D32 face the challenge

Which curve is used to connect a straight road with a circular curve?

• Vertical curve
• Simple curve
• Transition curve
• Compound curve

Answer explanation

Transition curves are used to gradually change from straight to circular curves, improving vehicle comfort and safety.

Which method is used for purification of water in treatment plants?

• Coagulation
• Electrolysis
• Distillation
• Ion exchange

Answer explanation

Coagulation helps in settling suspended particles by adding chemicals like alum to clarify water in treatment plants.

Which classification of road connects district headquarters and important towns?

• National highways
• State highways
• District roads
• Village roads

In GPS surveying, what is the function of satellites?

• Transmit signals
• Receive coordinates
• Perform triangulation
• Draw contour maps

Answer explanation

Satellites in GPS systems continuously transmit radio signals, which are received and processed by GPS receivers on Earth.

Which element of permanent way holds the rails to sleepers?

• Fish plates
• Spikes and bolts
• Ballast
• Rail anchors

Answer explanation

Spikes and bolts (fixtures) are used to fix rails to sleepers to ensure alignment and stability of track.

The main function of a septic tank is to:

• Store drinking water
• Treat sewage anaerobically
• Pump water to tanks
• Filter well water

Answer explanation

Septic tanks treat sewage using anaerobic bacteria, allowing solids to settle and decomposing organic waste.

Which software is widely used for 2D and 3D drafting in civil engineering?

• MS Excel
• AutoCAD
• MATLAB
• STAAD Pro

Answer explanation

AutoCAD is a popular drafting software used for preparing civil engineering drawings in both 2D and 3D formats.

Which of the following is not a type of shallow foundation?

• Raft foundation
• Isolated footing
• Combined footing
• Pile foundation

Answer explanation

Pile foundation is a deep foundation used when soil near the surface is not strong enough to support loads.

Which structural component is used to resist horizontal loads in buildings?

• Column
• Beam
• Shear wall
• Footing

Answer explanation

Shear walls are vertical elements of a structural system designed to resist horizontal forces like wind and seismic loads.

Which term refers to the water required for crop growth in a season?

• Duty
• Delta
• Base period
• Crop period

Answer explanation

Delta represents the total depth of water required by a crop during its entire growing period.