Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: The Total Energy Line (TEL) in open channel or pipe flow is sum of pressure head, elevation head and velocity head of flowing fluid in respect to a reference line. Reason R: The Hydraulic Grade Line (HGL) under same conditions is obtained by subtracting velocity head from total energy line. In the light of the above statements, choose the most appropriate answer from the options given below

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is NOT the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Hint:

Important relations: \[ \boxed{ TEL = \frac{P}{\gamma} + \frac{V^2}{2g} + z } \] \[ \boxed{ HGL = \frac{P}{\gamma} + z } \] \[ \boxed{ TEL = HGL + \frac{V^2}{2g} } \]

Answer 1

The Correct Option is B