[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_column_text]Aptitude Questions:

1. A number, when 35 is subtracted from it, reduces to its 80 percent. What is four-fifth of that number?

(A) 70 (B) 90 (C) 120 (D) 140

2. If the radius of a circle is increased by 20% then the area is increased by:

(A) 44 % (B) 144 % (C) 120 (D) 40 %

3. In a class of 50 students, the score of 30% of students is above Shahrukh. What percent of students have score below Shahrukh?

(A) 70% (B) 68% (C) 66%s (D) None of these

4. A, B and C shared profits in ratio of 5:7:8. They partnered for 14 months, 8 months and 7 months respectively. What was the ratio of their investments?

(A) 21:49:56 (B) 20:49:56 (C) 20:49:64 (D) 24:49:64

5. In a partnership, A invests 1/6 of the capital for 1/6 of the time, B invests 1/3 of the capital for 1/3 of the time and C, the rest of the capital for the whole time. Out of a profit of Rs. 4600, B’s share

is:

(A) Rs. 650 (B) Rs. 800 (C) Rs. 960 (D) Rs. 100

6. A sum of money doubles itself in 12 years. Find the rate percentage per annum if interest is calculated at simple interest.

(a) 12.5% (b) 8.33% (c) 10% (d) 7.51%

7. A certain sum of money trebles itself in 8 years. In how many years it will be five times?

(a) 22 years (b) 16 years (c) 20 years (d) 24 years

8. The Value of a machine depreciates 10% annually. If the present value of the machine is Rs 1, 00, 000/- then the total depreciation during 2 years hence will be?

(a) Rs 81, 000 (b) 21, 000 (c) Rs 19, 000 (d) Rs 72, 000

9. A certain sum amounts to Rs 1, 452 in 2 years and to Rs 1, 597.20 in 3 years at compound interest, then rate percent is?

(a) 10 (b) 11 (c) 13 (d) 9

10. If the simple interest is 10.5 % annual and compound interest is 10% annual, find the difference between the interests after 3 years on a sum of 1000?

(a) 15 (b) 12 (c) 16 (d) 11

11. Anuj started a business by investing Rs.20, 000. Six months later, Pankaj joined him with a capital of Rs.15,000. After another three months Puneet joined the team by investing Rs.50, 0000. Find the ratio in which the profit at the end of two years should be divided by the three.

(A) 8:3:5 (B) 3:2:1 (C) 16:9:25 (D) 4:2:1

12. If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself?

(A) 6 (B) 8 (C) 10 (D) 12

13. The average cost of 4 apples and 7 bananas is Rs.16, The average cost of 7 apples and 4 bananas is Rs.24. The cost of 1 apple and 1 banana is Rs.

(A) 11 (B) 40 (C) 30 (D) 8

14. The average temperature of the first three days is 27?C and that of the next three days is 29?C. If the average of the whole week is 28.5?C, the temperature of the last day of the week is :

(A) 10.5?C (B) 21?C (C) 31.5?C (D) 42?C

3. 15. One quality of wheat costing Rs.9.30 per kg is mixed with another quality of wheat costing Rs. 10.80 per kg, then what will be the ratio in which they must be mixed so that the net cost is Rs. 10 per kg?

(A) 5:7 (B) 8:7 (C) 13:19 (D) None of these

Digital Electronics Questions:

16.The GAL16V8 has:

A. 16 dedicated inputs.

B. 8 special function pins.

C. 8 pins that are used as inputs or outputs.

D. All of the above

17.A 0.01- F capacitor is recommended by TTL manufacturers for ________ the power supply.

A. decoupling

B. filtering

C. rectifying

D. grounding

18.The noise margin for TTL is 0.8 V.

A. True

B. False

19.Which of the following is an invalid BCD code?

A. 0011

B. 1101

C. 0101

D. 1001

20.Convert the following BCD number to decimal.

100000000011bcd

A. 8003

B. 803

C. 1003

D. 103

21.The bistable multivibrator is an R-C flip-flop.

A. True

B. False

22.An input to the mode pin of an arithmetic/logic unit (ALU) determines if the function will be:

A. one’s-complemented

B. arithmetic or logic

C. positive or negative

D. with or without carry

23.What type of register would have a complete binary number shifted in one bit at a time and have all the stored bits shifted out one at a time?

A. parallel-in, parallel-out

B. parallel-in, serial-out

C. serial-in, parallel-out

D. serial-in, serial-out

24.A gate that could be used to compare two logic levels and provide a HIGH output if they are equal is a(n) ________.

A. XOR gate

B. XNOR gate

C. NAND gate

D. NOR gate

25.Which is not part of the execution unit (EU)?

