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ST Microelectronics India Placement Paper held on 29th August 2007 at Thapar University Patiala, Punjab.

At the recruitment test, there were 3 types of papers.
IT (For MCA students)
Embedded Software (For BE CS and ME/Mtech CS- computer science)
Hardware (For BE / B.tech ECE branches and ME / MTech ECE – electronics and communication)

All of these papers had different number of questions

Here are the details of the embedded software paper for B.tech / BE computer science engineering students. Test Paper had two parts:

1. 1 marks questions (10 questions of aptitude and 10 questions on OS, Microprocessor and DS)

2. 2 marks questions on C(15 questions)

Part 1: 1 marks questions were like…
(Aptitude was quite easy)

There is pipe with given radius, a small pipe of given radius. How many pipes of smaller radius will contain the same quantity of liquid kept by larger radius tube?

A ladder is standing against a wall of 25m height at a distance of 7 km from wall. Suddenly Ladder slips 4m down from top. How much will it move from the earlier 7m distance from the wall?

A person likes 225 not 224, like 900 not 800, from given vat will he like…1600,1500.. (Answer is simply any given square term (1600) see the pattern of his liking.

Three co-ordinates of triangle were given. We had to find type of triangle it is.

A square is cut from a circle and a circle is cut from that square. How much area is remaining.

In equilateral triangle a circle is drawn. In that circle one square is drawn. Find the ratio of area of equilateral triangle to square?

Question on simple average speed.

Question on angle between hands of a clock.

Next 10 questions were technical

1. Int *p;

P=(int *p)malloc(100);

Wat is sizeof(p),sizeof(*p)

2. A question on find the worst case complexity of Quick Sort( ans :O(n2) )

3. Piggy Backing is For ?(Acknowledgement)

4. In POP operation of Microprocessor how it process the instruction

Ans: it pops the instruction and decrements the stack pointer

Where does Global,Local and static variables of a program lie?
3 Questions on Hardware
1 Question on Boolean expression (a simple one)

2 marks questions

1 #define xyz abc*cd

#define abc 10

#define cd 10

Main()

{

Int k;

K=20-xyz;

K==?

}

Ans: -80

2. Static variables don’t change their value as they are stored in

a) stack b) data segment c) heap d) none
C language programs and programming questions for the placement paper.
3. #pragma pack(1)

Struct a

{

Int a:4;

Int b:45;

Char c;

}

What is the size of struct if int is of four bytes .

Ans is 5

4. a question on bitwise operator

5.int i=90;

Char *p;

P=(char *)&i ;

P++;

Pointer is I ncremented by 2,1,4 or none of these

6.#define scanf “%s is string”

Main()

{

Printf(scanf,scanf);

Ans; %s is string is string

7 char str={“amit”);

printf(“hello \n” %s” \n”,str);

output : ?

8 One question on page table. Find page size

9 . One question on memory access time of a program with given hit ratio and given cache access time. (revise the formula from OS)

10. Find the number of 1’s in the following expression

(3*4096 + 16*1024+ 3)

11. 1 question on recursion

int i=89;

Int *p;

Char *t;

P=&I;

T=(char *)&I;

If( *p==*t)

Printf(“yes”);

Else

Printf(“no”);

Tell the output

12. Again two questions to find output of a C language program. You must have good knowledge of the C language. For that see the C and C++ sample placement paper technical / tech questions. C and C++ is also essential for the technical interview of ST microelectronics India.

Note: See the ST Microelectronics India company profile and other sample placement papers with real candidate experiences from previous and latest employment test papers for freshers and experienced candidates.

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