BHEL Trainee Exam question papers

Any buddy, please provide me the BHEL Engineer Trainee Question Paper Answer…………

Here I am sharing the BHEL Engineer Trainee Question Paper Answer;

1. A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. of brand A are needed to make 40kgs. of the mixture?
Ans. Brand A needed is 24kgs.

2. A wizard named Nepo says “I am only three times my son’s age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old.” How old is Nepo?
Ans. 360 years old.

3. One dog tells the other that there are two dogs in front of me. The other one also shouts that he too had two behind him. How many are they?
Ans. Three.

4. A man ate 100 bananas in five days, each day eating 6 more than the previous day. How many bananas did he eat on the first day?
Ans. Eight.

5. If it takes five minutes to boil one egg, how long will it take to boil four eggs?
Ans. Five minutes.

6. Three containers A, B and C have volumes a, b, and c respectively; and container A is full of water while the other two are empty. If from container A water is poured into container B which becomes 1/3 full, and into container C which becomes 1/2 full, how much water is left in container A?

7. ABCE is an isosceles trapezoid and ACDE is a rectangle. AB = 10 and EC = 20. What is the length of AE?
Ans. AE = 10.

8. In the given figure, PA and PB are tangents to the circle at A and B respectively and the chord BC is parallel to tangent PA. If AC = 6 cm, and length of the tangent AP is 9 cm, then what is the length of the chord BC?
Ans. BC = 4 cm.

9 Three cards are drawn at random from an ordinary pack of cards. Find the probability that they will consist of a king, a queen and an ace.
Ans. 64/2210.

10. A number of cats got together and decided to kill between them 999919 mice. Every cat killed an equal number of mice. Each cat killed more mice than there were cats. How many cats do you think there were ?
Ans. 991.

11. If Log2 x – 5 Log x + 6 = 0, then what would the value / values of x be?
Ans. x = e2 or e3.

12. The square of a two digit number is divided by half the number. After 36 is added to the quotient, this sum is then divided by 2. The digits of the resulting number are the same as those in the original number, but they are in reverse order. The ten’s place of the original number is equal to twice the difference between its digits. What is the number?
Ans. 46

13.Can you tender a one rupee note in such a manner that there shall be total 50 coins but none of them would be 2 paise coins.?
Ans. 45 one paisa coins, 2 five paise coins, 2 ten paise coins, and 1 twenty-five paise coins.

14.A monkey starts climbing up a tree 20ft. tall. Each hour, it hops 3ft. and slips back 2ft. How much time would it take the monkey to reach the top?
Ans.18 hours.

15. What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12
Ans. 9

16. The minute hand of a clock overtakes the hour hand at intervals of 64 minutes of correct time. How much a day does the clock gain or lose?
Ans. 32 8/11 minutes.

17. Solve for x and y: 1/x – 1/y = 1/3, 1/x2 + 1/y2 = 5/9.
Ans. x = 3/2 or -3 and y = 3 or -3/2.

18. Daal is now being sold at Rs. 20 a kg. During last month its rate was Rs. 16 per kg. By how much percent should a family reduce its consumption so as to keep the expenditure fixed?
Ans. 20 %.

19. Find the least value of 3x + 4y if x2y3 = 6.
Ans. 10.

20. Can you find out what day of the week was January 12, 1979?
Ans. Friday.

21. A garrison of 3300 men has provisions for 32 days, when given at a rate of 850 grams per head. At the end of 7 days a reinforcement arrives and it was found that now the provisions will last 8 days less, when given at the rate of 825 grams per head. How, many more men can it feed?
Ans. 1700 men.

22. From 5 different green balls, four different blue balls and three different red balls, how many combinations of balls can be chosen taking at least one green and one blue ball?
Ans. 3720.

23. Three pipes, A, B, & C are attached to a tank. A & B can fill it in 20 & 30 minutes respectively while C can empty it in 15 minutes. If A, B & C are kept open successively for 1 minute each, how soon will the tank be filled?
Ans. 167 minutes.

24. A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time?
Ans. 3 hours 20 minutes.

25. Mr. Shah decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
Ans.46 steps.

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Answered By StudyChaCha Member

You need BHEL Supervisor Trainee Computer Science Exam Question Paper, I am giving here:

1. Which one of the following is provided by a data dictionary ?
(A) User data (B) Functional data
(C) Database structure data (D) Sorted data

2. Which one of the following is a direct benefit of databse normalization ?
(A) higher query processing efficiency (B) smaller number of tables
(C) reduced I/O for most queries (D) reduced data redundancy

3. What is the result of the following SQL statement ?
SELECT A.Employee_Name, B.Spouse_Name
FROM Employee A LEFT OUTER JOIN Spouse B
ON A. Employee_ID = B.Employee_ID
(A) A list of all employee’s names, including the name of their spouse if they have one
(B) A list of all employees that have spouses, with spouse names included in the list
(C) A list of employee’s spouses
(D) Two lists : One list of employees, the other of spouses.

