Discharge Over Rectangular Notch or Weir

Q. The approximate discharge over a 4 m long rectangular weir (with suppressed end contractions) with head over the crest as 0.36 m is

1. 4.2 litres/s
2. 2.4 $m^3/s$
3. 6.1 litres/s
4. 1.6 $m^3/s$

Q. If H is the head over the crest of a rectangular weir, the discharge varies as:

1. $H$
2. $H^{0.5}$
3. $H^{1.5}$
4. $H^{2.5}$

Q.

Relative error in Z, given that Z = 1/A² is________

Q.

The absolute percentage error in the computed discharge over a rectangular weir corresponding to an absolute error of 1.5% in the measurement of head over the sill of the weir would be

1. 1.5

2. 2.25

3. 2.5

4. 3.75

Q. Match List - I with List - II and select the correct answer using the codes given below the lists:
List - I
A. Rehbock formula
B. Francis formula
C. A special trapezoidal weir
D. Linear proportional weir

List - II
1. Sutro weir
2. Rectangular suppressed weir
3. Rectangular side-contracted weir
4. Cippolletti weir

Codes:

1. A B C D
   1 3 4 2
2. A B C D
   2 4 3 1
3. A B C D
   1 4 3 2
4. A B C D
   2 3 4 1