INTERVIEW-12

FEEDBACKINFRA

www.feedbackinfra.com

Name

AKSHAY MANOJ GAWADE

Branch

ELECTRICAL

College

Sardar Patel College of Engg.

Company

Feedback Infra

Month and year of interview

26/10/2015

Company profile

Design of thermal Power Plants, Laying of transmission Lines, Construction etc.

Hardness Level of Interview

5

Group Discussion Topic

Renewable Energy in India

Technical Round

*Design of Pump and Motor for Agricultural Well

Approach:

General things I considered were Area of Land, Amount of water(depends on type of crop), Duty cycle of motor per day etc.
From these data I got some specifications for pump like

·         Flow Rate(Q)

·         Cross section area of Pipe etc.

·         water head(h)

·         Density of water(rho)

·          Max. Distance up to where water is to be provided etc.

 Considering these parameters, interviewer told me to derive an expression for rating of Induction Motor. Then I simply combined all units, broke them in SI units, compared with SI unit of Watts(P) and got the answer as P=Q*(rho)*g*h.

So basically in this question it was not about the right answer, they were trying to test your approach if you are told to design something.

Other questions asked were on:

* IDMT curves

* what happens when S.C. current in panel flows for time greater than rated S.C. withstand capacity of Breaker

* 3-4 questions framed on 3 feeders having CB with different tripping time

* How a bus bar loses its mechanical strength


HR round

No questions asked

Any advice

      The panelists wanted the interviewees to relate Electrical Engg. with Mechanical.

Don't  give up even if you don't know the Answer!!!