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1. Written test:  20 questions from Electronics  20 from ‘C’  Some descriptive questions from Linux, C++, RTOS (10 Q very simple) ELECTRONICS According to me, you should know basic electronics. No need to worry that VVDN paper is of GATE level it is not like that, VVDN questions was very simple if u refer your basic electronics subjects that will be sufficient for you. Here I am mentioning some of the topics/question asked in VVDN Diode: Basic knowledge of all diodes like PN junction diode, LED, tunnel, Zener etc (Symbol, working) Transistor: transistor as amplifier, as switch, and some basics, logic gate made by transistors Network Analysis: asked more questions from this portion like find current in a particular node, voltage drop in a branch of n/w, Wheatstone bridge circuit etc. Digital: basic of flip flops, shift registers, counters etc. Others: OP-amp - inverting, non-inverting etc ‘C’ Concentrate more on preprocessor, macros replacement, pointers, string and array based questions, bit field also. One suggestion for my side that for any interview there will be ‘C’, so prepare “C IN DEPTH” back exercise and if possible “TEST UR C SKILLS”. Third part In this part there were some descriptive questions of 1 marks like 1. Write name of three boot loaders. 2. Write name of three RTOS. 3. Difference between RTOS and GPOS. 2nd ROUND (Technical) Most of the questions from question paper as I already mention above. More questions from Hardware 1. While pointing at a question from paper they asked that if I replace this DC source with AC what happen. 2. Some questions regarding voltage drop in diode, in led etc from paper. 3. Some questions from my Project in B.Tech and Vector. 4. They ask me to describe any of the practical hardware work or project I did in my life, so I describe them a small work of creating a circuit of decoration lights whatever I did at my home. 5. What is IPC 6. Why we need IPC, relation between IPC and memory storage etc 3rd ROUND (Technical + HR) They asked more questions from Virtual memory concept like 1. Project mentioned in my resume. 2. What is virtual memory? 3. Difference between virtual and physical memory and related stuff. 4. From OP- amp they asked formula for inverting amplifier, if there is no feedback what happened. 5. OP-amp as amplifier. 6. Again some question from paper whatever I have NOT solved, they asked me try to solve it. They have NOT asked any of HR question from me. Remember “CONFIDENCE IS A KEY OF SUCCESS”. I was fully confidant during my interview this was my strength. So be confidant, believe in yourself and get a good job.
avatar

Embedded Software Engineer

Interviewed at VVDN Technologies

3.4★
Dec 6, 2017

1. Written test:  20 questions from Electronics  20 from ‘C’  Some descriptive questions from Linux, C++, RTOS (10 Q very simple) ELECTRONICS According to me, you should know basic electronics. No need to worry that VVDN paper is of GATE level it is not like that, VVDN questions was very simple if u refer your basic electronics subjects that will be sufficient for you. Here I am mentioning some of the topics/question asked in VVDN Diode: Basic knowledge of all diodes like PN junction diode, LED, tunnel, Zener etc (Symbol, working) Transistor: transistor as amplifier, as switch, and some basics, logic gate made by transistors Network Analysis: asked more questions from this portion like find current in a particular node, voltage drop in a branch of n/w, Wheatstone bridge circuit etc. Digital: basic of flip flops, shift registers, counters etc. Others: OP-amp - inverting, non-inverting etc ‘C’ Concentrate more on preprocessor, macros replacement, pointers, string and array based questions, bit field also. One suggestion for my side that for any interview there will be ‘C’, so prepare “C IN DEPTH” back exercise and if possible “TEST UR C SKILLS”. Third part In this part there were some descriptive questions of 1 marks like 1. Write name of three boot loaders. 2. Write name of three RTOS. 3. Difference between RTOS and GPOS. 2nd ROUND (Technical) Most of the questions from question paper as I already mention above. More questions from Hardware 1. While pointing at a question from paper they asked that if I replace this DC source with AC what happen. 2. Some questions regarding voltage drop in diode, in led etc from paper. 3. Some questions from my Project in B.Tech and Vector. 4. They ask me to describe any of the practical hardware work or project I did in my life, so I describe them a small work of creating a circuit of decoration lights whatever I did at my home. 5. What is IPC 6. Why we need IPC, relation between IPC and memory storage etc 3rd ROUND (Technical + HR) They asked more questions from Virtual memory concept like 1. Project mentioned in my resume. 2. What is virtual memory? 3. Difference between virtual and physical memory and related stuff. 4. From OP- amp they asked formula for inverting amplifier, if there is no feedback what happened. 5. OP-amp as amplifier. 6. Again some question from paper whatever I have NOT solved, they asked me try to solve it. They have NOT asked any of HR question from me. Remember “CONFIDENCE IS A KEY OF SUCCESS”. I was fully confidant during my interview this was my strength. So be confidant, believe in yourself and get a good job.

1. Written test- 50 questions to be attempted in 1 hour. Aptitude, basic understanding of C and electronic engineering concepts are tested. 2. HR interview- a random technical topic is allotted, and you're given time to prepare for a discussion about the topic. This is done to test your ability to comprehend technical details in a short duration, language and presentation skills. Discussion is followed by regular HR questions. Tech interview- I was asked to write a program on bits and arrays with some questions about random C topics.
avatar

Embedded Software Engineer

Interviewed at Lekha Wireless Solutions

4.1★
Jan 15, 2018

1. Written test- 50 questions to be attempted in 1 hour. Aptitude, basic understanding of C and electronic engineering concepts are tested. 2. HR interview- a random technical topic is allotted, and you're given time to prepare for a discussion about the topic. This is done to test your ability to comprehend technical details in a short duration, language and presentation skills. Discussion is followed by regular HR questions. Tech interview- I was asked to write a program on bits and arrays with some questions about random C topics.

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