DSQ Placement Paper - Technical Questions

DSQ Previous Years Solved Sample Placement Papers

1. In a 4-bit R/2R ladder digital-to-analog converter, because of negative feedback, the operational amplifier keeps the inverting (minus) input near:
   (A) 5 volts
   (B) Zero volts
   (C) A voltage determined by the binary-weighted input
   (D) None of the above
   Ans: B
   
2. The hexadecimal number 4B16 is transmitted as an 8-bit word in parallel. What is the time required for this transmission if the clock frequency is 2.25 MHz?
   (A) 444 ns
   (B) 444 s
   (C) 3.55 s
   (D) 3.55 ms
   Ans: A
   
3. List which pins need to be connected together on a 7493 to make a MOD-12 counter.
   (A) 12 to 1, 11 to 3, 9 to 2
   (B) 12 to 1, 11 to 3, 12 to 2
   (C) 12 to 1, 11 to 3, 8 to 2
   (D) 12 to 1, 11 to 3, 1 to 2
   Ans: C
   
4. Choose the word which best expresses the meaning of the given word: EMBEZZLE
   (A) Misappropriate
   (B) Balance
   (C) Remunerate
   (D) Clear
   Ans: A
   
5. Choose the word which is the exact opposite of the given word: CROWDED
   (A) Busy
   (B) Congested
   (C) Quiet
   (D) Deserted
   Ans: D
   
6. Find the correctly spelt word:
   (A) Klaptomania
   (B) Klepptomania
   (C) Kleptemania
   (D) Kleptomania
   Ans: D
   
7. The ratio between the perimeter and the breadth of a rectangle is 5:1. If the area of the rectangle is 216 sq. cm, what is the length of the rectangle?
   (A) 16 cm
   (B) 18 cm
   (C) 24 cm
   (D) Data inadequate
   Ans: B
   
8. It is required to construct a counter to count up to 100 (decimal). The minimum number of flip-flops required to construct the counter is:
   

   (a) 8

   (b) 7

   (c) 6

   (d) 5

   (Ans: A)
9. A highly stable resonance characteristic is the property of a ____ oscillator:
   

   (a) Hartley

   (b) Colpitts

   (c) Crystal

   (d) Weinbridge

   (Ans: C)
10. The width of the depleted region of a PN junction is of the order of a few tenths of a ___________:
    

    (a) millimeter

    (b) micrometer

    (c) meter

    (d) nanometer

    (Ans: B)
11. Which is true about Servlets?
    

    (a) Only one instance of Servlet is created in memory

    (b) Multi-threading is used to service multiple requests

    (c) Both (a) & (b)

    (Ans: C)
12. What is a Temporary Servlet?
    

    (a) Servlet that is destroyed at runtime

    (b) Servlet that exists for a session

    (c) Servlet that is started and stopped for each request

    (Ans: C)
Electronics Based Questions
13. The breakdown mechanism in a lightly doped p-n junction under reverse biased condition is called:
    

    (a) avalanche breakdown

    (b) zener breakdown

    (c) breakdown by tunneling

    (d) high voltage breakdown

    (Ans: A)