BPSC ASSISTANT ENGINEER CIVIL ENGINEERING BOOK TEST SERIES

12 May 2025 by

VIVEK

44. What is the main purpose of using sealants in permanent structures?

- A) To add aesthetic value

- B) To prevent water infiltration

- C) To enhance flexibility

- D) To reduce noise

Answer: B) To prevent water infiltration

Analysis: Sealants are used to prevent water infiltration, which can lead to deterioration and compromise the permanence of the structure.

45. Which of the following materials is least suitable for permanent fixation in a high-temperature environment?

- A) Steel

- B) Concrete

- C) Plastic

- D) Ceramic

Answer: C) Plastic

Analysis: Plastic is less suitable for high-temperature environments due to its tendency to deform, which can compromise the permanence of the structure.

46. What is the impact of freeze-thaw cycles on the permanence of concrete structures?

- A) Improves durability

- B) Causes cracking and spalling

- C) Has no impact

- D) Increases load capacity

Answer: B) Causes cracking and spalling

Analysis: Freeze-thaw cycles can cause cracking and spalling in concrete, which can compromise the structure's permanence if not properly managed.

47. Which of the following is a permanent solution for foundation settlement issues?

- A) Adding more soil

- B) Installing helical piers

- C) Increasing the load on the foundation

- D) Installing temporary shoring

Answer: B) Installing helical piers

Analysis: Helical piers provide a permanent solution by stabilizing the foundation and preventing further settlement.

Here are 50 multiple-choice questions (MCQs) on the topic of "Internal and External Forces" in Civil Engineering, along with answer analyses.

1. Which of the following is considered an internal force in a structural element?

- A) Gravity

- B) Wind load

- C) Tension

- D) Earthquake load

Answer: C) Tension

Analysis: Internal forces such as tension, compression, and shear develop within a structural element in response to external loads.

2. What type of force is primarily responsible for bending in beams?

- A) Compressive force

- B) Torsional force

- C) Bending moment

- D) Shear force

Answer: C) Bending moment

Analysis: Bending moments create internal stresses that lead to bending in beams when subjected to external loads.

3. Which of the following is an example of an external force acting on a structure?

- A) Shear force

- B) Axial force

- C) Wind load

- D) Bending moment

Answer: C) Wind load

Analysis: Wind load is an external force applied to a structure, which can cause internal forces like shear and bending in structural elements.

4. What is the primary effect of axial forces on structural members?

- A) Torsion

- B) Compression or tension

- C) Bending

- D) Shear

Answer: B) Compression or tension

Analysis: Axial forces act along the length of a structural member, resulting in either compression or tension.

5. In a truss structure, what type of internal force do the members primarily experience?

- A) Bending

- B) Torsion

- C) Shear

- D) Axial force

Answer: D) Axial force

Analysis: Truss members primarily experience axial forces (either tension or compression) due to the nature of the load distribution in the truss.

6. Which internal force is most likely to cause deformation in a beam?

- A) Shear force

- B) Axial force

- C) Bending moment

- D) Torsional force

Answer: C) Bending moment

Analysis: Bending moments cause the beam to bend, leading to deformation.

7. How does an external force like an earthquake affect a building structure?

- A) It generates internal axial forces only

- B) It applies a uniform load

- C) It induces shear forces and bending moments

- D) It has no impact on internal forces

Answer: C) It induces shear forces and bending moments

Analysis: Earthquake forces can induce both shear forces and bending moments in a building structure, which can lead to deformation and potential failure if not properly designed.

8. What is the result of an internal compressive force in a column?

- A) The column bends outward

- B) The column shortens

- C) The column elongates

- D) The column remains unaffected

Answer: B) The column shortens

Analysis: Compressive forces cause the column to shorten as the material is compressed.

9. Which of the following forces is an external force acting on a bridge?

- A) Shear force in the bridge deck

- B) Axial force in the columns

- C) Dead load of the bridge

- D) Traffic load

Answer: D) Traffic load

Analysis: Traffic load is an external force that acts on the bridge, affecting the internal forces in various structural members.

10. What type of internal force is generated in a circular shaft under torsion?

- A) Axial force

- B) Bending moment

- C) Shear force

- D) Torsional moment

Answer: D) Torsional moment

Analysis: Torsional moment is the internal force generated when a circular shaft is subjected to twisting or torque.

11. The internal resistance offered by a material to external forces is known as:

- A) Stress

- B) Strain

- C) Load

- D) Deformation

Answer: A) Stress

Analysis: Stress is the internal resistance offered by a material per unit area to external forces applied to it.

12. Which internal force is responsible for the shear deformation of a structural element?

- A) Axial force

- B) Shear force

- C) Bending moment

- D) Torsion

Answer: B) Shear force

Analysis: Shear force is responsible for causing shear deformation in structural elements, acting parallel to the cross-section of the element.

13. In a simply supported beam, where is the maximum bending moment typically located?

- A) At the supports

- B) At the midpoint

- C) At one-quarter span

- D) Near the edges

Answer: B) At the midpoint

Analysis: In a simply supported beam, the maximum bending moment usually occurs at the midpoint of the beam span due to the applied loads.

