Bently –Nevada India pvt. Ltd. Held on 3^rd july 2004 

1. Given matrix A and I(identity matrix). Find matrix B where AB=I.

2. y=log(sinx), find dy/dx.

3. B is 8 Km  East to  A, C is 6 Km north to B, D is 16 Km east to C and E is 12 Km north of D, Find distance between A and E.

4. A train is moving with the velocity of x Km per hr. it crosses a station of length y Km in

5. z meter per second. Find the length of the train.( here x, y and z are given) 

6. The ratio of length of a rod and its shadow is 1/sqrt(3). Find the angle of elevation.

7. Find LCM 120 and 60.

8. 4(144)8, 3(x)7 find x.

    9.  limit x->₯ [(x+6)/(x-1)]^{[(x+6)/(x-1)]}

  >>>> There are 20 such questions. Questions are very easy.

 Section-2 consists of some questions from microprocessor, digital electronics, one question on turing machine(the question was very long) and some questions on C(some what tricky-but solvable if  enough time is left)

 Some questions which I remember are-

1. Find sqrt of 113 upto 3 decimal places.

2. 20 bit address bus can address how much memory

3. find 2’s complement of 111001001

4. Conver 100011 in decimal

5. (120)₁₀  to (x)₇

6. To represent A to Z and 0 to 9 how many bits are required. Assuming all the characters requires equal bits.

7. 2¹⁰ =……Kilo byte

8. A op B = XXXX00XXXXXX0XXX

Find B and op, where op is a logical operator and X=don’t care

9. To add 16 bits numbers how many full adders and half adders are required.

10. A full adder has how many input lines.

12. #define count(x) sizeof(x)/sizeof(x[0])

what count(x) does?

13. X=24, Y=16

X^=Y

Y^=X

X^=X

Y^=X

Find value of X and Y( the exact question may be some what different)

14. #define inum 53268

 While(……….)

{ 

inum=inum &(inum-1);

.

.

.

.

} 

15. Write a program which will accept only ‘0’ to ‘9’, ‘+’, ‘-’, ‘#’ characters as inputs.

16. In a circuit of gates all gates are controlled by a single ……………

17. How many inputs are there in a NOT gate