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- Question
The phreatic line in an earth dam may be
Options- A. circular
- B. elliptical
- C. parabolic
- D. a straight line
- E. all the above.
- Correct Answer
- parabolic
- 1. Pick up the correct statement from the following :
Options- A. the lines of sight while observing back sight and fore sight lie in the same horizontal plane
- B. the staff readings are measurements made vertically downwards from a horizontal plane
- C. the horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis
- D. all the above. Discuss
- 2. For efficient working of a sewer, it must be ensured that
Options- A. minimum velocity of 0.45 m/sec, is maintained at its minimum flow
- B. a maximum velocity of 0.90 m/sec, is maintained at its maximum flow
- C. both (a) and (b)
- D. neither (a) nor (b). Discuss
- 3. If ?w is the unit weight of water, r the hydraulic mean depth of the sewer and S the bed slope of the sewer, then the tractive force exerted by flowing water, is
Options- A. ?w . r . S
- B. ?w r1/2 . S
- C. ?w r S
- D. ?w r2/3 S Discuss
- 4. Pick up the correct statement from the following :
Options- A. Rate of digestion of slugde is more at higher temperature
- B. Thermophilic organisms digest the sludge if the temperature ranges from 40° to 60°C
- C. Mesophilic organisms digest the sludge if the temperature is between 25° and 40°C
- D. 90% of digestion takes place in 30 days at 29°C, the optimum mesophilic temperature
- E. All the above. Discuss
- 5. While preparing a detailed estimate
Options- A. Dimension should be measured correct to 0.01 m
- B. Area should be measured correct to 0.01 sqm
- C. Volume should be measured correct to O.Olcum
- D. All the above. Discuss
- 6. The percentage of minimum reinforcement of the gross sectional area in slabs, is
Options- A. 0.10%
- B. 0.12%
- C. 0.15%
- D. 0.18%
- E. 0.20% Discuss
- 7. The ratio of discharge and plan area of a continuous flow type settling tank, is known
Options- A. surface loading
- B. overflow
- C. overflow rate
- D. all the above. Discuss
- 8. The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
Options- A. conversion into crystals
- B. it from burning
- C. it from explosion
- D. none of these. Discuss
- 9. In Chezy's formula V = C rs for calculating the velocity of flow in circular sewer of diameter D running full, the value of hydraulic mean radius is
Options- A. D
- B.
- C.
- D.
- E.
Discuss
- 10. A pug mill is used for
Options- A. softening brick earth
- B. moulding brick earth
- C. tempering brick earth
- D. providing brick earth
- E. all the above. Discuss
More questions
Correct Answer: all the above.
Correct Answer: both (a) and (b)
Correct Answer: ?w . r . S
Correct Answer: All the above.
Correct Answer: All the above.
Correct Answer: 0.15%
Correct Answer: all the above.
Correct Answer: conversion into crystals
Correct Answer:
Correct Answer: tempering brick earth
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