4. The ability to modify the conceptual schema without causing any change to the application
program is known as :
(A) Physical data independence (B) Logical data independence
(C) External data independence (D) Static data

5. A field or a combination of fields that has a unique value is called :
(A) Secondary key (B) Foreign key
(C) Primary key (D) Alternate key

6. Relational operator that yields all values from all rows in a table is known as
(A) difference (B) product
(C) select (D) project

7. Referential integrity controls relationships between :
(A) attributes in a table (B) operations of an object
(C) instances of a class (D) tables in a database.

8. What will be suitable criteria that should be entered for a query to search for Employee
Names beginning with M ?
(A) Start with M (B) Like M
(C) Like ‘M?’ (D) Like ‘M*’

9. What rows will this select statement return ?
SELECT * FROM products WHERE ordernumber > = 1000
(A) All rows in the products table whose order number is greater than or equal to 1000
(B) All rows in the products table whose order number is less than or equal to 1000
(C) The first 1000 rows of the product table
(D) All rows in the products table whose order number is greater than 1000

10. A television broadcast is an example of ______transmission.
(A) Simplex (B) half-duplex
(C) full-duplex (D) automatic

11. ______ is the protocol suite for the Internet which we use presently :
(A) TCP/IP (B) NCP
(C) UNIX (D) ACM

12. _______ switching is well suited for voice communication while______ switching is better
suited for data and other non-voice communication.
(A) Message; circuit (B) Circuit; message
(C) Packet; circuit (D) Circuit; packet

13. Forty-five physical channels link________devices arranged in a mesh topology.
(A) NINE (9) (B) TEN (10)
(C) FORTY (40) (D) FORTY-FIVE (45)

14. The most frequently used UTP connector is _______ .
(A) category 5 connector (B) EIA 232
(C) RJ45 (D) JR45

15. The natural mask for class C IP address is _______ .
(A) 255.255.255.0 (B) 255.255.0.0
(C) 255.0.0.0 (D) 255.255.255.255

16. The Internet began as an experimental network called
(A) Intranet (B) ARPANET
(C) ARPA (D) DoDNET

17. Clock speed is measured in
(A) Bits per second (B) Baud
(C) Bytes (D) Hertz

18. Cache memory enhances
(A) Memory capacity (B) Memory access time
(C) Secondary storage capacity (D) Secondary storage access time

19. A user complains that he has created a shell script ‘myuse’ that will report his usage of
disk space by a directory in UNIX, but when he executes the script he only receives the
message : myuse : cannot execute. What is the probable cause of the error described
above ?
(A) The file ‘myuse’ contains syntax errors
(B) The file ‘myuse’ cannot be located because the user has not set his PATH properly
(C) The user does not have permission to read his directory
(D) The file mode for the owner of ‘myuse’ is not executable.

20. Three players A, B, C are in a race. A is twice as likely to win as B and B is twice as likely
to win as C. Then the probability that B wins =
(A) 1/2 (B) 2/3
(C) 1/3 (D) 2/7

21. In following Java code snippet, what will be the output of following :
int var 1 = 5, var 2 = 7;
System.out.println(“Result=” + var l * var 3);
(A) Result = 35 (B) Result = 57
(C) Result = 3 (D) Error

22. Consider the following segment of a Java program,
int num, alpha = 10;
num = 4;
switch (num)
{
case 3 : alpha++; break;
case 4 :
case 6 : alpha = alpha + 3;
case 8 : alpha = alpha + 4; break;
default : alpha = alpha + 5;
}
System.out.println (alpha);
What will the output be when the above segment is executed as a program ?
(A) 15 (B) 16
(C) 17 (D) 18

23. The region of memory sufficiently large to hold all pixels of the display is called a
(A) Frame buffer (B) RAM
(C) ROM (D) Cache Memory

24. Which of the following statements is correct regarding Bitmap images ?
(A) They are based on lines and curves
(B) They are best for real-world images like Photography and Painted pictures
(C) They have a small data size
(D) One does not need to compress the file for transferring.

25. ………… is a process model used to show the flow of data through a system and the
work or processing performed by the system :
(A) Document Flow Diagram
(B) Data Flow Diagram
(C) Entity Relationship Diagram
(D) Use Case Diagram.

26. Consider the following two relations :
A (Students) B
St_Id Name Address St_Id Name Address
1000000004 Ratan Mumbai 1000000001 Mahesh Gangtok
1000000001 Mahesh Gangtok 1000000002 Samir Indore
1000000008 Babita Delhi 1000000004 Ratan Mumbai
1000000002 Samir Indore 1000000008 Babita Delhi
Applying a certain SQL statement to relation A gives relation B. Which of the following statements
could this SQL statement be ?
(A) SELECT * FROM Students ORDER BY St_Id;
(B) SELECT * FROM Students ORDER BY Name;
(C) SELECT * FROM Students ORDER BY St_Id DESC;
(D) SELECT * FROM Students ORDER BY Name DESC;

27. Consider the code snippet given below :

& lt H1 & gt Hello BIT & lt H1 & gt

Which of the following is correct in relation to the above code snippet ?
(A) Hello BIT is displayed as the output with H1 font.
(B) Hello BIT ; is displayed as the output with H1 font.
(C) ; is displayed as the output with default font.
(D)
Hellow BIT is displayed as the output.

