I applied through university. I interviewed at e-con Systems (Chennai) in Jul 2017
Interview
First puzzle test and second round is technical.those who cleared puzzle attended software test .then technical hr and hr round. Technical we have basic electronics question . U should prepare microprocessor, circuit theory, circuit basic, electronic devices.
Interview questions [2]
Question 1
In puzzle test , a small town, there are three temples in a row and a well in front of each temple. A pilgrim came to the town with certain number of flowers.
Before entering the first temple, he washed all the flowers he had with the water of well. To his surprise, flowers doubled. He offered few flowers to the God in the first temple and moved to the second temple. Here also, before entering the temple he washed the remaining flowers with the water of well. And again his flowers doubled. He offered few flowers to the God in second temple and moved to the third temple. Here also, his flowers doubled after washing them with water. He offered few flowers to the God in third temple.
There were no flowers left when pilgrim came out of third temple and he offered same number of flowers to the God in all three temples. What is the minimum number of flowers the pilgrim had initially? How many flower did he offer to each God?
I applied through university. I interviewed at e-con Systems (Chennai) in Mar 2026
Interview
They ask about microprocessor, microcontroller and project explanation. What is capacitor, what is inductor, Draw and explain about nand gate. What is number system, octal to binary conversion. Self introduction, some circuit diagrams are given and also said to solve.
You apply through company website, LinkedIn, or referral.
HR shortlists based on resume, skills, and experience.
C programming concepts (pointers, structures, memory)
Microcontrollers (ARM, PIC, etc.)
Communication protocols (UART, SPI, I2C, CAN)
Interrupts
RTOS basics
Debugging methods
Interview questions [1]
Question 1
Dso triggering modes
Ammeter voltage in connected above circuit
First stage was the written test. It contains general aptitude and electrical and electronics questions with two sets. One is MCQ and other one is theoretical. And ,then depends upon the performance the interview begins.
Interview questions [1]
Question 1
They asked about the circuits, but it was too difficult.
