Question

Bernoulli’s principle is derived from which of the following?

(a) Conservation of mass

(b) Conservation of energy

(c) Newton’s law of motion

(d) Conservation of momentum

The question was posed to me during an interview.

My query is from Bernoulli’s Equation in portion Inviscid & Incompressible Flow of Aerodynamics

Answer 1

The correct option is (b) Conservation of energy

To elaborate: It states that the sum of all the forms of energy in flow is the same at all the points in that flow field. The energy here refers to kinetic energy, potential energy and internal energy.