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 stopping sight distance (SSD) on a highway depends primarily on:
ADesign speed, perception-reaction time, and coefficient of friction
BCamber of road only
CVehicle width and wheel gauge
DPavement thickness
The discharge Q through a rectangular notch/weir is proportional to:
AH^2
BH^(1/2)
CH^(5/2)
DH^(3/2)
Froude number in open channel flow is defined as the ratio of inertia force to:
AGravity force
BSurface tension force
CViscous force
DElastic force
A hydraulic jump occurs in an open channel flow when the flow transitions from:
ASubcritical flow to supercritical flow
BLaminar flow to turbulent flow
CSupercritical flow to subcritical flow
DUniform flow to non-uniform flow
Bernoulli’s equation is based on the law of conservation of:
AMomentum
BAngular momentum
CMass
DEnergy
The major head loss in a pipeline flowing full under pressure is primarily caused by:
APipe bends and valves
BFriction along pipe walls
CSudden enlargement of pipe
DSudden contraction of pipe
The active earth pressure coefficient Ka for a soil with internal friction angle phi is given by:
A(1 + sin(phi)) / (1 - sin(phi))
Bcos(phi) / (1 + sin(phi))
C(1 - sin(phi)) / (1 + sin(phi))
D1 / sin(phi)
Quick sand is a condition that occurs in cohesionless soils when the effective stress becomes:
AZero due to upward seepage pressure
BInfinite due to soil compaction
CEqual to total stress
DMaximum due to heavy surcharge
Atterberg limit corresponding to the water content at which soil passes from plastic state to liquid state is:
AConsistency index
BPlastic limit
CLiquid limit
DShrinkage limit
When the degree of saturation of a soil sample is 100%, the soil is said to be:
ASubmerged soil without voids
BFully saturated soil
CPartially saturated soil
DDry soil