MEL Systems and Services Interview Questions and Answers

Q1. Basic questions about Electrical machines, PLC, Electrical Circuits
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Q1. Explain about your project
Ans. 
Developed an IoT-based smart irrigation system to optimize water usage in agriculture.
• Utilized sensors to monitor soil moisture levels.

• Implemented a microcontroller (Arduino) for data processing.

• Created a mobile app for real-time monitoring and control.

• Integrated weather data to adjust irrigation schedules.

• Conducted field tests, resulting in a 30% reduction in water usage.
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Q2. What are the working principles of RCCB (Residual Current Circuit Breaker) and MCB (Miniature Circuit Breaker)?
Ans. 
RCCB protects against earth faults, while MCB safeguards against overloads and short circuits in electrical circuits.
• RCCB detects imbalance between live and neutral wires, indicating leakage current.

• Example: If a person touches a live wire, the RCCB trips to prevent electric shock.

• MCB automatically switches off when current exceeds a preset limit, preventing overheating.

• Example: An MCB trips when too many devices are c...read more
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Just normal data structures and programming syntax

The duration is for 90 minutes its a pen and paper test.It contain 3 sections technical,aptitute and verbal ability

1hr for technical apptitude about the python

Q1. What is DRF What is MVT DJANGO
Ans. 
DRF stands for Django Rest Framework, a powerful and flexible toolkit for building Web APIs in Django. MVT is the Model-View-Template architecture pattern used in Django.
• DRF is a third-party library built on top of Django that simplifies the process of building APIs in Django.

• DRF provides features like serialization, authentication, and viewsets to streamline API development.

• MVT is the architectural pattern used in Dja...read more
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