## DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q1 Which of the following types of glass is most suitable for making laboratory equipment and cooking utensils?

1. Borosilicate glass

2. Lead glass

3. Soda ash glass

4. Tint glass

Correct Option: 1

Q2 Identify the type of defect in timber due to abnormal growth shown in the figure (labelled as A).

1. Shakes

2. Checks

3. Rind galls

4. Foxiness

Correct Option: 3

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q.3 Which of the following conditions is correct for a statically indeterminate truss (internally) with ‘m’ number of two force members and “j” number of joints?

1m+3-3j

2. m+3>2j

3. m+3<2j

4. m+6>3j

Correct Option: 2

Q4 Calculate the hydraulic radius of a rectangular open channel having a width of 4 m and a depth of 1.5 m.

1.595 m

2. 1.230 m

3. 0.857 m

4.1.152 m

Correct Option: 3

Q.5 is adopted in water treatment, when there is an epidemic in the locality.

1. Double chlorination

2. Super chlorination

3. Break point chlorination

4. Pre-chlorination

Correct Option: 2

Q.6 Identify the INCORRECT statement with respect to the methods of booking and reducing the elevation of points by observed staff readings.

1. ‘Sum of rise minus sum of fall’ shall be equal to ‘last reduced level minus first reduced level to have no errors.

2. The height of instrument method is more rapid, less tedious and simple when compared to the rise and fall method

3.

The difference of level between consecutive points is found by comparing staff readings on the two points for same setting of the instrument is taken in rise and fall method.

4. Addition of a fore sight staff reading with the elevation of bench marks provides the height of the instrument.

Correct Option: 4

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q7 Major energy losses due to friction in a pipe flow is calculated by

1. Navier stokes equation

2. Darcy-Weisbach formula

3. Euler’s equation

4. Mach model

Correct Option: 2

Q.8 The main objective of consolidation test on soil is to determine

1 degree of saturation

2. coefficient of compressibility

3. water content

4. optimum moisture content and maximum dry density

Correct Option: 2

Q9. Calculate the actual velocity of a jet at vena contracta of an orifice, if the theoretical velocity is 20 m/s. Consider the coefficient of velocity of the orifice as 0.98.

1. 17.6 m/s

2. 18.8 m/s

3. 19.6 m/s

4. 20 m/s

Correct Option: 3

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q10 Consider the following statements with respect to capillarity in liquids and identify the correct statement.

1. Capillarity is expressed in terms of N/mm2.

2. Capillarity phenomenon can raise or lower the liquid surface level in a small tube relative to the adjacent general level of liquid when the tube is held vertically in the liquid.

3.Capillarity phenomenon can only raise the liquid surface level in a small tube relative to the adjacent general level of liquid when the tube is held vertically in the liquid.

4. Capillarity phenomenon can only lower the liquid surface level in a small tube relative to the adjacent general level of liquid when the tube is held vertically in the liquid.

Correct Option: 2

Q.11 As per IS 10500:2012, the acceptable limit of total hardness (as CaCO3) in drinking water shall NOT be more than

1 600 mg/1

2. 200 mg/1

3. 1000 mg/1

4. 400 mg/1

Correct Option: 2

Q12. Water is flowing through a pipe having diameter 300 mm and 200 mm at the bottom and upper end, respectively. Calculate the pressure energy per unit weight of the water at the upper end, if the intensity of pressure at upper end is 25 N/cm2. Consider the acceleration due to gravity as 10 m/sec2.

1 40 m

2. 12.5 m

3.50m

4.25m

Correct Option: 4

Q.13______is an example of a surface water source for water supply.

1. Aquifer

2. Estany

3. Rock fissures water

4. Recharged ground water

Correct Option: 2

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q14 As per IS 4651 (Part 2): 1989, if the value of coefficient of earth pressure ‘Ko’ at rest is 0.4, then the soil type is

1. loose sand

2. dense sand

3. hard clay

4. soft clay

Correct Option:1

Q.15 A rectangular strut with a cross-sectional area 18000 m2 is subjected to a point load (180 KN) at eccentricity 10 mm in

a plane bisecting the thickness as shown in the figure. Calculate the maximum intensity of stress in the section.

