Engineering
Location: Kalpakkam
Duration: 30 Minutes
Date: 10/06/2025
🧑💼 General Insight:
50% of the interview focused on work experience, demonstrating the importance of
industrial exposure alongside theoretical knowledge.
🔧 Technical Questions Asked:
1.Flexible Coupling
➤ What is a flexible coupling?
➤ Where is it used and why is it preferred over rigid coupling in misaligned shafts?
(Discuss torque transmission with slight misalignment compensation.)
2.Condenser Design in Power Plants
➤ Why can’t we lower the condenser pressure too much in a Rankine cycle?
(Hint: Risk of cavitation in turbines, large condenser size, low efficiency gains
beyond a point.)
3.Rankine Cycle
➤ Draw the basic Rankine cycle and explain each process.
(Cover isentropic compression, isobaric heat addition, isentropic expansion, and
isobaric heat rejection.)
4.Thermal vs. Nuclear Power Plants
➤ What are the key differences between the site selection criteria of thermal and
nuclear power plants?
(Discuss cooling needs, fuel supply, population density, safety, waste handling.)
5.Corrosion Phenomenon
➤ What type of corrosion occurs when a mild steel (MS) support is connected to a
stainless steel support?
Correct Answer: Galvanic corrosion
(Explain the electrochemical potential difference between dissimilar metals in an
electrolyte.)