[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_column_text]DIGITAL & APTITUDE QUESTIONS (1 TO 35)
————————————–

Aptitude Questions:

1. Find the remainder when 231 is divided by 5?

(A) 4 (B) 3 (C) 2 (D) None of these

2. A, B and C enter into partnership, A invests 3 times as much as B and B invests two-third of what C invests. At the end of the year, the profit earned is Rs. 6600. What is the share of B?
(A) Rs. 1500 (B) Rs. 1200 (C) Rs. 1000 (D) Rs. 800

3. How many words of 4 consonants and 3 vowels can be made from 12 consonants and 4 vowels, if all the letters are different?

(A) 16C7×7! (B) 12C3×4C4 (C) 12C4×4C3×7! (D) 12C4×4C3

4. There are 576 boys and 448 girls in a school that are to be divided into equal sections of either boys or girls alone. Find the minimum total number of sections thus formed.
(a) 24 (b) 32 (c) 16 (d) 20

5. Find the least number which when divided by 5, 6 and 7 and leaves a remainder 3, but when divided by 9 leaves no remainder.

(A) 288 (B) 213 (C) 207 (D) 423

6. In a store a dress tagged at RS 800 was offered at a discount of 12.5% when it did not sell at owner price an additional discount of 10%was offered .what was the final selling price?
(A) 630 (B) 650 (C) 550 (D) None of these

7. If toffees are bought at the rate 18 for a rupee than how many of them must be sold for a rupee to gain 20%?
(A) 16 (B) 12 (C) 14 (D) 15

8. A, B and C start a business each investing Rs 20,000 After 5 months A withdrew Rs.6000 B withdrew Rs. 4000 and C invests Rs. 6000 more. At the end of the year, a total profit of Rs. 69,900 was recorded. Find the share of each?
(A) Rs. 28200, 21200, 20500 (B) Rs. 20500, 28200, 21200
(C) Rs. 21200, 20500, 28200 (D) Rs. 20500, 21200, 28200

9. A started a business with a capital of Rs. 10000 and 4 month later, B joined him with a capital of Rs. 5000.What is the share of A in the total profit of Rs. 2000 at the end of the year?

(A) Rs. 1500 (B) Rs. 1800 (C) Rs. 1600 (D) Rs. 1700

10. P started a business by investing Rs 2,700 after sometime Q joined him by investing Rs 2,025. At the end of one year, the profit was divided in the ratio 2:1 After how many months did Q joined the business? [TCS]
(A) 3 (B) 4 (C) 6 (D) 9

11. A mixture contains brandy and water in the ratio 8: x. When 33 litres of the mixture and 3 litres of water are mixed, the ratio of brandy and water becomes 2:1.The value of x is:
(A) 5 (B) 3 (C) 7 (D) none of these

12. A trader has 100 kg of rice, a part of which he sells at 30% profit and the rest at 5% profit. He gains 25% on the whole. What is the quantity sold at 30% gain?
(A) 80 kg (B) 40 kg (C) 75 kg (D) 35 kg

13. Peter borrows Rs 10000 at 20 % p. a. for 5 years at simple interest. From fourth year onwards, on the entire amount due at the end of three years, the lender begins to charge 20% p. a. compounded annually. What is the amount repaid by Peter after five years from the beginning?
(a) 23040 (b) 22500 (c) 21000 (d) 19900

14. In a class 52 students, 25% are rich and other are poor. There are 20 females in the class, of whom 55% are poor. How many rich males are there in the class ?
(A) 200 (B) 150 (C) 300 (D) data inadequate

15. A jogger wants to save 1/4th of his jogging time. He should increase his speed by how much percentage.
(A) 25% (B) 36.95% (C) 33.33 % (D) 43.73% (BirlaSoft)

Digital Electronics Questions:
16.A VHDL component is a predefined logic function.

A. True

B. False

17.A circuit that responds to a specific set of signals to produce a related digital signal output is called a(n):

A. BCD matrix

B. display driver

C. encoder

D. decoder

18.A pull-down resistor must be used with open-collector TTL circuits.

A. True

B. False

19.
For a three-input AND gate, with the input waveforms as shown below, which output waveform is correct?

A. a

B. b

C. c

D. d

20.The MAX+PLUS II compiler will automatically program a macrocell to borrow up to ________ product terms from each of the 3 adjacent macrocells in the same LAB.

A. 4

B. 5

C. 6

D. 7

21.Hexadecimal 44 is ________ in decimal.

A. 6810

B. 7410

C. 7710

D. 9810

22.What is the difference between the 8031 and the 8051?

A. The 8031 has no interrupts.

B. The 8031 is ROM-less.

C. The 8051 is ROM-less.

D. The 8051 has 64 bytes more memory.

23.When using edge-triggered flip-flops, the data is entered into the flip-flop on the leading edge of the clock, but the output does not change until the trailing edge of the clock.

A. True

B. False

24.What logic function is the sum output of a half-adder?

A. AND

B. exclusive-OR

C. exclusive-NOR

D. NAND

25.Find the 2’s complement of –1101102.

A. 1101002

B. 1010102

C. 0010012

D. 0010102

26.Asynchronous inputs will cause the flip-flop to respond immediately with regard to the clock input.

A. True

B. False

27.How is the speed–power product of a logic family determined?

A. The propagation delay in s is multiplied by the power dissipation in mW.

B. The propagation delay in ms is multiplied by the power dissipation in W.

C. The propagation delay in ns is multiplied by the power dissipation in mW.

D. The propagation delay in ns is multiplied by the power dissipation in W.

28.An encoder in which the highest and lowest value input digits are encoded simultaneously is known as a priority encoder.

A. True

B. False

29.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

30.During a read operation the CPU fetches ________.

A. a program instruction

C. data itself

D. all of the above

31.In ASCII code, the hexadecimal sequence 53 54 55 44 45 4E 54 decodes to STUDENT.

A. True

B. False

32.The largest single BCD digit has a binary value of 15.

A. True

B. False

33.
How can a digital one-shot be implemented using HDL?

A. By using a resistor and a capacitor

B. By applying the concept of a counter

C. By using a library function

D. By applying a level trigger

34.One advantage that MOSFET transistors have over bipolar transistors is ________.

A. high input impedance

B. higher switching speed

C. low input impedance

D. reduced propagation delay

35.A logic signal experiences a delay in going through a circuit. The two propagation delay times are defined as:

A. tPLH and tPHL.

B. tDLH and tDHL.

C. tHPL and tlph.

D. tLDH and tHDL.

PHYSICAL DESIGN QUESTIONS
————————–

36. How do you qualify Floorplan
37. How to calculate net wire length of routed signals
38. What is Antenna violations
39. How to identify if NDR rule is wrongly assigned to other signals
40. What is Multi-VT cells
42. What is Derate?
43. What is CRPR
44. How to fix IR-drop
45. In which case hold depends on frequency
46. What is useful skew
47. What is un-clocked flops?
48. What is multicycle path
49. What is false path
50. What is disable path
51. What is there in .lib file
52. What is there in .lef file (or) .mw file?
53. What is there in .tf file
54. What is sdc file
55. How you will check the given Netlist is proper or not ?
56. What is Un-resolved reference?
57. What is UPF file
58. What is master clock
59. What is meant by generated clock
60. What is virtual clock
61. What is crosstalk
62. How you will fix the crosstalk?
63. When you are going to lower nodes, what complexity you will face ?
64. What is Multi-driven net
65. In placement stage, how will you fix the setup violations ?[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row]