1.6 MPa

2. 12 MPa

3. 10 MPa

4. 14 MPa

Correct Option: 4

Q.16 Calculate the moment of inertia of a rectangular lamina with respect to its base using parallel axis theorem. Take base width as 150 mm and height as 200 mm.

1 3.2 x 10 mm

2. 4.0 x 10 mm

3. 2.6 x 10 mm

4.1.0x 10 mm

Correct Option: 2

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q.18 According to IS 800:2007, the maximum value of effective slenderness ratio for the compression flange of a beam against lateral torsional buckling is

1225

2. 765

3.380

4. 300

Correct Option: 4

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q19. Calculate the limiting moment of resistance in accordance with limit state design of a singly reinforced rectangular

beam whose width is 200 mm and effective depth is 400 mm. Consider the grade of steel as Fe415 and that of concrete

as M20.

1. 35.28 KN-m

2. 88.32 KN-m

3. 103.32 KN-m

4. 54.72 KN-m

Correct Option: 2

Q.20 Consider the following statements regarding circular section of a sewer and identify the correct answer

Statement A: Circular sewer provides the maximum area for a given perimeter and thus provides maximum hydraulic mean depth.

Statement B: Circular section being of uniform curvature all round, offers minimum chances of deposits, when compared to other cross-section shapes.

1. Statement A is correct and B is incorrect

2. Both statements are incorrect

3. Both statements are correct

4. Statement B is correct and A is incorrect

Correct Option: 3

Q.21 Calculate the ratio of moments of inertia of a circular lamina of radius 400 mm to that of 200 mm about their respective centroid axes.

120

2.16

3.14

4.12

Correct Option: 2

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q.22 A steel rod, 2 m long and 10 mm x 10 mm in cross-section, is subjected to a tensile force of 30 KN. Calculate the elongation of the rod if the modulus of elasticity for the material of rod is 200 GPa.

1 4.5 mm

2. 2.750 mm

3.3 mm

4.1.50 mm

Correct Option: 3

Q.23 Calcium chloride is an example of

1. super plasticiser

2. retarding admixture

3. plasticiser

4. accelerating admixture

Correct Option: 4

Q24. Consider the following statements and identify the correct answer

Statement A: The Froude’s number is used to compare the wave making resistance between bodies of various sizes and shapes.

Statement B: The Froude’s number is defined as the square root of the ratio of the inertia force of a flowing fluid to the gravity force.

1. Statement B is correct and A is incorrect

2. Statement A is correct and B is incorrect

3. Both statements are incorrect

4. Both statements are correct

Correct Option: 4

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q25. Consider the following statements with respect to the methods used to balance a traverse and identify the correct answer.

Statement A: The angles are less affected by the corrections applied by transit method than that by Bowditch’s method.

Statement B: The Bowditch’s method assumes that the errors in the angular measurements are inversely proportional to the square root of the length of surveyed line.

1. Statement A is correct and B is incorrect

2. Statement B is correct and A is incorrect

3. Both statements are correct

4. Both statements are incorrect

Correct Option: 3

Q26. An alloy wire of 2 mm2 cross-sectional area and 15 N weight bangs freely under its own weight. Find the maximum length of the wire, if its extension is NOT to exceed 0.6 mm. Take modulus of elasticity (E) for the wire material as 150

GPa.

1 12 m

2. 18 m

3. 16 m

4. 24 m

Correct Option: 4

Q.27 As per IS 456:2000, the theoretical value of the effective length of a compression member which is effectively held in position at both ends and restrained against rotation at one end is

1. 0.5 times the unsupported length of compression member

2. 0.7 times the unsupported length of compression member

3. 1.2 times the unsupported length of compression member

4. 2.0 times the unsupported length of compression member

Correct Option: 2

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

Q.28 Which of the following tests is NOT used to determine the workability of conventional type concrete?

1. V funnel test

2. Vee Bee coasistometer test

3. Compacting factor test

4. Slump test

Correct Option: 1

Q.29 A simply supported beam is subjected to a uniformly varying load. The shape of its bending moment diagram is

1. lemniscate

2. cubic parabola

3. semicircle

4. parabola

Correct Option: 2

Q.30 Which of the following tests is conducted on coarse aggregates to determine their toughness?

1.Impact value test

2. Abrasion value test

3. Specific gravity test

4. Crushing strength test

Correct Option: 1

DDA JE Civil Paper 28 March 2023 Shift 1 Part 1

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