Question

Energy gradient line takes into consideration

(a) potential and kinetic heads only

(b) potential and pressure heads only

(c) kinetic and pressure heads only

(d) potential, kinetic and pressure heads

The question was posed to me during an interview.

Question is from Hydraulic Gradient and Total Energy Line in section Flow Through Pipes of Fluid Mechanics

Answer 1

Right option is (d) potential, kinetic and pressure heads

To explain: EGL is obtained by plotting total head at various points along the axis of the pipe.

where H is the total head, P / γ is the pressure head, z is the potential head and v^2 / 2g is the velocity head. Hence, EGL is also called Total Energy Line (TEL).