1. Regulating works are designed for:
(A) Efficient navigation
(B) All of these
(C) Maintain water quality
(D) Prevent flooding
2. Head regulator is operated by:
(A) Gates
(B) Hydraulic jacks
(C) Manually
(D) None of these
3. Canal head regulator crest level is equal to:
(A) Depth of water in river/5
(B) Depth of water in river/2
(C) Depth of water in river/7
(D) Depth of water in river/3
4. Choose the correct statement:
(A) Head regulator controls the supply into canal
(B) Head regulator controls silt in canal
(C) All of these
(D) Head regulator controls discharge
5. _________ is a type of canal head regulator:
(A) Open flow regulation
(B) Silt flow regulation
(C) Flow control regulation
(D) All of these
6. Silt can be controlled at headworks by:
(A) Divide wall
(B) Hydraulic system
(C) Gates
(D) Fish ladder
7. Capacity of the excluded tunnel should be:
(A) 10%
(B) 30%
(C) 20%
(D) 50%
8. Minimum velocity through the tunnel should be:
(A) 2-3 m/s
(B) 2-5 m/s
(C) 1-2 m/s
(D) 2-4 m/s
9. The height of tunnel is kept _____ for sandy river and ______ for boulder stage river:
(A) 0.5 m & 1.0 m
(B) 1.0 m & 1.2 m
(C) 0.6 m & 1.0 m
(D) 0.6 m & 1.2 m
10. The radius of the bend of the tunnel varies:
(A) 5-7 times
(B) 10-15 times
(C) 7-10 times
(D) 5-15 times