MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 82 Mcqs, each offering curated multiple-choice questions to sharpen your Java knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
In the design of pre-stressed concrete structures, which of the following limit states will come under the serviceability limit states? |
| A. | Flexure and cracking |
| B. | Deflection and cracking |
| C. | Shear, deflection and cracking |
| D. | Shear and deflection |
| Answer» C. Shear, deflection and cracking | |
| 52. |
Modulus of elasticity of concrete, E is calculated using: |
| A. | \(\rm{E = 5000\sqrt{f_{ck}}}\) |
| B. | \(\rm{E = 500\sqrt{f_{ck}}}\) |
| C. | \(\rm{E = 50\sqrt{f_{ck}}}\) |
| D. | \(\rm{E = 5\sqrt{f_{ck}}}\) |
| Answer» B. \(\rm{E = 500\sqrt{f_{ck}}}\) | |
| 53. |
According to the working stress method, the modular ratio between steel and concrete is: |
| A. | \(\frac {280}{3\sigma cbc}\) |
| B. | \(\frac {280}{0.45\sigma cbc}\) |
| C. | \(\frac {280}{5\sigma cbc}\) |
| D. | \(\frac {250}{0.45\sigma cbc}\) |
| Answer» B. \(\frac {280}{0.45\sigma cbc}\) | |
| 54. |
For increasing the inflow of water to sub surface water reservoir: |
| A. | Intensity of the irrigation is reduced |
| B. | Intercepting drains are constructed |
| C. | Lining of canals is done |
| D. | Natural drainage of the area is improved |
| Answer» E. | |
| 55. |
Consider the singly reinforced beam shown in the figure below: At cross-section XX, which of the following statements is TRUE at the limit state? |
| A. | The variation of stress is linear and that of strain is non-linear |
| B. | The variation of strain is linear and that of stress is non-linear |
| C. | The variation of both stress and strain is linear |
| D. | The variation of both stress and strain is non-linear |
| Answer» C. The variation of both stress and strain is linear | |
| 56. |
If the channel index at an irrigation outlet is 5 / 3, “setting” of an orifice type outlet in order to have proportionality is |
| A. | 0.90 |
| B. | 0.67 |
| C. | 0.30 |
| D. | 0.15 |
| Answer» D. 0.15 | |
| 57. |
Design strength for M 25 concrete in direct compression, bending compression and flexural tension area, respectively. |
| A. | 10 MPa, 11.15 MPa and 3.5 MPa |
| B. | 25 MPa, 11.15 MPa and 3 MPa |
| C. | 10 MPa, 12.5 MPa and 3.5 MPa |
| D. | 25 MPa, 11.15 MPa and 2.57 MPa |
| Answer» B. 25 MPa, 11.15 MPa and 3 MPa | |
| 58. |
A certain RC structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS 456-2000 is |
| A. | More than M 20 |
| B. | More than M 20 and less than M 30 |
| C. | Not less than M 30 |
| D. | Less than M 45 and more than M 30 |
| Answer» D. Less than M 45 and more than M 30 | |
| 59. |
As per IS 456:2000, the maximum shear stress for M20 grade of concrete is: |
| A. | 1.0 N/mm2 |
| B. | 2.8 N/mm2 |
| C. | 1.8 N/mm2 |
| D. | 3.8 N/mm2 |
| E. | 3.3 N/mm2 |
| Answer» C. 1.8 N/mm2 | |
| 60. |
Effective moment of inertia for short term deflection of a reinforced concrete section does not depend on |
| A. | the maximum moment under the service load |
| B. | depth of the neutral axis |
| C. | breadth shrinkage strain of concrete |
| D. | ultimate shrinkage strain of concrete |
| Answer» D. ultimate shrinkage strain of concrete | |
| 61. |
As per IS 456 : 2000, the minimum beam width required for a reinforced concrete beam, for 2 hours of fire exposure is: |
| A. | 250 mm |
| B. | 200 mm |
| C. | 300 mm |
| D. | 150 mm |
| Answer» C. 300 mm | |
| 62. |
Due to shrinkage stresses simply supported beam having reinforcement only at the bottom tends to deflect |
| A. | downward |
| B. | upward |
| C. | downward or upward |
| D. | None of the above |
| Answer» B. upward | |
| 63. |
As per IS specifications, the nominal concrete cover for moderate exposure should not be less than _____. |
| A. | 20 mm |
| B. | 30 mm |
| C. | 45 mm |
| D. | 50 mm |
| Answer» C. 45 mm | |
| 64. |
A cube of concrete in comparison to a cylinder of concrete is expected to give compressive strength ________. |
| A. | less by 15 % |
| B. | less by 5% |
| C. | more by 5% |
| D. | more by 15% |
| Answer» E. | |
| 65. |
Minimum clear cover (in mm) to the main steel bars in a slab, beam, column, and footing respectively are |
| A. | 10, 15, 20, 25 |
| B. | 15, 25, 40, 50 |
| C. | 20, 25, 40, 50 |
| D. | 20, 35, 40, 75 |
| Answer» D. 20, 35, 40, 75 | |
| 66. |
