Q. Bernoulli's theorem is based on :

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Solution:

Bernoulli's theorem states that when an incompressible and non-viscous liquid (or gas) flows in stream-lined motion from one place to another then at every point in its path the total energy per unit volume
(i.e., pressure energy kinetic energy potential energy) is constant.
That is constant
Thus, Bernoulli's theorem is in one form, the principle of conservation of energy for-a flowing liquid (or gas).
Dividing the Bemoulli's equation be . we have
constant
In this expression is called the 'pressure head', the 'velocity head' and the 'gravitational head'.