Tech Mahindra Diploma Electrical Engineer Interview Questions, Process, and Tips

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Q1. Explain the solar energy
Ans. 
Solar energy is the energy derived from the sun's radiation, which can be converted into electricity or used for heating purposes.
• Solar energy is renewable and sustainable, making it an environmentally friendly energy source.

• Solar panels are used to capture sunlight and convert it into electricity through the photovoltaic effect.

• Solar energy can be used for various applications such as powering homes, businesses, and e...read more
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Q2. Explain the solar power plant
Ans. 
A solar power plant is a facility that converts sunlight into electricity using photovoltaic panels or mirrors to concentrate solar energy.
• Solar panels or mirrors capture sunlight and convert it into electricity through the photovoltaic effect

• The electricity generated can be used to power homes, businesses, or even entire cities

• Solar power plants can be either photovoltaic (PV) or concentrated solar power (CSP) systems

• ...read more
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Q3. Explain the solar energy translation and distribution
Ans. 
Solar energy is converted into electricity through photovoltaic cells and then distributed through a grid system.
• Solar energy is captured by solar panels, which contain photovoltaic cells that convert sunlight into electricity.

• The electricity generated is then fed into an inverter, which converts it from direct current (DC) to alternating current (AC) for use in homes and businesses.

• The AC electricity is then distribut...read more
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Q4. Explain the solar power plant maintenance
Ans. 
Solar power plant maintenance involves regular cleaning of panels, inspection of components, and monitoring of performance.
• Regularly clean solar panels to remove dirt and debris that can reduce efficiency

• Inspect components such as inverters, wiring, and batteries for any signs of wear or damage

• Monitor performance metrics like energy output and system efficiency to identify any issues early

• Schedule regular maintenance c...read more
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Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

Q1. 
Sum of Two Numbers Represented as Arrays
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...read more
Ans. 
Given two numbers represented as arrays, calculate their sum and return the result as an array.
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other by considering the remaining digits

• Ensure the final sum array does not have any leading zeros
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Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.