ExamVeda
Login
Home

Rock Mechanics and Rock Engineering MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Rock Mechanics and Rock Engineering. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Rock Mechanics and Rock Engineering chapter is particularly important for students studying Geological engineering. Page-4 section-1

Each section contains 100 MCQs on Rock Mechanics and Rock Engineering .
31
What is the Poisson�s ratio of a rock?
Discuss
Answer & Solution
Answer: Option B
Solution:
Poisson�s ratio is defined as the ratio of lateral strain to axial strain in a material subjected to uniaxial loading.It typically ranges from 0.1 to 0.3 for rocks.
32
Which of the following parameters is directly measured in the Point Load Test?
Discuss
Answer & Solution
Answer: Option C
Solution:
The Point Load Test gives the point load index, which can be correlated with compressive strength but is not directly equal to it.
33
The factor of safety in slope design is defined as:
Discuss
Answer & Solution
Answer: Option A
Solution:
Factor of Safety (FoS) = Resisting forces / Driving forces.It helps determine slope stability; FoS > 1.0 implies stability.
34
The most suitable rock for underground excavation without support is:
Discuss
Answer & Solution
Answer: Option B
Solution:
Granite is a strong, massive, unweathered igneous rock and often does not need immediate support during tunneling.
35
Which parameter does the GSI system evaluate?
Discuss
Answer & Solution
Answer: Option B
Solution:
The Geological Strength Index (GSI) is used to estimate rock mass strength and deformability based on structure and surface condition.
36
In a Mohr-Coulomb failure envelope, failure occurs when:
Discuss
Answer & Solution
Answer: Option D
Solution:
Failure in rocks under the Mohr-Coulomb criterion occurs when shear stress exceeds shear strength governed by cohesion and friction.
37
What is the main purpose of using grouting in rock engineering?
Discuss
Answer & Solution
Answer: Option C
Solution:
Grouting is used to seal water paths and strengthen rock masses by injecting cementitious or chemical material.
38
Slaking of rocks occurs due to:
Discuss
Answer & Solution
Answer: Option C
Solution:
Slaking is the disintegration of rocks like shale due to repeated wetting and drying cycles.
39
What is UCS in rock testing?
Discuss
Answer & Solution
Answer: Option C
Solution:
Uniaxial Compressive Strength (UCS) is the maximum axial compressive stress a rock specimen can withstand without confinement.
40
The Brazilian test is used to determine:
Discuss
Answer & Solution
Answer: Option C
Solution:
The Brazilian test (indirect tensile test) determines the tensile strength of rock using diametrical loading on a disk-shaped sample.