MCQOPTIONS

Explore topic-wise MCQs in Engineering Foundation.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Foundation knowledge and support exam preparation. Choose a topic below to get started.

1.	In active state, the major principal stress σ1 is ____________
A.	horizontal direction
B.	vertical direction
C.	can be both vertical and horizontal direction
D.	in no direction
Answer» C. can be both vertical and horizontal direction

2.	The solution of Kolter’s equation gives ____________
A.	permeability of soil
B.	orientation of slip lines
C.	specific gravity of grains
D.	seepage pressure
Answer» C. specific gravity of grains

3.	Combing the three equations, \(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} -\frac{σ_z+σ_x}{2} sinφ=c cosφ\), \(\frac{∂σ_x}{∂x}+\frac{∂τ_{xz}}{∂z}=0\), and \(\frac{∂τ_{xz}}{∂x}+\frac{∂σ_x}{∂z}+γ=0\), lead to the equation called ___________
A.	Kolter’s equation
B.	Terzaghi’s equation
C.	Darcy’s equation
D.	Skempton’s equation
Answer» B. Terzaghi’s equation

4.	The Mohr Coulomb equation in terms of stress components in x-z plane is ______________
A.	\(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} -\frac{σ_z+σ_x}{2} sinφ=c cosφ\)
B.	\(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} \frac{σ_z+σ_x}{2} sinφ=c cosφ\)
C.	\(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} = c cosφ\)
D.	\(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} -\frac{σ_z+σ_x}{2} sinφ=cosφ\)
Answer» B. \(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} \frac{σ_z+σ_x}{2} sinφ=c cosφ\)

5.	The plastic equilibrium stress equation in terms of flow valve is _____
A.	σ1=2c∛Nφ+σ3 Nφ
B.	σ1=2c√Nφ+σ3 Nφ
C.	σ1=2cNφ-σ3 Nφ
D.	σ1=Nφ+σ3 Nφ
Answer» C. σ1=2cNφ-σ3 Nφ

6.	The flow value is given by ______
A.	\(N_φ=cot^2 (45°+\frac{φ}{2})\)
B.	\(N_φ=cos^2 (45°+\frac{φ}{2})\)
C.	\(N_φ=tan^2 (45°+\frac{φ}{2})\)
D.	\(N_φ=sin^2 (45°+\frac{φ}{2})\)
Answer» D. \(N_φ=sin^2 (45°+\frac{φ}{2})\)

7.	The stress condition during plastic equilibrium in terms of tangent of angle is _______
A.	\(σ_1=tan⁡(45°+\frac{φ}{2})+σ_3 tan^2 (45°+\frac{φ}{2}) \)
B.	\(σ_1=2c+σ_3 tan^2 (45°+\frac{φ}{2})\)
C.	\(σ_1=2c \,tan⁡(45°+\frac{φ}{2})+σ_3\)
D.	\(σ_1=2c \,tan⁡(45°+\frac{φ}{2})+σ_3 tan^2 (45°+\frac{φ}{2})\)
Answer» E.

8.	The stress condition during plastic equilibrium can be represented by _____________
A.	\(\frac{σ_1-σ_3}{2}\frac{σ_1+σ_3}{2} sinφ=cosφ \)
B.	\(\frac{σ_1-σ_3}{2}+\frac{σ_1+σ_3}{2} sinφ=c cosφ\)
C.	\(\frac{σ_1*σ_3}{2}-\frac{σ_1+σ_3}{2} sinφ=c cosφ\)
D.	\(\frac{σ_1-σ_3}{2}-\frac{σ_1+σ_3}{2} sinφ=c cosφ\)
Answer» E.

9.	A body is said to be in plastic equilibrium, if every point of it is ________
A.	in the verge of failure
B.	in equilibrium
C.	in stable state
D.	elastic state
Answer» B. in equilibrium

10.	Surcharge angle β is ____________
A.	inclination of surcharge to the vertical
B.	inclination of surcharge to the normal of the wall
C.	inclination of surcharge to the horizontal
D.	inclination of surcharge to the tangent to the wall
Answer» D. inclination of surcharge to the tangent to the wall

11.	The portion of backfill lying above a horizontal plane of wall is called ________
A.	surcharge
B.	base
C.	foot
D.	truss
Answer» B. base

12.	The backfill has its top surface ____________
A.	horizontal only
B.	inclined only
C.	both horizontal and inclined
D.	vertical only
Answer» D. vertical only

13.	The material retained by the retaining wall is known as_________
A.	roof
B.	slab
C.	backfill
D.	footing
Answer» D. footing

14.	___________ is used for maintaining the ground surface at different elevations.
A.	Floor
B.	Retaining wall
C.	Ceiling
D.	Roof
Answer» C. Ceiling

15.	The plastic state of stress when the failure is imminent was investigated by ___________
A.	Rankine
B.	Darcy
C.	Skempton
D.	Terzaghi
Answer» B. Darcy