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For the Bernoulli's equation to be applicable in a fluid flow situation, which of the following conditions is/are to be satisfied:

1. Fluid should be frictionless
2. Fluid should be incompressible
3. Flow should be steady
4. Flow should be rotational

Correct answer: Fluid should be frictionless

Solution

Bernoulli's equation assumes that the fluid has no viscosity, meaning it behaves as a frictionless fluid. This allows for the conservation of mechanical energy along a streamline, which is a fundamental aspect of the equation.

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