DDA JE Civil Paper 28 March 2023 Shift 2 Part 3

Q62. Consider the below statements with respect to the properties of asbestos and identify the correct answer.
Statement A: Asbestos has low heat conductivity.
Statement B: Asbestos is highly resistant to acids.

1. Both statements are incorrect.
2. Both statements are correct.
3. Statement A is correct, and statement B is incorrect.
4. Statement B is correct, and statement A is incorrect.

Correct Option: 3

DDA JE Civil Paper 28 March 2023 Shift 2 Part 3

Q63. Water is flowing through a pipe having diameters 150 mm and 100 mm at the bottom and upper ends, respectively. Calculate the kinetic head of water at the upper end if the flow velocity at the upper end is 0.5 m/s. Consider the acceleration due to gravity to be 10 m/s2.

1. 50 mm
2. 12.5 mm
3. 25 mm
4. 75 mm

Correct Option: 2

Q.64 Calculate the combined correction for curvature and refraction to be applied in a survey work (levelling) for a distance of 6000 m.

1. 2.42 m
2. 3.24 m
3. 1.45 m
4. 0.72 m

Correct Option: 1

Q.65 Which of the following is NOT a temporary adjustment made in the theodolite survey?

1. Orienting of the instrument towards magnetic north
2 Levelling of the instrument
3. Set out instrument over the station
4. Parallax elimination

Correct Option: 1

Q.66 Brick earth should contain about
of silica.

1. 5%-7%
2. 50%-60%
3. 15%-20%
4. <10%

Correct Option: 2

DDA JE Civil Paper 28 March 2023 Shift 2 Part 3

Q.67 As per IS 456-2000, the maximum cross-sectional area of tension reinforcement in a reinforced cement concrete beam of size 200 x 450 mm shall NOT exceed Consider the limit state method.

1- 4800 mm2
2. 1800 mm2
3. 2200 mm2
4- 3600 mm2

Correct Option: 4

Q.68 In the case of Portland Pozzolana cement, which of the following products of hydration of cement is involved in secondary hydration with pozzolanic materials?

1. Calcium hydroxide
2. Calcium silicate
3. Calcium aluminate
4. Calcium carbonate

Correct Option: 1

Q.69 The decomposition of felled timber due to the action of various fungi is called

1. rind gall
2. charring
3. dry rot
4. heart shake

Correct Option: 3

Q.70 Which of the following sewer types has the highest resistance to sulphide corrosion?

1. Hume steel pipe sewer
2. Cast iron sewer
3. Reinforced cement concrete sewer
4. Vitrified clay sewer

Correct Option: 4

DDA JE Civil Paper 28 March 2023 Shift 2 Part 3

Q.71 Calculate the pressure at a point that is at 5 m from the free surface of the liquid having a density of 1.5 × 103 kg/m3. Consider acceleration due to gravity to be 10 m/s2.

1. 7500 N/m2
2. 750 N/m2
3. 75,000 N/m2
4-7,50,000 N/m2

Correct Option: 3

Q.72 Common sugar is an example for

1. retarding admixture
2. accelerating admixture
3. plasticisers
4. super plasticisers

Correct Option: 1

Q74. Consider the below statements with respect to water distribution by the grid iron system and identify the correct answer. Statement A: Water is kept in good circulation due to the absence of dead ends.
Statement B: In the cases of a breakdown in some sections, water is not available from any other section.

1. Statement B is correct, and statement A is incorrect.
2. Both statements are correct.
3. Both statements are incorrect.
4. Statement A is correct, and statement B is incorrect.

Correct Option: 4

DDA JE Civil Paper 28 March 2023 Shift 2 Part 3

Q.75 The shape of the shear force diagram of a simply supported beam subjected to a uniformly varying load is

1. linear
2. semi-circular
3. parabolic
4. cubic parabolic

Correct Option: 3

Q.77 Identify the correct statement with respect to a Francis turbine.

1. A Pelton wheel turbine is an axial flow reaction turbine.
2. A Pelton wheel turbine is a radial flow impulse turbine.
3. A Pelton wheel turbine is a radial flow reaction turbine.
4. A Pelton wheel turbine is a tangential flow impulse turbine.

Correct Option: 4

DDA JE Civil Paper 28 March 2023 Shift 2 Part 3

Q78. Consider below statements with respect to the compaction of soil and identify the correct answer.
Statement A: Fine-grained soils attain a much higher density and lower optimum water content when compared with well-graded coarse-grained soils.
Statement B: The compacted density of soil increases as water content increases till a maximum dry density is achieved.

1. Statement A is correct, and statement B is incorrect.
2. Both statements are incorrect.
3. Both statements are correct.
4. Statement B is correct, and statement A is incorrect.

Correct Option: 4

Q79. Consider the below statements with respect to compass surveying and identify the correct answer. Statement A: A surveyor compass works on the principle of magnetism and used magnetic needle. Statement B: The sum of included angles in a closed traverse set by a compass is always equal to 360°.

1. Both statements are correct.
2. Statement A is correct, and statement B is incorrect.
3. Statement B is correct, and statement A is incorrect.
4. Both statements are incorrect.

Correct Option: 2