A. 15 minutes
B. 20 minutes
C. 30 minutes
D. 60 minutes
Related Mcqs:
- The area between the isohyets 45 cm and 55 cm is 100 square km and between 55 cm and 65 cm is 150 square km. The average depth of annua! precipitation over the above basin of 250 square km will be__________________?
A. 50 cm
B. 55 cm
C. 56 cm
D. 60 cm - The “outlet discharge factor” is the duty at the head of_________________?
A. main canal
B. branch canal
C. watercourse
D. distributory - The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called________________?
A. proportionality
B. flexibility
C. setting
D. sensitivity - Which of the following is a flexible outlet ?
A. submerged pipe outlet
B. Kennedy’s gauge outlet
C. Gibb’s outlet
D. none of the above - For a proportional outlet, the flexibility is______________?
A. zero
B. between zero and 1
C. 1
D. greater than 1 - The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be_________________?
A. 637 hectares/m3/sec
B. 837 hectares/m3/sec
C. 972 hectares/m3/sec
D. 1172 hectares/m3/sec - Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?
A. low sodium water
B. medium sodium water
C. high sodium water
D. very high sodium water - For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of_______________?
A. rabi or kharif
B. rabi and kharif or sugarcane
C. rabi and sugarcane or kharif and sugarcane
D. rabi or kharif or sugarcane - The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) will be________________?
A. V2 Q m3/sec
B. 0.5 Q mVsec
C. 2 Q m3/sec
D. 4 Q m3/sec - The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as__________________?
A. water conveyance efficiency
B. water application efficiency
C. water use efficiency
D. none of the above