First Assessment Exam Paper – 2081 (Even)
KHWOPA COLLEGE OF ENGINEERING
Tribhuvan University / Institute of Engineering
BE Civil, IV/II
Full Marks: 50, Pass Marks: 20, Time: 2 hrs
SUBJECT: Elective II (Ground Water Engineering)
Attempt ALL Questions.
- Describe the hydrological cycle in brief. Define meteoric water and connate water. [6]
- What are the types of spring? Define specific storage and specific yield. [6]
- State and derive Darcy’s law. Describe the limitation of Darcy’s law. [6]
- Two observation wells 1300 m apart indicate piezometric heads of 5.6 m and 3.1 m in a homogeneous isotropic confined aquifer of thickness 21 m. η=19%, K=14 m/day, grain 1mm, ν=0.01 cm²/s.
- Is Darcy valid?
- Avg pore velocity?
[8]
- Two parallel rivers 1200 m apart, depths 13 m and 8 m, K=13 m/day, rainfall 30 mm/hr, 50% infiltration. Discharge, phreatic surface, water table divide. [10]
[Diagram: Cross-section showing two parallel rivers 1200 m apart on impervious layer, unconfined aquifer between them, h1=13m, h2=8m, rain infiltration from above, water table divide marked.]