BSNL TTA: Sample Question Paper (Basic Engineering)

As posted earlier BSNL is Recruiting TTAs (Telecom Technical Assistants) in many states. Here is a sample Question Paper for the TTA Exam to be conducted by BSNL. It has been made according to the Syllabus.

Sample Question Paper - BSNL TTA Exam

Paper - II (Basic Engineering) BSNL TTA Exam

1. X2 - 4X - 2Y + Y2 = 4 represents a circle with

(a) radius = 3

(b) radius = 4

(c) radius = 2

(d) radius = 5

2. Which of these represent two parallel lines:

(a) Y - 4X - 4 = 0

(b) Y + AX - 4 = 0

(c) Y - 4X - 1 =0

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) None of these.

3. The conjugate of complex numbers 3 + 2j is

(a) 3 - 2j

(b) 2 + 3j

(c) 2 - 3j

(d) 3 + 4j

4. A Square matrix each of whose diagonal element is 1 and each of the non-diagonal element is zero is called

(a) Null matrix

(b) Unit matrix

(c) Diagonal matrix

(d) Orthogonal matrix

5. The determinant of matrix <image> is

(a) 1

(b) 9

(c) 15

(d) 21

6. The charge of an electron is equal to

(a) 1.6 x 10-16 C

(b) -1.6 x 10-16 C

(c) 1.6 x 1019 C

(d) -1.6 x 1019 C

7. The potential energy of a charged conductor is

(a) 1/2 CV2

(b) 1/2 QV

(c) Both (a) and (b)

(d) None of these

8. Capacitors are mainly used in

(a) Electrical instruments

(b) Storage of electrical energy

(c) Overcoming voltage fluctuations

(d) All the above

9. Two capacities of 4 µF and 12 µF are joined in parallel. The total capacitance is

(a) 8 µF

(b) 16 µF

(c) 3 µF

(f) 2 µF

10. What is the total resistance between points 'A' and 'B' in the given circuit

<image>

(a) 12/7 O

(b) 15 O

(c) 7 O

(d) 7/12 O

11. A current of 12 A is passing through a pure resistive circuit when the potential difference of 60 volts is applied across it, if the potential difference applied is reduced to 12 V, the current would be

(a) 12/5 A

(b) 60 A

(c) 12 A

(d) 2 A

12. Which of these normally used household electrical bulbs will be having maximum resistance.

(a) 100 Watt bulb

(b) 50 Watt bulb

(c) 200 Watt bulb

(d) 25 Watt bulb

13.The distance of point P (4, 3) from the origin will be

(a) 7

(b) 1

(c) 5

(d) 9

14. The slope of the line passing from points (7, 3) and (5, 1) is

(a) 1

(b) 2

(c) 3

(d) 4

15. A line perpendicular to line 3x + 4y + 5 = 0 can be

(a) 4x + 3y + 4 = 0

(b) 4x - 3y + 3 = 0

(c) 3x - 4y + 5 = 0

(d) 3x - 4y + 2 = 0.

16. The centre of the circle x2 + 6x - 4y + y2 + 12 = 0 will be at

(a) (-3, 2)

(b) (3, -2)

(c) (-2, 3)

(d) (2, -3)

17. The product of (3 + 4j) and its conjugate is

(a) 7

(b) 25

(c) 12

(d) 21

18. During charging of a lead acid cell, the specific gravity of electrolyte will

(a) Increase

(b) Decrease

(c) Remain constant

(d) Increase then Decrease

19. The decimal number '12' is represented in binary system as

(a) 1100

(b) 0110

(c) 1010

(d) 1110

20. What is the value of current that will flow when a p. d. 200 V is applied across a circuit of 50 O resistance?

(a) 4 A

(b) 0.4 A

(c) 10 A

(d) 1 A

21. If both the inputs to a Nand Gate are '1', the output would be

(a) 1

(b) 0

22. If input 'A' is 1 and input 'B' is 0, then output X will be

<image>

(a) 0

(b) 1

23. The truth-table of a Nand Gate is

(a)

A B X
0 0 1
0 1 1
1 0 1
1 1 0

(b)

A B X
0 0 0
0 1 0
1 0 0
1 1 1

(c)

A B X
0 0 0
0 1 1
1 0 0
1 1 1

(d) None of these

24. IC chip is usually made of

(a) Lead

(b) Silicon

(c) Chromium.

(d) None of these.

25. Below given network is connected to a 16 V battery with internal resistance of 1 O. What will be current drawn from the battery?

<image>

(a) 2 A

(b) 3 A

(c) 12/7 A

(d) 7/12 A

26.Determine the equivalent resistance of the following network:

<image>

(a) 6 O

(b) 12 O

(c) 3 O

(d) 9 O.

27. A Zener diode is

(a) Forward biased heavily doped silicon p-n junction

(b) Reversed biased heavily doped silicon p-n junction

(c) Forward biased diode operating at breakdown point

(d) Is used as rectifying device

28. Crystal oscillator is used when frequency required is

(a) High

(b) Low

(c) Constant

(d) Varying.

29. What is the energy in a quantum of radiation having a wave length of 5000 A?

(a) 3.98 x 10-19 J

(b) 3.98 x 10-9 J

(c) 2.9 x 10-19 J

(d) 7.9 x 10-19 J.

30. Which of these cannot store energy?

(a) Capacitor

(b) