is it too necessary to do internship in 4yrs of engineering life?? is it helpful for placement?

Hello Indu, it is often advisable since Internships provide you practical know-how's and assistance. you will understand all the theoretical aspects of engg more practically in internships. it will also benefit you while employing since you will have some practical knowledge in the field. so you bet

Even when it is not mandatory, it is advisable to do Internship for engineers as it makes them understand the practical aspects of all what they studied.