## DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q31. A beam with a triangular cross-section is subjected to a shear force of 20 KN. Calculate the value of average shear stress if base width of the section is 200 mm and height is 100 mm.

1- 1.55 N/mm2

2. 2.45 N/mm2

3. 1.20 N/mm2

4. 2.00 N/mm2

Correct Option: 4

Q.33 Consider the given statements with respect to standards set for lap length and development length in RCC structures as per IS 456: 2000 specifications and identify the correct answer.

Statement A: Lap splices shall not be used for bars with diameter greater than 36 mm.

Statement B: Lap length in compression shall be always greater than development length in compression.

1. Both statements A and B are correct.

2. Statement A is correct but statement B is incorrect.

3. Both statements A and B are incorrect.

4. Statement B is correct but statement A is incorrect.

Correct Option: 3

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q34. Under working stress design method of concrete structures, calculate the modular ratio of M20 grade concrete subjected to compressive stress due to bending, if the permissible compressive stress for M20 grade concrete in bending is 7 N/mm2.

1. 7.56 N/mm2

2. 18.57 N/mm2

3. 13.33 N/mm2

4-16.72 N/mm2

Correct Option: 3

Q37. Consider the given statements with respect to Darcy’s Law on flow of water through soil and identify the correct

answer.

Statement A: The average velocity of flow that will occur through the total cross-sectional area of soil under unit hydraulic gradient is termed as coefficient of permeability.

Statement B: When hydraulic gradient is unity, Darcy’s coefficient of permeability is equal to velocity of flow.

1. Statement A is correct but statement B is incorrect.

2. Both statements A and B are incorrect.

3. Statement B is correct and but statement A is incorrect.

4. Both statements A and B are correct.

Correct Option: 4

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q38. Consider the given statements with respect to repetition method and identify the correct answer.

Statement A: Errors due to eccentricity of Vernier’s are eliminated by taking the mean of both Vernier readings.

Statement B: Errors due to inaccurate graduations cannot be eliminated by repetition method.

1. Statement B is correct but statement A is incorrect.

2. Both statements A and B are incorrect.

3. Statement A is correct but statement B is incorrect.

4. Both statements A and B are correct.

Correct Option: 3

Q.39 Consider the given statements with respect to fine aggregates (sand) used in construction and identify the correct

answer.

Statement A: Zone IV sand is coarse in nature when compared to Zone III sand.

Statement B: Size of fine aggregates fraction ranges from 4.75 mm to 75 micron.

1. Statement B is correct but statement A is incorrect.

2. Both statements A and B are incorrect.

3. Both statements A and B are correct.

4. Statement A is correct but statement B is incorrect.

Correct Option: 1

Q42. Consider the given statements with respect to artificial construction materials used in construction and identify the correct answer.

Statement A: Transparent glass can be made opaque by grinding the surface of glass using emery.

Statement B: Bulletproof glass is produced by placing vinyl plastic and glass in several alternate layers and pressing them with outer layers of glass.

1. Statement A is correct but statement B is incorrect.

2. Both statements A and B are correct.

3. Statement B is correct but statement A is incorrect.

4. Both statements A and B are incorrect.

Correct Option: 2

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q44. A circular rod with cross-sectional area 314.16 mm2 and section modulus 785.4 mm3 carries a pull of magnitude 50 KN along a line which is parallel to the centroidal axis with an eccentricity of 0.5 mm. Calculate the maximum stress caused if the direct stress is found to be 159.15 N/mm2 and compressive stress due to eccentricity is 31.83 N/mm2.

1- 190.98 N/mm2

2 45.425 N/mm2

3. 127.32 N/mm2

4-96.259 N/mm2

Correct Option: 1

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q.45 Consider the given statements with respect to specifications for autoclaved cellular (aerated) concrete blocks as per IS 2185 (part 3): 1984 and identify the correct answer.

Statement A: Autoclaved cellular (aerated) concrete blocks are used for both load bearing and non-load bearing internal walls.

Statement B: The maximum variation in the length of autoclaved cellular (aerated) concrete blocks shall not be more than (+/-) 5 mm.

1. Both statements A and B are correct.

2. Statement A is correct but statement B is incorrect.

3. Both statements A and B are incorrect.

4. Statement B is correct and but statement A is incorrect.

Correct Option: 1

Q.47 Find the torque which a shaft of 200 mm diameter can safely transmit, if the shear stress is NOT to exceed 50 N/mm2.

1- 12.5π x 106 N-mm

2. 25 × 106 N-mm

3.10л × 106 N-mm

4- 35 × 106 N-mm

Correct Option: 2

Q.48 In the analysis of structures, Euler’s formula holds good for

1. principal rafters in trusses

2. trusses with long span

3. squat columns

4. long columns

Correct Option: 4

Q.49 Which of the following is an example of Newtonian fluids?

1. Alcohol

2. Quicksand

3. Cheese

4. Toothpaste

Correct Option:1

Q.50 Which of the following beam systems has lower number of support reactions?

1. Fixed support beam

2. Continuous beam with three spans

3. Simply supported beam

4. Propped cantilever beam

Correct Option: 3

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q.51 The specific gravity of structural granite when tested according to IS 1121 (part I): 1974, shall NOT be less than

1. 3.2

2. 3.0

3.2.6

4. 2.8

Correct Option: 3

Q.52 Calculate Young’s Modulus of Elasticity of a material, whose bulk modulus is 50 GPa, modulus of rigidity is 30 GPa and Poisson’s ratio is 0.25.

1. 60 GPa

2. 75 GPa

3. 110 GPa

4. 90 GPa

Correct Option: 2

Q.53 A rectangular section of width (X-X) 200 mm and depth 400 mm (Y-Y) is to be provided as a beam. Calculate its moment of inertia with respect to a horizontal axis (X-X) passing through centroid of the said section.

1- 4.266 × 109 mm+

2 1.067 × 109 mm+

3. 2.058 × 109 mm+

4- 3.023 × 109 mm+

Correct Option: 2

Q.55 Which of the following building materials has comparatively lower specific gravity?

1. Cement

2. Water

3. Soil

4. Glass

Correct Option: 2

Q57. The critical section for two-way shear is located at a distance of

in case of design of an isolated footing as per

limit state method. Consider the effective depth of footing as 500 mm.

1. 100 mm from the face of column

2. 150 mm from the face of column

3. 300 mm from the face of column

4. 250 mm from the face of column

Correct Option: 4

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

Q.58 According to IS 1077: 1992, for common burnt clay building bricks ‘class 25’ the water absorption shall NOT be more per cent by weight.

than

1.15

2. 12

3. 25

4 .8

Correct Option: 1

Q.59 If an aggregate fraction passing through IS sieve size 50 mm and retained on 40 mm is said to be flaky, the least dimension of tested sample of aggregate shall be less than

1. 45 mm

2. 35 mm

3. 39 mm

4. 27 mm

Correct Option: 4

DDA JE Civil Paper 1 April 2023 Shift 3 Part 2

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