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 →
An Isochrone in catchment hydrology is defined as a line connecting points on the catchment having equal:
ARainfall intensity
BTravel time of runoff to the catchment outlet
CElevation above sea level
DInfiltration capacity
In steel design, slenderness ratio (lambda) of a compression member is defined as ratio of effective length (Leff) to its:
AGross cross-sectional area
BMinimum radius of gyration (rmin)
COverall depth of section
DFlange width
According to Kennedy’s silt theory, the critical velocity ratio (Vo) in a canal is proportional to flow depth (D) raised to the power:
A0.50
B0.64
C1.00
D1.76
The relation between Duty ‘D’ (in hectares/cumec), Delta ‘delta’ (in meters), and Base Period ‘B’ (in days) is:
Adelta = 8.64 * B / D
Bdelta = 8.64 * D / B
CD = 8.64 * delta / B
Ddelta = 864 * B / D
Activities located along the Critical Path in a project network diagram possess a Total Float equal to:
APositive value equal to duration
BZero
CNegative value equal to slack
DInfinity
The maximum permissible concentration of nitrates (as NO3-) in drinking water to prevent Methemoglobinemia (Blue Baby Syndrome) in infants is:
A10 mg/L
B45 mg/L
C100 mg/L
D250 mg/L
In CPM project network planning, Total Float (TF) of an activity is calculated as:
ALatest Start Time (LS) - Earliest Start Time (ES)
BEarliest Finish Time (EF) - Earliest Start Time (ES)
CLatest Finish Time (LF) - Latest Start Time (LS)
DEarliest Start Time of next activity - Earliest Finish Time of current activity
Biochemical Oxygen Demand (BOD5) test of wastewater sample is standardly carried out at a temperature of:
A15°C for 5 days
B20°C for 5 days
C25°C for 3 days
D37°C for 24 hours
In municipal water purification plants, alum (Aluminium Sulphate) is added primarily as a:
ADisinfectant
BCoagulant
CSoftening agent
DAlgicide
The Stopping Sight Distance (SSD) on a level highway depends on vehicle speed (v), driver reaction time (t), and coefficient of longitudinal friction (f) as:
Av*t + v² / (2 * g * f)
Bv*t + v² / (g * f)
Cv*t + v / (2 * g * f)
D2*v*t + v² / (2 * g * f)