VVDN

Written Test (Banglore 29-06-2013):-
I- 20 questions on aptitude.
II-20 questions on electronics.
III-20 questions on C.

The level of questions was average.
I am providing the questions of Electronics Section.

1-Unit of magnetic field.
2-Unit of resistivity.
3-Thevenin equivalent of the circuit.
4-find the voltage across the load,the figure will be provided.
5-find the equivalent capacitance,through the figure provided.
6-find the equivalent gate,gate will be made by BJT.
7-find the equivalent gate,gate will be made by Diode.
8-One multiplexer question.
9-value of charge on electron.
10-2 more question regarding the charge.
11-1 que of BJT circuit.
12-Effect of temperature on conductivity of the semiconductor.
13-Effect of temperature on conductivity of the conductor.
14-Find the resistance of the long wire(I dont know the question exactly)
15-1 que on transformer(simple)
16-1 que on steady state
17-1 que on majority carriers & minority carriers in BJT.


Technical Interview (1st round - Banglore):-

-> rectifier circuit (HW, FW, bridge.)

-> How to filter pulsating DC from full wave rectifier with circuit

-> How Capacitor alone acts as a filter.

Technical Interview (2nd round - Chennai):-    PART- 1

This interview started with electronics i.e. the same rectifiers and diodes.

Then switched onto some digital electronics questions like making gates using transistors,
black boxes with input/output conditions given

   1) input polarity changed then too output polarity remains same.

   2) changing duty cycle of pulse

-> Making Band pass and bandstop filters using low pass and high pass.

C programs:

  -> Multiplication.

  -> Power of 2.  (without loops)

Technical Interview (2nd round - Chennai):-    PART- 2

Embedded C (KEIL IDE) concepts

Explain UART protocol.

Write a C program for removing line from a file (For Embedded system)

Explain Termios.

Categories: Interview Purpous