Civil engineering note

The structure provided at the junction of a canal and a natural drain is called:
A. Canal fall
B. Cross drainage work
C. Canal outlet
D. Escape

Which irrigation method has the highest water-use efficiency generally?
A. Flood irrigation
B. Furrow irrigation
C. Sprinkler irrigation
D. Drip irrigation

A cross regulator is generally constructed:
A. Across a canal
B. Along the bank of a river
C. At the head of a dam only
D. Below a bridge

Which of the following is a major loss of water from an unlined canal?
A. Evaporation only
B. Seepage
C. Transpiration only
D. Runoff

The main function of a canal regulator is to:
A. Measure rainfall
B. Control the discharge and water level in a canal
C. Increase seepage
D. Remove sediment from water

Lacey's theory is mainly related to:
A. Design of dams
B. Regime channels
C. Design of spillways
D. Canal lining

Which theory was developed by A.N. Khosla for canal design?
A. Regime theory
B. Critical velocity theory
C. Theory of independent variables
D. None of these

The relationship between Duty (D), Delta (Δ) and Base Period (B) is:
A. Δ = DB/8.64
B. Δ = 8.64D/B
C. Δ = B/8.64D
D. Δ = 8.64B/D

Duty of water is defined as:
A. Depth of water required by a crop
B. Area of land irrigated by one cumec of water flowing continuously during the base period
C. Total rainfall received by a crop
D. Discharge of a canal

Which of the following is the main purpose of irrigation?
A. To control floods
B. To supply water to crops when rainfall is insufficient
C. To increase soil erosion
D. To reduce groundwater level