) and (b) |
| D. | does not affect the strength |
| Answer» B. affects only the ultimate strength | |
| 79. |
The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is%! |
| A. | Not needed |
| B. | Provided equally on inner and front faces |
| C. | Provided more on inner face than on front face |
| D. | Provided more on front face than on inner face |
| Answer» E. | |
| 80. |
Due to circumferential action of the spiral in a spirally reinforced column%! |
| A. | Capacity of column is decreased |
| B. | Ductility of column reduces |
| C. | Capacity of column is decreased but ductility of column increases |
| D. | Both the capacity of column and ductility of column increase |
| Answer» E. | |
| 81. |
If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to%! |
| A. | xv |
| B. | xc |
| C. | |
| Answer» D. | |
| 82. |
Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?%! |
| A. | elastic shortening of concrete |
| B. | shrinkage of concrete |
| C. | creep of concrete |
| D. | loss due to friction |
| Answer» B. shrinkage of concrete | |
| 83. |
Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?%! |
| A. | elastic shortening of concrete |
| B. | shrinkage of concrete |
| C. | creep of concrete |
| D. | loss due to friction |
| Answer» B. shrinkage of concrete | |
| 84. |
*$_Bulking of sand is maximum if moisture content is about? |
| A. | 2 % |
| B. | 4 % |
| C. | 6 % |
| D. | 10 % |
| Answer» C. 6 % | |
| 85. |
*$_The depth of footing for an isolated column is governed byi) maximum bending momentii) shear forceiii) punching shear The correct answer is? |
| A. | only (i) |
| B. | (i) and (ii) |
| C. | (i) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» E. | |
| 86. |
*$_The percentage of voids in cement is approximately? |
| A. | 25% |
| B. | 40% |
| C. | 60% |
| D. | 80% |
| Answer» C. 60% | |
| 87. |
*$_In a spherical dome the hoop stress due to a concentrated load at crown is? |
| A. | compressive everywhere |
| B. | tensile everywhere |
| C. | partly compressive and partly tensile |
| D. | zero |
| Answer» C. partly compressive and partly tensile | |
| 88. |
*$_The minimum cover to the ties or spirals should not be less than? |
| A. | 15 mm |
| B. | 20 mm |
| C. | 25 mm |
| D. | 50mm |
| Answer» D. 50mm | |
| 89. |
*$_To determine the modulus of rupture, the size of test specimen used is? |
| A. | 150 x150 x500 mm |
| B. | 100 x100 x700 mm |
| C. | 150 x150 x700 mm |
| D. | 100 x100 x500 mm |
| Answer» D. 100 x100 x500 mm | |
| 90. |
*$_Maximum percentage reinforcement in case of slabs is limited to? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 91. |
*$_Poisson’s ratio for concrete? |
| A. | remains constant |
| B. | increases with richer mixes |
| C. | decreases with richer mixes |
| D. | none of the above |
| Answer» C. decreases with richer mixes | |
| 92. |
*$_The permissible diagonal tensile stress in reinforced brick work is? |
| A. | about 0.1 N/mm² |
| B. | zero |
| C. | 0.3 N/mm² to 0.7 N/mm² |
| D. | about 1.0 N/mm² |
| Answer» B. zero | |
| 93. |
*/*_Select the incorrect statement? |
| A. | The loss of prestress is more in pre-tensioning system than in post-tensioning system. |
| B. | Pretensioning system has greater certainty about its durability. |
| C. | For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system |
| D. | none of the above |
| Answer» E. | |
| 94. |
*/*_The effect of adding calcium chloride in concrete isi) to increase shrinkageii) to decrease shrinkageiii) to increase setting timeiv) to decrease setting timeThe correct answer is? |
| A. | (i) and (iii) |
| B. | (i)and(iv) |
| C. | (ii) and (iii) |
| D. | (ii) and (iv) |
| Answer» C. (ii) and (iii) | |
| 95. |
*/*_A higher modular ratio shows? |
| A. | higher compressive strength of con-crete |
| B. | lower compressive strength of concrete |
| C. | higher tensile strength of steel |
| D. | lower tensile strength of steel |
| Answer» C. higher tensile strength of steel | |
| 96. |
*/*_If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called? |
| A. | balanced beam |
| B. | under-reinforced beam |
| C. | over-reinforced beam |
| D. | none of the above |
| Answer» D. none of the above | |
| 97. |
*/*_Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is? |
| A. | M15 |
| B. | M20 |
| C. | M10 |
| D. | M25 |
| Answer» B. M20 | |
| 98. |
*/*_For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is? |
| A. | 50 mm |
| B. | 75 mm |
| C. | 100 mm |
| D. | 120 mm |
| Answer» C. 100 mm | |
| 99. |
*/*_As compared to ordinary portland cement, use of pozzuolanic cement? |
| A. | reduces workability |
| B. | increases bleeding |
| C. | increases shrinkage |
| D. | increases strength |
| Answer» D. increases strength | |
| 100. |
*/*_Prestress loss due to friction occurs? |
| A. | only in post-tensioned beams |
| B. | only in pretensioned beams |
| C. | in both post-tensioned and preten-sioned beams |
| D. | none of the above |
| Answer» B. only in pretensioned beams | |