Polycab Wires Graduate Engineer Trainee (Get) Interview Questions and Answers

Q1. Why havells and where do u see yourself after 20 years.
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Q1. What are half wave and full wave rectifiers
Ans. 
Half wave and full wave rectifiers convert AC to DC, differing in efficiency and output waveform.
• Half Wave Rectifier: Uses one diode, allows only one half of AC waveform.

• Example: Simple power supply for low-power devices.

• Full Wave Rectifier: Uses two or four diodes, utilizes both halves of AC waveform.

• Example: More efficient power supply for higher power devices.

• Half wave produces pulsating DC, while full wave produces
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Q2. How can you filter a signal with ripples
Ans. 
Filtering signals with ripples involves using techniques to reduce unwanted oscillations while preserving desired signal characteristics.
• Use a low-pass filter to attenuate high-frequency ripples while allowing low-frequency signals to pass.

• Apply a moving average filter to smooth out rapid fluctuations in the signal.

• Consider using a Butterworth filter for a smooth frequency response with minimal ripples.

• Employ a Kalman ...read more
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Descriptive test, Electric circuits, C, Apptitude basics.

Q1. BTech project and explanation.
Ans. 
My BTech project was on developing a smart irrigation system using IoT technology.
• The project aimed to optimize water usage in agriculture by using sensors to detect soil moisture levels and weather conditions.

• The system would then automatically adjust the amount of water delivered to the crops through a network of valves and pumps.

• I used Arduino boards and Raspberry Pi for the hardware, and programmed the system using...read more
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Q2. Electric machines, power electronics
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Q1. Techincal + aptitude ,tecnical gate previous bits level bits
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Q1. Self intro and all basic questions
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Q1. Relocate ,and basic
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