14. Which of the following best describes a live load?

- A) Load due to the weight of the structure itself

- B) Load due to occupants and movable objects

- C) Load due to wind and earthquakes

- D) Load due to soil pressure

Answer: B) Load due to occupants and movable objects

Analysis: Live loads are external forces resulting from occupants, furniture, and other movable items within a structure.

15. What is the effect of shear force on a beam's cross-section?

- A) Causes axial deformation

- B) Causes horizontal deformation

- C) Causes vertical deformation

- D) Causes rotational deformation

Answer: C) Causes vertical deformation

Analysis: Shear force causes vertical deformation within a beam’s cross-section, leading to potential shear failures.

16. Which of the following is a direct consequence of torsional forces in a structure?

- A) Axial elongation

- B) Twisting of the structure

- C) Shear deformation

- D) Bending of the structure

Answer: B) Twisting of the structure

Analysis: Torsional forces result in the twisting of structural elements, which can affect the overall stability and integrity of the structure.

17. What internal force is developed in a cable subjected to tension?

- A) Compressive force

- B) Shear force

- C) Tensile force

- D) Torsional force

Answer: C) Tensile force

Analysis: When a cable is subjected to tension, tensile forces develop within the cable, causing it to elongate.

18. Which of the following best describes the effect of wind load on a high-rise building?

- A) Generates compressive forces only

- B) Generates tensile forces only

- C) Causes lateral forces and bending moments

- D) Causes no significant effect

Answer: C) Causes lateral forces and bending moments

Analysis: Wind load exerts lateral forces on high-rise buildings, inducing bending moments and potential lateral displacement.

19. The presence of which external force is most critical in designing structures in earthquake-prone areas?

- A) Axial force

- B) Shear force

- C) Bending moment

- D) Seismic force

Answer: D) Seismic force

Analysis: Seismic forces are critical in earthquake-prone areas as they can cause significant internal stresses and displacements in structures.

BPSC ASSISTANT ENGINEER CIVIL ENGINEERING BOOK TEST SERIES

44. What is the main purpose of using sealants in permanent structures?

- A) To add aesthetic value

- B) To prevent water infiltration

- C) To enhance flexibility

- D) To reduce noise

Answer: B) To prevent water infiltration

Analysis: Sealants are used to prevent water infiltration, which can lead to deterioration and compromise the permanence of the structure.

45. Which of the following materials is least suitable for permanent fixation in a high-temperature environment?

- A) Steel

- B) Concrete

- C) Plastic

- D) Ceramic

Answer: C) Plastic

Analysis: Plastic is less suitable for high-temperature environments due to its tendency to deform, which can compromise the permanence of the structure.

46. What is the impact of freeze-thaw cycles on the permanence of concrete structures?

- A) Improves durability

- B) Causes cracking and spalling

- C) Has no impact

- D) Increases load capacity

Answer: B) Causes cracking and spalling

Analysis: Freeze-thaw cycles can cause cracking and spalling in concrete, which can compromise the structure's permanence if not properly managed.

47. Which of the following is a permanent solution for foundation settlement issues?

- A) Adding more soil

- B) Installing helical piers

- C) Increasing the load on the foundation

- D) Installing temporary shoring

Answer: B) Installing helical piers

Analysis: Helical piers provide a permanent solution by stabilizing the foundation and preventing further settlement.

Here are 50 multiple-choice questions (MCQs) on the topic of "Internal and External Forces" in Civil Engineering, along with answer analyses.

1. Which of the following is considered an internal force in a structural element?

- A) Gravity

- B) Wind load

- C) Tension

- D) Earthquake load

Answer: C) Tension

Analysis: Internal forces such as tension, compression, and shear develop within a structural element in response to external loads.

2. What type of force is primarily responsible for bending in beams?

- A) Compressive force

- B) Torsional force

- C) Bending moment

- D) Shear force

Answer: C) Bending moment

Analysis: Bending moments create internal stresses that lead to bending in beams when subjected to external loads.

3. Which of the following is an example of an external force acting on a structure?

- A) Shear force

- B) Axial force

- C) Wind load

- D) Bending moment

Answer: C) Wind load

Analysis: Wind load is an external force applied to a structure, which can cause internal forces like shear and bending in structural elements.

4. What is the primary effect of axial forces on structural members?

- A) Torsion

- B) Compression or tension

- C) Bending

- D) Shear

Answer: B) Compression or tension

Analysis: Axial forces act along the length of a structural member, resulting in either compression or tension.

5. In a truss structure, what type of internal force do the members primarily experience?

- A) Bending

- B) Torsion

- C) Shear

- D) Axial force

Answer: D) Axial force

Analysis: Truss members primarily experience axial forces (either tension or compression) due to the nature of the load distribution in the truss.

6. Which internal force is most likely to cause deformation in a beam?

- A) Shear force

- B) Axial force

- C) Bending moment

- D) Torsional force

Answer: C) Bending moment

Analysis: Bending moments cause the beam to bend, leading to deformation.

7. How does an external force like an earthquake affect a building structure?

- A) It generates internal axial forces only

- B) It applies a uniform load

- C) It induces shear forces and bending moments

- D) It has no impact on internal forces

Answer: C) It induces shear forces and bending moments

Analysis: Earthquake forces can induce both shear forces and bending moments in a building structure, which can lead to deformation and potential failure if not properly designed.