Structural Engineering
Structural Analysis
Q: What is the unit of modulus of elasticity?
A: Pascal (Pa) or N/m²
Q: What does the moment distribution method analyze?
A: Indeterminate structures by successive approximations
Q: What is the formula for calculating deflection in beams?
A: δ = (5wL⁴)/(384EI) for uniformly distributed load on simply supported beam
Steel Design
Q: What is the yield strength of Fe 415 steel?
A: 415 N/mm²
Q: What is the slenderness ratio used for in steel design?
A: To classify columns as short or long
Q: What is the purpose of stiffeners in steel beams?
A: To prevent web buckling and increase shear capacity
Concrete Design
Q: What is the standard concrete mix ratio for M20 grade?
A: 1:1.5:3 (cement:sand:aggregate)
Q: What does the term "workability" of concrete refer to?
A: The ease with which concrete can be mixed, placed, and compacted
Q: What is the minimum cement content for RCC as per IS 456?
A: 300 kg/m³ for mild exposure conditions
Geotechnical Engineering
Soil Mechanics
Q: What is the void ratio of soil?
A: The ratio of volume of voids to volume of solids
Q: What does the Atterberg limits test measure?
A: The critical water contents of soil (liquid limit, plastic limit, shrinkage limit)
Q: What is the significance of the plasticity index?
A: It indicates the range of water content over which soil remains plastic
Foundation Engineering
Q: What is the primary purpose of a pile foundation?
A: To transfer load to deeper, more stable soil layers
Q: What is the bearing capacity of soil?
A: The maximum load per unit area soil can support without failure
Q: What are the types of shallow foundations?
A: Spread footing, combined footing, strap footing, mat/raft foundation
Transportation Engineering
Highway Engineering
Q: What is the camber in road construction?
A: The slope provided to the road surface for drainage
Q: What does the term "gradient" refer to in highways?
A: The rate of rise or fall of road alignment
Q: What are the components of flexible pavement?
A: Subgrade, sub-base, base course, binder course, wearing course
Traffic Engineering
Q: What is PCU (Passenger Car Unit) used for?
A: To convert different vehicle types into equivalent passenger cars for traffic analysis
Q: What does a yellow traffic light indicate?
A: Prepare to stop (between green and red phases)
Q: What is the purpose of a rotary intersection?
A: To reduce conflict points and allow continuous traffic flow
Environmental Engineering
Water Supply
Q: What is the standard water requirement per capita per day as per IS code?
A: 150-200 liters for urban areas with full flushing systems
Q: What is the purpose of aeration in water treatment?
A: To remove dissolved gases and oxidize iron/manganese
Wastewater Engineering
Q: What is the standard BOD test duration at 20°C?
A: 5 days
Q: What are the three stages of sewage treatment?
A: Primary (physical), Secondary (biological), Tertiary (advanced)
Surveying
Q: What is the principle of working of a prismatic compass?
A: It uses magnetic needle that points to magnetic north
Q: What is the purpose of temporary adjustments in a theodolite?
A: To level, center, and focus the instrument for observations
Q: What is the correction for curvature in leveling?
A: Cc = 0.0785 D² (where D is distance in km)