This set of Geotechnical Engineering Questions and Answers for Experienced people focuses on “The Jodhpur Permeameter”.
1. The Jodhpur permeameter, was designed by ___________
a) Louden
b) Kozney
c) Alam Singh
d) Poiseullie’s
View Answer
Explanation: The Jodhpur permeameter was designed and developed by Dr. Alam Singh in 1958, at the soil engineering laboratory of M.B.M Engineering College, Jodhpur.
2. The Jodhpur permeameter apparatus is, meant for studying _________
a) Permeability characteristics
b) Coefficient of permeability
c) Capillary rise
d) All of the mentioned
View Answer
Explanation: The apparatus is meant for studying the permeability characteristics of all types of soil samples under different conditions of laboratory as well as field.
3. Which of the following permeability test, can be done in Jodhpur permeameter?
a) Falling head test and Constant head test
b) Pumping-out test
c) None of the mentioned
d) All of the mentioned
View Answer
Explanation: In Jodhpur permeameter, both falling head and constant head test can be performed on remolded as well as undisturbed specimens.
4.The Remoulded specimen in Jodhpur Permeameter, can be prepared by ___________
a) Static compaction and Dynamic compaction
b) Tensile compaction
c) None of the mentioned
d) All of the mentioned
View Answer
Explanation: The remoulded specimen can be prepared either by static compaction, or b dynamic compaction, at the desired density.
5. What is the diameter of the permeameter mould (i.e. Cylinder), used in Jodhpur permeameter?
a) 79.8 mm
b) 50 mm
c) 300 mm
d) 60 mm
View Answer
Explanation: The permeameter mould which is a cylinder has an internal capacity 300 ml, 50 cm2 cross-sectional area, and diameter of 79.8 mm and a 6 cm height.
6. Which of the following tools is not used in static compaction?
a) Split collar
b) Perforated plate
c) DRT
d) Top cap
View Answer
Explanation: The DRT tool (Dynamic Ramming tool) is used for compaction in the Jodhpur mini compactor test.
7. If permeability at proctor’s maximum dry density is required, which of the following method can be used?
a) Jodhpur mini compactor test
b) Proctor test
c) Compaction in permeameter
d) All of the mentioned
View Answer
Explanation: If permeability at proctor’s maximum dry density and at a moulding water content equal to the optimum value is required, first the maximum dry density and optimum water content is required is determined which can be done using Jodhpur mini compactor test, proctor test or by compaction in permeameter mould itself.
8. The specimen in permeameter is compacted dynamically using___________
a) DRT
b) Split collar
c) Rod temper
d) Core cutter
View Answer
Explanation: When compacting the specimen dynamically, rod temper is used. The wet soil of pre-calculated quantity in the specimen is compacted in to mould by means of the rod temper in two or three layers.
9.The permeameter assembly is placed in ____________ of the Jodhpur permeameter apparatus.
a) Bottom tank
b) Top of cylinder
c) Below the top plate
d) None of the mentioned
View Answer
Explanation: The permeameter assembly is placed in the bottom tank having a water outlet which permits control of water level.
Sanfoundry Global Education & Learning Series – Geotechnical Engineering.
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