The head loss through a siphon barrel is usually given by Unwin’s fo – McqOptions

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1.	The head loss through a siphon barrel is usually given by Unwin’s formula by neglecting velocity of approach as HL = [1 + F₁ + F₂. L/R] V²/2g, where F₁ and F₂ respectively represent the coefficient of head losses due to?
A.	Barrel friction and entry
B.	Entry and barrel friction
C.	Barrel friction and exit
D.	Exit and barrel friction
Answer» C. Barrel friction and exit

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