Consider the following statements:1. Functions of reinforcement in reinforced soil and in reinforced concrete are comparable.2. The design of a geotextile reinforced wall is similar in principle to that of a reinforced earth wall.Which of the above statements is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 67. |
As per IS code provision the tolerance on placing of reinforcements in a structural member having effective depth more than 200 mm shall be: |
| A. | ± 25 mm |
| B. | ± 20 mm |
| C. | ± 15 mm |
| D. | ± 10 mm |
| Answer» D. ± 10 mm | |
| 68. |
As per IS code, for pre-tensioning the total residual shrinkage strain is: |
| A. | 3 × 10-4 |
| B. | 2 × 10-4 |
| C. | 6 × 10-4 |
| D. | 2.5 × 10-5 |
| E. | 5.5 × 10-5 |
| Answer» B. 2 × 10-4 | |
| 69. |
In the context of provisions relating to durability of concrete, consider the following assertion:Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required forconcrete exposed to marine environment.Assertion (2): The equivalent alkali content (in terms of Na2O equivalent) for a cementcontaining 1% and 0.6% of Na2O and K2O respectively, is approximately 1.4% (rounded to 1decimal place).Which one of the following statements is correct? |
| A. | Assertion (1) is TRUE and Assertion (2) is FALSE |
| B. | Both Assertion (1) and Assertion (2) are TRUE |
| C. | Both Assertion (1) and Assertion (2) are FALSE |
| D. | Assertion (1) is FALSE and Assertion (2) is TRUE |
| Answer» E. | |
| 70. |
An irrigation project is classified as a major project, when the culturable command (in hectares) involved in the project is more than |
| A. | 2000 |
| B. | 5000 |
| C. | 7500 |
| D. | 10000 |
| E. | 15000 |
| Answer» E. 15000 | |
| 71. |
According to IS 1343, the flexural strength of a concrete member having a measured compressive strength of 50 MPa will approximately be equal to |
| A. | 5 MPa |
| B. | 7 MPa |
| C. | 7.5 MPa |
| D. | 10 MPa |
| E. | 4.5 MPa |
| Answer» B. 7 MPa | |
| 72. |
How is the deflection in RC beams controlled as per IS:456 |
| A. | By using large aspect ratio |
| B. | By using small modular ratio |
| C. | By controlling span to depth ratio |
| D. | By moderating water-cement ratio |
| Answer» D. By moderating water-cement ratio | |
| 73. |
A steel building has plan dimensions of 50 m × 50 m and it is 120 m tall. It is provided with brick infill panels. The approximate fundamental time period of the building is |
| A. | 1.53 sec |
| B. | 2.72 sec |
| C. | 3.08 sec |
| D. | 4.15 sec |
| Answer» B. 2.72 sec | |
| 74. |
In a limit state method the maximum strain allowed in axial compression concrete of a beam as per IS code is: |
| A. | 0.02 |
| B. | 0.002 |
| C. | 0.003 |
| D. | 0.0035 |
| Answer» C. 0.003 | |
| 75. |
In a low cost housing project of G + 2 storey, it was decided to ignore the effects due to temperature fluctuations, shrinkage and creep. For this to be satisfied, the lateral dimension of the building should be less than |
| A. | 30 m |
| B. | 25 m |
| C. | 45 m |
| D. | 50 m |
| E. | 40 m |
| Answer» D. 50 m | |
| 76. |
As per IS 456:2000 recommendations, the latest time by which the formwork can be removed from columns, walls and beams is given by which of the following choices? |
| A. | 10 hours |
| B. | 12 hours |
| C. | 16 hours |
| D. | 15 hours |
| Answer» D. 15 hours | |
| 77. |
As per IS:456-2000, the nominal concrete cover in mm for “severe durability of concrete” is_____. |
| A. | 45 |
| B. | 50 |
| C. | 30 |
| D. | 20 |
| Answer» B. 50 | |
| 78. |
As per IS:456 the value of strain at outermost tension fiber is _____ |
| A. | 0.0035 + (fy/1.15 Es) |
| B. | 0.0035 + (fy/1.5 Es) |
| C. | 0.002 + (fy/1.15 Es) |
| D. | 0.002 + (fy/1.5 Es) |
| Answer» D. 0.002 + (fy/1.5 Es) | |
| 79. |
Characteristics load means that value of load which has a _______ % probability of not being exceeded during the life of structure. |
| A. | 5 |
| B. | 20 |
| C. | 95 |
| D. | 98 |
| E. | 99 |
| Answer» D. 98 | |
| 80. |
In normal circumstances where ambient temperature does not fall below 15°C, for a properly cured reinforced concrete slabs spanning up to 4.5 metre span cast using ordinary Portland cement, the props provide can be removed only after a minimum period of |
| A. | 3 days |
| B. | 7 days |
| C. | 14 days s |
| D. | 21 days |
| Answer» C. 14 days s | |
| 81. |
Which of the following is a method having same name as that of it’s class?$ |
| A. | finalize |
| B. | delete |
| C. | class |
| D. | constructor |
| Answer» E. | |
| 82. |
What is the return type of a method that does not return any value? |
| A. | int |
| B. | float |
| C. | void |
| D. | double |
| Answer» D. double | |