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Hydraulics

Q1: Pick up the correct statement regarding Borda's mouth piece running full from the following :

A Actual velocity at the out let is gH

B Theoretical velocity at the outlet is 2gH

C Coefficient of velocity is 1/2

D Coefficient of contraction is 1

E All the above.

ANS:E - All the above.

The correct statement regarding Borda's mouthpiece running full is: "The discharge through Borda's mouthpiece is maximum when the head of water over the mouthpiece is three times the velocity of approach head." This statement refers to the condition for achieving maximum discharge through Borda's mouthpiece. When the head of water over the mouthpiece is three times the velocity of approach head, the mouthpiece runs full and the discharge is maximized. This condition is based on Bernoulli's equation and the principle of conservation of energy in fluid flow.

 



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