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- Question
The normal values of over flow rates for secondary sedimentation tanks, ranges between
Options- A. 25, 000 to 35, 000 litres/sqm/day
- B. 40, 000 to 50, 000 litres/sqm/day
- C. 50, 000 to 60, 000 litres/sqm/day
- D. 80, 000 to 10, 000 litres/sqm/day
- E. none of these.
- Correct Answer
- 25, 000 to 35, 000 litres/sqm/day
- 1. Lug angle is
Options- A. used with single angle member
- B. not used with double angle member
- C. used with channel member
- D. all the above. Discuss
- 2. In trickling filter, B.O.D. is reduced to
Options- A. 30 to 40%
- B. 40 to 60%
- C. 60 to 80%
- D. 80 to 90%
- E. 95%. Discuss
- 3. The length of the side of warning sign boards of roads is
Options- A. 30 cm
- B. 40 cm
- C. 45 cm
- D. 50 cm Discuss
- 4. The normal value of over flow rates for plain primary sedimentation tanks, ranges between
Options- A. 25, 000 to 35, 000 litres/sqm/day
- B. 40, 000 to 50, 000 litres/sqm/day
- C. 50, 000 to 60, 000 litres/sqm/day
- D. 80, 000 to 100, 000 litres/sqm/day
- E. none of these. Discuss
- 5. If the width b and depth d of a beam simply supported with a central load are interchanged, the deflection at the centre of the beam will be changed in the ratio of
Options- A. b/d
- B. d/b
- C. (d/b)2
- D. (b/d)2
- E. (b/d)3. Discuss
- 6. In water bound macadam roads, binding material, is
Options- A. sand
- B. stone dust
- C. cement
- D. brick dust. Discuss
- 7. Snow cover on the earth surface :
Options- A. gives the highest reflectance in the visible spectrum
- B. shows marked variation in its reflectance characteristics
- C. Shows side variation in the grain size
- D. All the above Discuss
- 8. The recommended detention period for grit chambers is
Options- A. 1 minute
- B. 2 minutes
- C. 3 minutes
- D. 5 minutes. Discuss
- 9. When a brick is immersed in water for 24 hours and then dried, if
Options- A. no grey or white deposits appear on the surface, the brick is free from soluble salts
- B. 10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence
- C. 50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence
- D. All the above. Discuss
- 10. Indian Railways detects the rail flow by
Options- A. Mitsubish Rail flow dector
- B. Soni Rail flow dector
- C. Audi-gauge Rail flow detector
- D. Kraut Kramer Rail flow detector. Discuss
More questions
Correct Answer: all the above.
Correct Answer: 60 to 80%
Correct Answer: 45 cm
Correct Answer: 40, 000 to 50, 000 litres/sqm/day
Correct Answer: (b/d)2
Correct Answer: stone dust
Correct Answer: All the above
Correct Answer: 1 minute
Correct Answer: All the above.
Correct Answer: Kraut Kramer Rail flow detector.
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