The given figure shows gradually varied flow in an open channel with a beak in bed slope. Types of water surface profiles occurring from left to right are
Options
A. H2 , S3
B. H2 , S2
C. H2 , M2
D. H3 , M2
Correct Answer
H2 , S2
UPSC Civil Service Exam Questions problems
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1. Activated sludge is the
Options
A. resultant sludge removable from the aeration unit
B. sludge settled in the humus tank
C. sludge in the secondary tank post-aeration rich in microbial mass
D. sludge.in the secondary tank post aeration, rich in nutrients.
Correct Answer: sludge in the secondary tank post-aeration rich in microbial mass
2. Consider the following statements : 1. An ascending gradient of 1 in 100 meets an ascending gradient of 1 in 120 to form a Valley curve. 2. A falling gradient of 1 in 25 meets a falling gradient of 1 in 50 to form a summit curve. 3. The length of summit curve is determined on the basis of head light sight distance. Which one of the statements given above is/are correct?
3. The figure refers to a channel section of uniform thickness of 1 cm used as a beam with the cross-sectional dimensions shown in cm units. If the Moment of Inertia of channel Ixx be equal to 246 cm4 and C be the shear centre, then the value of e in cm is equal to
4. The plastic modulus of a section is 5 x 10-4m3. Its shape factor is 1.2 and the plastic moment capacity is 120 kNm. What is the value of the yield stress of the material?
Correct Answer: For plotting of soundings in harbour area
9. Consider the following methods of preservation of timber : 1. Dipping 2. Brushing or spraying 3. Pressure impregnation The correct sequence in decreasing order of the effectiveness of these methods of preservation is