DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.31 Which of the following is a characteristic of Mohr’s circle in determining the shear strength of soil?

1. The maximum shear strength is equal to (Major principal stress + Minor principal stress) × 2 and occurs on a plane inclined at 45° to the minor principal plane.
2 The maximum shear strength is equal to (Major principal stress × Minor principal stress) +and occurs on a plane inclined at 45° to the minor principal plane.
3 The maximum shear strength is equal to (Major principal stress + Minor principal stress) + 2 and occurs on a plane inclined at 45° to the major principal plane.
4The maximum shear strength is equal to (Major principal stress – Minor principal stress) + 2 and occurs on a plane inclined at 45° to the major principal plane.

Correct Option: 4

Q.32 Select the INCORRECT pair of the match with regard to the constituents of paint.

1. Solvents – Litharge
2. Driers – Petroleum
3. Pigment – Lithophone
4. Base White lead

Correct Option: 1

Q33. Arrange the following drinking water treatment components in a sequential order.

1. Sedimentation
2. Aeration
3. Filtration
4. Disinfection
1.2-1-3-4
21-2-3-4
3. 1-4-2-3
4. 1-3-2-4

Correct Option: 1

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.35 What is the degree of workability of concrete having a slump value of 100-150 mm when placing in situ piling as
per IS 456-2000?

1. Low
2. Very high
3. High
4. Medium

Correct Option: 3

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.37 The maximum hourly demand of water per head is equal to:

1. 1.28 × annual average monthly demand of water
2. the annual average monthly demand of water
3. 2.7 × annual average hourly demand of water per head
4. 1.8 × annual average daily demand of water

Correct Option: 3

Q38. Select the correct option from the following with regard to the slump test of concrete.

1. A slump cone measures 100 mm (top diameter), 200 mm (bottom diameter) and 350 mm (height).
2. The slump test helps in qualitatively understanding the setting time of concrete.
1. Both are correct.
2. Statement 1 is correct, and statement 2 is incorrect.
3. Both are incorrect.
4. Statement 1 is incorrect, and statement 2 is correct.

Correct Option: 3

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.41 Which of the following pozzolanic materials may be used as a partial replacement for cement?

1. Rice husk
2. Volcanic eruption
3. Metakaolin
4. Mining tailing

Correct Option: 3

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q42. Select the correct option with regard to effective stress on soils.
Statement 1: As effective stress on soil increases, the compaction of soil occurs and causes the settlement of structures built on soils.
Statement 2: The shear strength of soil depends on its effective stress, and as effective stress is changed, the shear strength remains constant.

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

Correct Option: 3

Q.43 The soils have been classified into 18 groups in the Indian soil classification system. Select the option that correctly presents the groups.
1. 8 groups of coarse-grained, 9 groups of fine-grained and 1 group of peat
2. 10 groups of coarse-grained, 7 groups of fine-grained and 1 group of peat
3. 11 groups of coarse-grained, 5 groups of fine-grained and 2 groups of peat
4. 12 groups of coarse-grained, 5 groups of fine-grained and 1 group of peat

Correct Option: 1

Q.45 Darcy’s law for the flow to be laminar through soils is valid if the Reynold number is:

1. greater than 4000
2. less than unity
3. less than 500
4. less than 2000

Correct Option: 2

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.46 The manometric efficiency of a centrifugal pump is defined as the ratio of:

1. manometric head to the head imparted by the impeller to the water
2 suction head to the head imparted by the impeller to the water
3. head imparted by the impeller to water to the suction head
4. head imparted by the impeller to the water to the manometric head

Correct Option: 1

Q.47 Which of the following is NOT an advantage of plywood?

1. It has weaker splitting resistance due to the grains at the edges.
2. The wood shrinks or swells more across the grains.
3. It has good strength both along as well as across the grains.
4. Plywood can be curved into desired shapes.

Correct Option: 1

Q48. Select the correct option with regard to compression members.
Statement 1: For very short compression steel members, the failure stress will equal the yield stress and buckling will occur.
Statement 2: For long compression steel members, the Euler formula predicts the strength very well, where the axial buckling stress remains below the proportional limit.

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

Correct Option: 4

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.49 The flow is said to be laminar in an open channel when the Reynold number is:

1. less than 500
2. less than 2000
3. less than unity
4. greater than 2000

Correct Option: 1

Q.50 Which of the following is NOT an assumption made in Bernoulli’s principle?

1. The flow is steady and continuous.
2. The flow is incompressible.
3. The flow is rotational.
4. The fluid is ideal.

Correct Option: 3

Q51 Select the correct option with regard to consolidation.
Statement 1: The process of expulsion and compression of water in the voids by reducing volume occurs in the initial consolidation when the load is applied to a partially saturated soil.
Statement 2: The process of expulsion of air from the voids, which results in further reduction of volume, occurs in the primary consolidation of soils.

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

Correct Option: 3

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.53 The SI unit for the dynamic viscosity of fluid is:

1. Newton-second per square metre (N-s/m2)
2. Square metre per second (m2/s)
3. Newton per square metre (N/m2)
4. Newton-metre per second (N-m/s)

Correct Option: 1

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.57 Select the INCORRECT pair of matches with regard to the type of asphalts.
1. Mastic asphalt – It is the pitch residue obtained by the evaporation of the volatile constituent of coal tar.
2. Liquid asphalt – It is the viscous residue obtained by the distillation of asphaltic base crude oil.
3. Cut-back asphalt – It is derived by the distillation of asphalt in a volatile solvent.
4. Refined asphalt – It is obtained by heating pitch to drive off the water and to draw off the mineral matter.

1. 2
2. 1
3. 4
4. 3

Correct Option: 2

DDA JE Civil Paper 29 March 2023 Shift 1 Part 2

Q.58 The principal constituent of silicious rock is:

1. clay
2. lime
3. slate
4. sand

Correct Option: 4

Q.59 Identify the given symbol used in chain surveying