Q1: In a fluid flow a particle may posses

ANS:E - all the above.

1. Elevation Energy: Elevation energy, also known as potential energy, is the energy possessed by a fluid particle due to its elevation above a reference level, such as a datum or a specific point in the system. It is typically measured in terms of the height of the fluid above the reference level and is directly related to the gravitational force acting on the fluid particle.
2. Kinetic Energy: Kinetic energy is the energy possessed by a fluid particle due to its motion. It is defined as 2KE=21​mv2, where m is the mass of the fluid particle and v is its velocity. Kinetic energy is directly proportional to the square of the velocity and represents the ability of the fluid particle to do work by virtue of its motion.
3. Pressure Energy: Pressure energy, also known as hydrostatic pressure energy, is the energy possessed by a fluid particle due to the pressure exerted on it by the surrounding fluid. It is defined as PE=P/ρ, where P is the pressure and ρ is the density of the fluid. Pressure energy represents the potential work that can be done by the fluid particle as it moves from one point to another in the fluid flow field.
4. Initial Energy: This term is a bit ambiguous. If it refers to the total energy possessed by a fluid particle at the initial state of the flow, then it could be considered correct. However, it's more common to refer to the different types of energy a particle possesses at any given point in the flow rather than just at the initial state.