MCQ Collection
GAT Subject Engineering MCQs
Practice GAT Subject Engineering questions with answers and explanations.
Choose an option to check your answer.
Correct Answer: B. A large slab supporting several columns or walls
Explanation:
A raft or mat distributes loads over a broad area.
It is useful where soil bearing capacity is low or columns are closely spaced.
Choose an option to check your answer.
Correct Answer: B. Raising the outer edge of the pavement to counter centrifugal effects
Explanation:
Superelevation helps balance lateral acceleration on curves.
It improves comfort and reduces skidding and overturning risk.
Choose an option to check your answer.
Correct Answer: C. To transfer loads to deeper competent strata or through skin friction
Explanation:
Piles carry loads through end bearing, shaft resistance, or both.
They are used when near-surface soils are weak.
Choose an option to check your answer.
Correct Answer: C. Distance needed to perceive, react, and stop safely
Explanation:
Stopping sight distance includes perception-reaction distance and braking distance.
It is a fundamental geometric-design requirement.
Choose an option to check your answer.
Correct Answer: D. The pressure soil can support without shear failure
Explanation:
Bearing capacity relates to the soil's resistance to foundation loading.
Design also considers settlement, not shear failure alone.
Choose an option to check your answer.
Correct Answer: D. Rigid pavement
Explanation:
Rigid pavements use concrete slab stiffness to distribute wheel loads.
Flexible pavements distribute load through layered materials.
Choose an option to check your answer.
Correct Answer: A. Time-dependent settlement caused by expulsion of water from saturated soil
Explanation:
Consolidation is important in saturated fine-grained soils such as clay.
Load increases pore pressure and water gradually drains out.
Choose an option to check your answer.
Correct Answer: A. The prepared soil supporting the pavement structure
Explanation:
The subgrade is the foundation of the pavement layers.
Its strength and drainage strongly affect pavement performance.
Choose an option to check your answer.
Correct Answer: B. Resistance of soil to penetration by a standard sampler
Explanation:
The SPT gives an N-value related to soil density or consistency.
It also provides disturbed samples for identification.
Choose an option to check your answer.
Correct Answer: C. Mechanical densification by reducing air voids
Explanation:
Compaction increases dry density and strength while reducing compressibility.
It is achieved using rollers, rammers, or vibratory equipment.
Choose an option to check your answer.
Correct Answer: B. Slump test
Explanation:
The slump test provides a quick indication of consistency and workability.
It is widely used for ordinary concrete in the field.
Choose an option to check your answer.
Correct Answer: C. Maintaining adequate moisture and temperature for hydration
Explanation:
Curing allows cement hydration to continue.
Proper curing improves strength, durability, and crack resistance.