Civil Engineering
Civil Engineering MCQs with Answers and Explanations
Civil engineering MCQs with answers and detailed explanations for PEC, NTS, WAPDA, PPSC and engineering job tests. Free subject-wise online practice. Take a scored quiz instead →
The standard test temperature for determining California Bearing Ratio (CBR) or Bitumen penetration in laboratories is:
A15°C
B25°C
C37°C
D50°C
In soil mechanics, quick conditions are prevented by placing a graded inverted filter on the downstream side, which must satisfy:
AFilter permeability higher than subgrade soil while preventing soil particle migration
BFilter permeability lower than subgrade soil to block water flow
CEqual void ratio for filter and subgrade
DZero fine particle content
The critical velocity ratio (V / Vo) in Kennedy’s silt theory for canal design is defined as:
ARatio of actual mean velocity to critical non-silting non-scouring velocity
BRatio of critical velocity to maximum channel capacity
CRatio of mean depth to hydraulic radius
DRatio of bed shear stress to critical shear stress
In steel beam design, laterally unsupported beams are susceptible to which mode of failure?
AWeb crippling
BLateral Torsional Buckling (LTB)
CShear yield failure
DBlock shear failure
The design period for municipal water treatment plant units is standardly taken as:
A5 to 10 years
B15 to 30 years
C50 to 75 years
D100 years
Which type of sewer pipe material is immune to crown corrosion caused by hydrogen sulfide gas (H2S)?
AUnlined Concrete Pipe
BVitrified Clay Pipe (VCP)
CMild Steel Pipe
DAsbestos Cement Pipe
The phenomenon of bleeding in fresh concrete refers to:
ASeparation of coarse aggregates from concrete mass
BAppearance of excess mixing water on concrete surface after compaction
CLoss of air bubbles during vibration
DCracking due to thermal expansion
In rigid pavement slab design, expansion joints are provided primarily to:
ARelieve tensile stresses caused by drying shrinkage
BAllow longitudinal thermal expansion and prevent compressive buckling
CImprove skid resistance of pavement surface
DAllow transverse shear load transfer between lanes
In two-point and three-point problems of plane table surveying, orientation is achieved by:
AResection
BIntersection
CRadiation
DTraversing