DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.31 Identify the INCORRECT statement with respect to concrete making.

1. The separation of ingredients of concrete is termed as segregation of concrete
2. Bleeding of concrete reduces the possibility of laitance formation on concrete surface
3. Machine mixing is more efficient than hand mixing
4. Weigh batching is more precise compared to volume batching in making concrete

Correct Option: 2

Q.32 Calculate the modulus of rigidity for an alloy body if its modulus of elasticity is found to be 200 Gpa. Consider that the Poisson’s ratio of tested material is 0.25.

1. 120 GPa
2. 80 GPa
3. 100 GPa
4. 600 GPa

Correct Option: 2

Q.33 Which of the following laboratory tests is NOT used to determine the shearing resistance of soil?

1. Recuperation test
2. Unconfined compression test
3. Direct shear test
4. Vane shear test

Correct Option: 1

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.34 As per IS soil classification, which of the following symbols is used for poorly graded or gravelly sands?

1. SP
2. SC
3. GP
4. MH

Correct Option: 1

Q.35 As per IS 456: 2000, nominal cover to reinforcement in reinforced concrete structures, to meet the durability requirements in extreme exposure conditions shall not be less than

1. 75 mm
2. 50 mm
3. 15 mm
4. 25 mm

Correct Option: 1

Q.36 The water content in a natural soil deposit is found to be 15%, calculate the degree of saturation if its void ratio is 0.50. Consider that the specific gravity of soil is 2.7.

1. 81%
2. 98%
3. 92%
4.75%

Correct Option: 1

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.38 A Pelton wheel turbine is a

1. radial flow impulse turbine
2. tangential flow reaction turbine
3. radial flow reaction turbine
4. tangential flow impulse turbine

Correct Option: 4

Q.39 The self-cleansing velocity of a sewer with a diameter of 30 cm to 60 cm is:

1. 45 cm/sec
2. 55 cm/sec
3. 65 cm/sec
4. 75 cm/sec

Correct Option: 4

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.40 Which of the following structures is classified as a statically indeterminate structure?

1. Three hinged arch
2. Propped cantilever beam
3. Cantilever beam
4. Overhanging beam with one hinged support and another roller support

Correct Option: 2

Q.42 A circular shaft of 40 mm diameter is required to transmit torque from one shaft to another. Find the safe torque, which the shaft can transmit if the shear stress is not to exceed 32Mpa.

1. 2.56 × 105 N-mm
2. 1.28 x 105 N-mm
3. 2.25 x 105 N-mm
4. 0.75 x 105 N-mm

Correct Option: 2

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q44.As per IS 10262: 2019, the required water content per cubic metre of concrete for the nominal maximum size of aggregate for the desired workability (other than 50 mm slump) may be increased or decreased by about each increase or decrease of 25 mm slump.

1. 10%
2. 5%
3.1%
4. 3%

Correct Option: 4

Q.45_____are manufactured by using lignocellulose materials, which are agglomerated, formed and pressed together by the use of an organic binder together in the presence of heat, pressure or moisture.

1. Veneers
2. Particle boards
3. Plywood
4. Block boards

Correct Option: 2

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q46. Consider the below statements with respect to unit operations employed in water treatment and identify the correct
answer.
Statement A: Objectionable gases such as carbon dioxide, hydrogen sulphide and other volatile odorous substances present in water can be removed by the bubble aeration technique.
Statement B: Chemical coagulation technique removes the suspended and colloidal impurities present in water.

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

Correct Option: 2

Q.47 Which of the following is NOT the role expected by fine aggregate in concrete?

1. Fill the voids between coarse aggregates
2. Make the concretes stiff and dense
3. React with cement to form calcium silicate hydrate gel
4. Improve workability of concrete

Correct Option: 3

Q.48 Which of the following expressions is correct to calculate the correction for curvature (C) in levelling? Where, d is the distance sighted (measured in km).

1. C2 = 0.6782d2 m
2. C2 = 0.5459d2 m
3. C2 = 0.07849d2 m
4. C2 = 0.02498d2 m

Correct Option: 3

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.49 A bar of length 2.5 m is subjected to an axial pull of 200 KN, if the change in length due to the applied load is 5 mm, calculate the linear strain experienced by the bar in the direction of the applied load.

1. 0.00725
2. 0.002
3. 0.25
4. 0.0250

Correct Option: 2

Q.50 According to IS 10262:2019, the approximate amount of entrapped air to be expected in normal (non-air-entrained) concrete is of volume of concrete, if the nominal maximum size of aggregate used in concrete is 10 mm.

1. 0.50%
2 2%
3. 1.50%
4. 1%

Correct Option: 3

Q51. Which of the following minor losses in pipe flow is taken as 2g? Where V is the velocity of liquid in a pipe…

1. Loss of head at the exit of the pipe
2. Loss of head due to obstruction in a pipe
3. Loss of head due to friction
4. Loss of head at the entrance of a pipe with sharp cornered entrance

Correct Option: 1

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q52. Two columns C1 and C2 spaced 3 m centre to centre, are subjected to axial loads of 600 KN and 800 KN, respectively. If good soil for the foundation with safe bearing capacity as 200 kN/m2, is available at 2 m depth below the ground level, identify the type of foundation which is suitable and economical. Assume the width of footing is restricted to 2 m.

1. Grillage foundation
2. Isolated footing
3. Mat foundation
4. Pile foundation

Correct Option: 2

Q.53 Which of the following is NOT the effect of cold weather concreting?

1. Freezing of water contained in the plastic concrete
2. Delayed hardening of concrete
3. Reduced rate of hydration of cement
4. Increased heat of hydration due to rapid hardening of cement

Correct Option: 4

Q.54 Calculate the specific gravity of a liquid if its density is 830 kg/m3. Take density of water as 1000 kg/m3.

1. 1.320
2. 0.814
3. 0.830
4. 1.200

Correct Option: 3

Q.55 The direction of a line AB measured in whole circle bearing system is found to be 105°30′, the direction of the same line in quadrantal bearing system is

1. S 105°30′ W
2. N 15°30’E
3. S 74°30′ E
4. N 285°30′ W

Correct Option: 3

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.56 As per IS 2386(Part IV)-1963, for the determination of aggregate impact value, the free fall height of metal hammer of weight 13.5 to 14 kg is

1. 330(+/-)5 mm
2. 250(+/-)5 mm
3. 380(+/-)5 mm
4. 150(+/-)5 mm

Correct Option: 3

Q.58 Cross sections, which can develop the plastic moment of resistance, but have inadequate plastic hinge rotation capacity for the formation of a plastic mechanism before buckling are classed as:

1. compact sections
2. slender sections
3. semi compact sections
4. plastic sections

Correct Option: 1

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

Q.59 Identify the INCORRECT statement with respect to the wastewater carriage system.

1. The sewage in the separate system will be of more uniform character, and so will lend itself more easily to putrification.
2. The large size of sewers is required in the combined system when compared to a separate system.
3. The load on the treatment plant is less in the combined system when compared to a separate system.
4. Chances of chocking are less in the combined system when compared to a separate system.

Correct Option: 3

Q60. The inverted staff reading (back sight) taken at the soffit of a cantilever beam point A is 2.065m. The staff reading at point B (fore sight) with normally held staff is 1.250 m. The RL of point B is Take reduced level at point A as 100 m.

1. 100.815 m
2. 97.935 m
3. 99.185 m
4. 96.685 m

Correct Option: 4

DDA JE Civil Paper 1 April 2023 Shift 1 Part 2

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