28. When you are creating a structure in C/C++, you need to use the keyword
(A) structure (B) object
(C) struct (D) record

29. 54__7 = 5. Which arithmetic operator can replace the blank to make the statement
correct ?
(A) – (B) /
(C) % (D) *
30. What is the output of the following code in C ?

for (int i = 0; i < 10; i++)
{cout << i% 2 << ” “;}
(A) 0 1 2 3 4 5 6 7 8 9 (B) 0 2 4 6 8 10 12 14 16 18
(C) 10101010101 (D) 10 10 10 10 10

31. In C++, if a catch statement is written to catch exception objects of a base class type, it
can also catch all ______ derived from that base class.
(A) Exceptions for objects (B) Objects of classes
(C) Arguments (D) Errors

32. The design of classes in a way that hides the details of implementation from the user is
known as :
(A) Encapsulation (B) Information Hiding
(C) Data Abstraction (D) Reusability

33. Can two classes contain member functions with the same name ?
(A) No.
(B) Yes, but only if the two classes have the same name
(C) Yes, but only if the main program does not declare both kinds
(D) Yes, this is always allowed.

34. What is printed when the following sample code of C is executed ?
char *ptr;
char my String = “abcdefghijklmnop”;
ptr = myString;
printf (“ptr=%s/n”, ptr+5);
printf (“ptr = %s”, ptr);
(A) ptr = fghijklmnop (B) ptr = fghijklmnop
ptr = fghijklmnop ptr = abcdefghijklmnop
(C) ptr = efghijklmnop (D) ptr = efghijklmnop
ptr = abcdefghijklmnop ptr = efghijklmnop

35. How many times will the “while” body be executed in the sampe code above ?
int ch = 10;
int ci = 15;
while (ch > ci)
{
cout << ch << endl ;
++ ci; — ch ;
(A) 0 (B) 1
(C) 2 (D) 3

36. What standard include file is needed to use the exit ( ) function ?
(A) None (B) Stdlib.h
(C) stdio.h (D) std.h

37. The processing speed of different computers is compared using :
(A) RPM (B) GHz
(C) MIPS (D) CPS

38. Who is associated with the development of ‘C’ language ?
(A) Niklaus Wirth
(B) Donald Knuth
(C) Dennis M Ritchie
(D) Charles Babbage.

39. Boolean expression for NAND gate with two inputs x and y can be written as :
(A) x – y (B) x + y
(C) x + y (D) xy + xy

40. Two’s complement of 1011.01 is :
(A) 0100.10 (B) 0100.11
(C) 1011.10 (D) 0100.01

41. A friend function can be used to :
(A) avoid arguments between classes
(B) allow access to classes whose source code is unavailable
(C) allow one class to access an unrelated class
(D) increases the versatility of an overload operator

42. In TCP, which layer is not present ?
(A) physical layer (B) data link layer
(C) transport layer (D) session layer

43. The digit F in Hexadecimal system is equivalent to ________ in decimal system.
(A) 16 (B) 15
(C) 17 (D) 8

44. The output of a______gate is only 1 when all of its inputs are 1 :
(A) NOR (B) XOR
(C) AND (D) NOT

45. 110012—100012 =
(A) 10000 (B) 01000
(C) 00100 (D) 00001

46. Which is correct :
(A) A.A=0 (B) A+1=A
(C) A+A=A’ (D) A’.A’ = 0

47. The basic storage element in a digital system is
(A) flip flop (B) counter
(C) multiplexer (D) encoder

48. AB + AB’ =
(A) A (B) B
(C) 1 (D) 0

49. In UNIX, which command is used to sort the lines of data in a file in reverse order
(A) sort (B) sh
(C) st (D) sort –r

50. The commonly used UNIX commands like date, ls, cat etc. are stored in
(A) /dev directory (B) /bin directory
(C) /tmp directory (D) /unix directory

1 C 2 D 3 A 4 B 5 C 6 X 7 D 8 X 9 A 10 A 11 A 12 D 13 B 14 C 15 A 16 B 17D 18 B19 D 20 D 21 X 22 C 23 A 24 B 25 B 26 A 27 X 28 C 29 C 30 X 31 A 32 A 33 D34 B 35 A 36 B 37 C 38 C 39 C 40 B 41 C 42 D 43 B 44 C 45 B 46 B 47
A 48 A 49 D 50 B

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