A. Arithmetic logic unit (ALU)

B. Clock

C. General registers

D. Flags

26.The process by which a computer acquires digitized analog data is referred to as ________.

A. data acquisition

B. monotonicity

C. analog resolution

D. systematic digital conversion

27.An analog-to-digital converter has a four-bit output. How many analog values can it represent?

A. 4

B. 1/4

C. 16

D. 0.0625

28.Which of the following is an invalid output state for an 8421 BCD counter?

A. 1110

B. 0000

C. 0010

D. 0001

29.The octal number system consists of eight digits, 0 through 7.

A. True

B. False

30.The AD7524, a CMOS IC available from several IC manufacturers, is an eight-bit D/A converter that uses a(n) ________.

A. sample-and-hold circuit

B. R/2R ladder network

C. multiplexer

D. 10 s clock

31.An RC circuit used in a 74122 retriggerable one-shot has an REXT of 100 k and a CEXT of 0.005 F. The pulse width is ________.

A. 70 s

B. 16 s

C. 160 s

D. 32 s

32.A DAC changes ________.

A. an analog signal into digital data

B. digital data into an analog signal

C. digital data into an amplified signal

D. none of the above

33.In BCD addition, the value ________ is added to any invalid code group.

A. 010101

B. 0U812

C. 100110

D. 0110

34.A DRAM has a RAS and a CAS because ________.

A. the address lines are multiplexed to reduce pin count

B. the RAS determines the operation mode and the CAS enables the tristate outputs

C. the RAS latches in the address and the CAS latches in data

D. None of the above

35.A burst refresh and a normal memory operation of a DRAM can be interspersed.

A. True

B. False

PHYSICAL DESIGN QUESTIONS

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36. With respect to block-level fp arrange the following in right order.

{Place macros, creat die & core area, Place ports/pins, create p/g grid }.

37. On which factors cell delay depends?

38. What are the different types delays on which we focus mainly during STA?

39. What is virtual clock? How we can say any clock is virtual/ generated/ mastered by looking into sdc. File?

40. How prime time will report if you a

• Set-false path

• Set-disable time

To you design.

41. Explain mmmc. Which parasitic interconnect corners are checked for setup and hold?

42. Draw the waveform for following

• Create_clock –period 1.2 –wavefor{0.30.4 0.81.0} JTAG Clk

43. Explain OCV, Derate and CRPR.

44. Considering interconnect parasitics are not considered here find path delay b/w IN & OUT.

Slew at IN = 10ps

Load at OUT (Ci) = 2PF

I/P pin capacitance (I1 & I2) = 1 PF

Delay Table

Slew at A Load at Y

1PF 2PF

10ps 40ps 50ps

20ps 50ps 60ps

45. How synthesized netlist i.e. (.v) is in i/p stage of Floorplan is different from RTL netlist?

46. What is clock latency?Explain source & n/w delay.

47. What is difference b/w a Halo & a Blockage?

48. What is setup & hold timing? Derive equation to find setup & hold slack.

49. What are timing exceptions? Why they should be given as constraints?

50. Explain PD flow, i/p & o/p files in each stage.

51. What is uncertainty? Explain inter clock uncertainty.

52. Can there be setup & hold violation for same path? Justify your answer.

53. What is scan chain reordering?

54. Explain following terms and ways to fix them:-

• Congestion

• Electro migration

• Crosstalk

• CMOS Latch-up

55. What is crosstalk delay and Crosstalk noise?

56. Explain various kind of preplaced cells.

57. What is NDR? Which stage of PD we apply NDR and why?

58. What are the main goals of CTS?

59. Write Linux commands to perform following operations.

• Make a directory ZIYA

• Make files x1, x2, and x3.

• Make a text file x4 and write “I love my India”.

• Make a file with given permission to read& write to all but no one should have execute permissions.

60. Write a command to find “Ziya is a good teacher” in a file named XYZ.

61. Create a hidden file & write your favourite actor name.

62. Write a command to find how many times error occurred in your report.[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row]

Teacher is an important part of anybody's education.

I completed my post graduation in 2005. During my school and College, I always had difficulty coping up with things in classroom. But my Telugu teacher Mr. Hussain Budde during my 7th class , I used to enjoy his way of teaching, way he used to engage students by teaching lessons as stories. After that, I never found any teacher who kept sessions so much engaging. I don't want to blame my teachers, I always felt they could make sessions more engaging. I always had to spend time outside class hours to cope up with every minute of classroom session.

I as a teacher, I adopt a style of teaching which keeps session engaging and ensures that students give 100% focus on the session. I always wanted to be that one teacher, whom my students will remember for lifetime. I am making sure that, rest of trainer's also follow same.

I want your 6 months of education at VLSIGuru to be among your best learning experiences. We at VLSIGuru will do our best to make this a memorable time.