Civil Engineering - GATE Exam Questions


"Success has many fathers, while failure is an orphan."
- (Proverb)

The Prandtl mixing length for turbulent flow through pipes is

A. independent of shear stress
B. a universal constant
C. zero at the pipe wall
D. independent of radial distance from pipe axis


A 40° slope is excavated to a depth of 10 m in a deep layer of saturated clay of unit weight 20 kN.m3; the relevant shear strength parameters are cu = 70 kN/m2 and φu = 0. The rock ledge is at a great depth. The Taylor's stability coefficient for φu = 0 and 40° slope angle is 0.18. The factor of safety of the slope is :

A. 2.0B. 2.1
C. 2.2D. 2.3


Lysimeter and Tensiometer are used to measure respectively, one of the following groups of quantities :

A. Capillary potential and permeability
B. Evapotranspiration and capillary potential
C. Velocity in channels and vapour pressure
D. Velocity in pipes and pressure head


The ruling minimum radius of horizontal curve of a national highway in plain terrain for ruling design speed of 100 km/hour with e = 0.07 and f = 0.15 is close to

A. 250 m
B. 360 m
C. 36 m
D. 300 m


Principle involved in the relationship between submerged unit weight and saturated weight of a soil is based on

A. Equilibrium of floating bodies
B. Archimedes' principle
C. Stokes' law
D. Darcy's law

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