BARC interview questions

6 interviewers were over sitting there.

First one-when did you reach at mumbai?

Me-yesterday

First one-what are your fav subjects

Me- control system, digital electronics, semiconductor devices

First-two more

Me-signal systems, 8285 microprocessor

(always prepare five fav subjects. Both the times they asked 5 fav subjects)

Then they asked some questions:

First-design a control system for a water tank that starts filling water if level becomes less than 20% and vice versa for 80%

first-which type of control system used in lift? PD, PI or PID?

First-draw the response of underdamped and overdamped system for unit ramp input.

First-what is adaptive control system?

Second-design a digital circuit for a show like india got talent that selects the participant if three or more judges say yes.consider total no. of judges are 5.

Second- design a counter that counts the time in microseconds when husen bolt runs 100 mtrs race.

Second- what is the difference between ripple counter and synchronous counter

Second- what is the difference between synchronous counter with ripple carry and synchronous counter without ripple carry?

Second-can we connect TTL logic family to CMOS logic family directly and if yes then how?

Third-what is single super beta transistor?

Third-how can we make single stage super beta transistor?

Third-how can we improve the current gain of transistor?

Third-explain how can we determine the depletion width of the pn junction?

Third- design a circuit that generate the triangular wave with the help of rectangular wave.but the result must be pure triangular.

Fourth- (he drawn a triangular wave and asked to me)-determine the fundamental frequency component and all the harmonics of this wave.

Fifth-What is DMA?

Fifth-what is the size single interrupt?

Fifth-difference between maskable and non maskable

Fifth—address of TRAP

Fifth-descrive the pins of 8085

Fifth-what is address multiplexing

Fifth-what is the function of SIM & RIM

Fifth-if a program is under process and interrupt signal enables then ?

Sixth-what is the function of RESET pin

Sixth-ok thanq

(I forget many questions that I didn’t mentioned. It took around 1 hour)