DRDO question papers for STA B?

From where I can get the previous year question papers of DRDO for the post of STA B (Electronics and Communication Engineering) will you please provide me that???????

[Raman Vij]

As you want to get the previous year question papers of DRDO for the post of STA B (Electronics and Communication Engineering) so, here for you I am providing you the same.

Here is an attachment for the question papers of and some of the questions are given below.

Q.1:- The resistance of a strip of copper of rectangular cross-section is 2Ω. A metal of resistivity twice that of copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be (a) 6Ω (b) 4/3Ω (c) 3/2Ω (d) 3/4Ω

Q.2:- The electric field lines and equipotential lines (a) Are parallel to each other. (b) Are one and the same. (c) Cut each other orthogonally. (d) Can be inclined to each other at any angle.

Q.3:- For an SCR, di/dt protection is achieved through the use of (a) R in series with SCR. (b) L in series with SCR. (a) RL in series with SCR. (c) RLC in series with SCR.

Q.4:- In a linear system, an input of 5 sin wt produces an output of 10 cos wt. The output corresponding to input 10 cost wt will be equal to (a) + 5 sin wt (b) - 5 sin wt (c) + 20 sin wt (d) – 20 sin wt.

Q.5:- For the system shown in figure, with a damping ratio § of 0.7 and an undamped natural frequency w𝑛 of 4 rad / sec, the values of K and are (a) K = 4, a = 0.35 (b) K = 8, a = 0.455 (c) K = 16, a = 0.225

Q.6:- A single instruction to clear the lower four bits of the accumulator I 8085 assembly language is: (a) XRI OHF (b) ANI FOH (c) XRI FOH (d) ANI OFH.

Q.7:- The p-type substrates in a conventional pn-junction isolated integrated circuit should be connected to: (a) Nowhere, i.e., left floating. (b) A dc ground potential. (c) The most positive potential available in the circuit. (d) The most negative potential available in the circuit.

Q.8:- The velocity of electromagnetic ratio waves is (a) 3 x 106m/s (b) 3 x 108m/s (c) 3 x 1010m/s (d) 3 x 1012m/s

Q.9:- A certain 8- bit microprocessor executes “SUB A, B” by loading B to the ALU, then loading A to the ALU, Subtracting A from B, and storing the result in B. Which of the following instructions would cause the ZERO flag to be set? (a) SUB – (X), (X) + (b) SUB )X), (X) + (c) SUB – ( X), (X) (d) all of the above

Q.10:- which of the following induction motor will have the least shaft diameter? (a) 20 HP, 2880 rpm (b) 20 HP, 1440 rpm (c) 20 HP, 960 rpm (d) 20 HP, 730 rpm

For detailed question papers here is an attachment you can download that.

DRDO question papers







I think that this will helpful to you……….

[NAVEENKUMAR431]

wr iget the qn paperss for sta-b electronics