Mechanical Engineering  Hydraulics and Fluid Mechanics
Exercise :: Hydraulics and Fluid Mechanics  Section 1
21. 
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch) 
A. 
C_{d} x b2gH  B. 
C_{d} x b2g x H  C. 
C_{d} x b2g x H^{3/2}  D. 
C_{d} x b2g x H^{2} 
Answer: Option C
Explanation:

22. 
The discharge through a siphon spillway is 
A. 
C_{d} x a2gH  B. 
C_{d} x a2g x H^{3/2}  C. 
C_{d} x a2g x H^{2}  D. 
C_{d} x a2g x H^{5/2} 
Answer: Option A
Explanation:

23. 
The maximum discharge over a broad crested weir is 
A. 
0.384 C_{d} x L x H^{1/2}  B. 
0.384 C_{d} x L x H^{3/2}  C. 
1.71 C_{d} x L x H^{1/2}  D. 
1.71 C_{d} x L x H^{3/2} 
Answer: Option D
Explanation:

24. 
In a venturimeter, the velocity of liquid at throat is __________ than at inlet. 
Answer: Option A
Explanation:

25. 
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where R_{N} = Reynold number) 
A. 
1/R_{N}  B. 
4/R_{N}  C. 
16/R_{N}  D. 
64/R_{N} 
Answer: Option C
Explanation:
