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Question 101

DSSSB JE 2023• Section B1

Select the INCORRECT statement related to terminologies with its definition used in Arch construction.

  1. AOption (a)

    Soffit: This is the lower half of the arch between the crown and skewback

  2. BOption (b)

    Voussoirs: These are the wedge-shaped units forming the courses of an arch

  3. COption (c)

    Arcades: It is a row of arches supported on piers and carrying a wall over it

  4. DOption (d)

    Spandril: This is space between the extrados and the horizontal line through the crown

View answer & explanation

Correct answer

Answer: (a)A.

Soffit: This is the lower half of the arch between the crown and skewback

Explanation not yet available.

Question 102

DSSSB JE 2023• Section B1

A reservoir is constructed at an elevation of 550 m above mean sea level and a powerhouse is located at an elevation of 350 m above mean sea level. The water is being diverted to the powerhouse through a penstock. Which type of turbine is suitable?

  1. AOption (a)

    Pelton turbine

  2. BOption (b)

    Francis turbine

  3. COption (c)

    Kaplan turbine

  4. DOption (d)

    Propeller turbine

View answer & explanation

Correct answer

Answer: (a)A.

Pelton turbine

Explanation not yet available.

Question 103

DSSSB JE 2023• Section B1

A 4 m wide by 2 m deep rectangular channel is flowing fully. The bed slope of the channel is 1 in 2500. If Chezy’s constant is 50, what is the discharge through the channel?

  1. AOption (a)

    \( 8 \text{ m}^3/\text{s} \)

  2. BOption (b)

    \( 10 \text{ m}^3/\text{s} \)

  3. COption (c)

    \( 12 \text{ m}^3/\text{s} \)

  4. DOption (d)

    \( 6 \text{ m}^3/\text{s} \)

View answer & explanation

Correct answer

Answer: (a)A.

\( 8 \text{ m}^3/\text{s} \)

Explanation not yet available.

Question 104

DSSSB JE 2023• Section B1

Which of the following properties of concrete facilitates high durability of concrete?

  1. AOption (a)

    High permeability

  2. BOption (b)

    High early strength of concrete

  3. COption (c)

    Low water/cement ratio

  4. DOption (d)

    Flaky aggregates

View answer & explanation

Correct answer

Answer: (a)A.

High permeability

Explanation not yet available.

Question 105

DSSSB JE 2023• Section B1

Match the type of cement in column A with its corresponding application in column B.

Types of cementApplications
1. Portland slag cementA. Cold weather concreting works
2. Low heat Portland cementB. Offshore structures
3. Rapid hardening cementC. Resistance to corrosion of reinforcement
4. Super sulphated cementD. Water retaining structures like dams
  1. AOption (a)

    1-B, 2-D, 3-A, 4-C

  2. BOption (b)

    1-C, 2-D, 3-A, 4-B

  3. COption (c)

    1-D, 2-C, 3-A, 4-B

  4. DOption (d)

    1-C, 2-D, 3-B, 4-A

View answer & explanation

Correct answer

Answer: (a)A.

1-B, 2-D, 3-A, 4-C

Explanation not yet available.

Question 106

DSSSB JE 2023• Section B1

What is the maximum shear stress developed for a wooden beam of width 100 mm and depth 250 mm, subjected to shear force of 75 kN?

  1. AOption (a)

    3.5 MPa

  2. BOption (b)

    4.0 MPa

  3. COption (c)

    4.5 MPa

  4. DOption (d)

    5.0 MPa

View answer & explanation

Correct answer

Answer: (a)A.

3.5 MPa

Explanation not yet available.

Question 107

DSSSB JE 2023• Section B1

What is the purpose of a super-passage in irrigation engineering?

  1. AOption (a)

    To cross the natural stream at relatively same level

  2. BOption (b)

    To cross the canal below the natural stream

  3. COption (c)

    To cross the canal over the natural stream

  4. DOption (d)

    To divert the water from the river to the canal

View answer & explanation

Correct answer

Answer: (a)A.

To cross the natural stream at relatively same level

Explanation not yet available.

Question 108

DSSSB JE 2023• Section B1

Identify whether the following statements related to the measurement of rainfall and runoff are true/false.

  1. The depth of rainfall is measured at 8:00 a.m. every day, using float type of rain gauge.

  2. The approximate stream flow velocity can be determined by floats.

  1. AOption (a)

    Both statements are true

  2. BOption (b)

    Statement 1 is false and Statement 2 is true

  3. COption (c)

    Statement 1 is true and Statement 2 is false

  4. DOption (d)

    Both statements are false

View answer & explanation

Correct answer

Answer: (a)A.

Both statements are true

Explanation not yet available.

Question 109

DSSSB JE 2023• Section B1

Where are ‘bullnose bricks’ used in a brick masonry construction?

  1. AOption (a)

    Rounded quoin

  2. BOption (b)

    Window joints

  3. COption (c)

    Furnaces

  4. DOption (d)

    Towers

View answer & explanation

Correct answer

Answer: (a)A.

Rounded quoin

Explanation not yet available.

Question 110

DSSSB JE 2023• Section B1

Calculate the maximum torque for a solid circular shaft having a polar moment of inertia of \( 30 \times 10^{6} \text{ mm}^{4} \) that can transmit, if the maximum angle of twist is \( 1^{\circ} \) in a length of 1.5 m.

(Take the modulus of rigidity equal to 90 GPa)

  1. AOption (a)

    \( 10 \pi \text{ kN-m} \)

  2. BOption (b)

    \( 15 \pi \text{ kN-m} \)

  3. COption (c)

    \( 5 \pi \text{ kN-m} \)

  4. DOption (d)

    \( 20 \pi \text{ kN-m} \)

View answer & explanation

Correct answer

Answer: (a)A.

\( 10 \pi \text{ kN-m} \)

Explanation not yet available.
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