Discussion
Home ‣ Civil Engineering ‣ Irrigation Comments
- Question
The ratio of the head recovered to the head put in, is known as
Options- A. efficiency
- B. sensitivity
- C. flexibility
- D. modular limit.
- Correct Answer
- efficiency
- 1. If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to
Options- A. m
- B. m3
- C. m1/2
- D. m1/3
- E. m2/3 Discuss
- 2. Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on
Options- A. left side
- B. right side
- C. both sides
- D. all the above. Discuss
- 3. Cross regulators in main canals are provided
Options- A. to regulate water supply in the distributaries
- B. to increase water head upstream when a main canal is running with low supplies
- C. to overflow excessive flow water
- D. none of these. Discuss
- 4. Process of meandering is due to
Options- A. sediment load of streams
- B. discharge and hydraulic properties of streams
- C. relative erodibility of the bed and banks
- D. all the above. Discuss
- 5. Effective precipitation for a crop may be defined as
Options- A. total precipitation minus the loss due to evaporation
- B. total precipitation minus the loss due to infiltration
- C. total precipitation during the crop period
- D. available water stored in soil within root zone of the crop. Discuss
- 6. The water face of the guide banks, is protected by
Options- A. one men stone pitching
- B. two man stone pitching
- C. three man stone pitching
- D. four man stone pitching
- E. five man stone pitching. Discuss
- 7. To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls
Options- A. of R.C.C. or steel plate 8 cm thick
- B. of height l/3rd to l/4th the depth of water in the main canal
- C. spaced at interval of
times their heights - D. extending about one metre beyond a line drawn at an inclination of 2 : 1 to the axis of main canal
- E. all the above. Discuss
- 8. In a concrete canal the approximate permissible velocity of water should not exceed
Options- A. 0.5 m/sec
- B. 1 m/sec
- C. 1.5 m/sec
- D. 2 m/sec
- E. 2.5 m/sec Discuss
- 9. If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle ? with horizontal, the hydraulic mean depth is
Options- A. D
- B. D/2
- C. D/3
- D. D/4
- E. D/5 Discuss
- 10. The ratio of the rate of change of discharge of an outlet and parent channel, is known as
Options- A. efficiency
- B. sensitivity
- C. flexibility
- D. modular limit. Discuss
Irrigation problems
Search Results
Correct Answer: m1/2
Correct Answer: all the above.
Correct Answer: to increase water head upstream when a main canal is running with low supplies
Correct Answer: all the above.
Correct Answer: available water stored in soil within root zone of the crop.
Correct Answer: one men stone pitching
Correct Answer: all the above.
Correct Answer: 2 m/sec
Correct Answer: D/2
Correct Answer: flexibility
Explanation:
Flexibility: It provides a criteria for judging the behaviour of modules and semi-modules. It is generally denoted by letter 'F'. It is the ratio of the rate of change of outlet discharge to the rate of change of discharge of the parent channel.
Comments
There are no comments.More in Civil Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.