Discussion
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- Question
In a circular pipe of length L and diameter d, a viscous liquid is flowing with a velocity v. The loss in head, is
Options- A.
- B.
- C.
- D.
- E. none of these.
- Correct Answer
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- 1. The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is
Options- A. water hammer
- B. hydraulic jump
- C. critical discharge
- D. none of these. Discuss
- 2. Product of Renold number, Froud's number and Mach number is :
Options- A.
- B.
- C.
- D.
Discuss
- 3. The property of steam function ? is :
Options- A. ? is constant everwhere on any stream line
- B. the flow around any path in the fluid is zero for continuous flow
- C. the rate of change of ? with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction
- D. the velocity vector may be found by differentiating the stream function
- E. all the above. Discuss
- 4. Differential manometers are used to measure
Options- A. pressure in water channels, pipes, etc.
- B. difference in pressure at two points
- C. atmospheric pressure
- D. very low pressure. Discuss
- 5. A pipe of 0.1 m2 cross sectional area suddenly enlarges to 0.3 m2 cross-sectional area. If the discharge of the pipe is 0.3 m3 /sec, the head loss is
Options- A. 2/g m of water
- B. g/2 m of water
- C. 1g m of water
- D. g m of water. Discuss
- 6. The coagulant widely used for sewage treatment, is
Options- A. alum
- B. ferric chloride
- C. ferric sulphate
- D. chlorinated copperas. Discuss
- 7. The gas which may cause explosion in sewers, is
Options- A. carbondioxide
- B. methane
- C. ammonia
- D. carbon monoxide. Discuss
- 8. Assertion (A) : Discharging the effluents from the oxidation ponds just up stream of lakes or reservoirs is undesirable.
Reason (R) : The discharged algae get settled in the reservoirs and cause anaerobic decomposition and other water qualities.
Options- A. Both A and R are true and R is the correct explanation of A
- B. Both A and R are true but R is not a correct explanation of A
- C. A is true but R is false
- D. A is false but R is true. Discuss
- 9. In a fully mechanised composting plant, involves
Options- A. mechanized receipt
- B. mechanized segregation
- C. mechanized pulverising of refuse
- D. all of these. Discuss
- 10. In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is
Options- A. 2.25
- B. 2.50
- C. 2.55
- D. 2.65
- E. 2.75 Discuss
Hydraulics problems
Search Results
Correct Answer: hydraulic jump
Correct Answer:
Correct Answer: all the above.
Correct Answer: difference in pressure at two points
Correct Answer: 2/g m of water
Correct Answer: ferric chloride
Correct Answer: methane
Correct Answer: Both A and R are true and R is the correct explanation of A
Correct Answer: all of these.
Correct Answer: 2.65
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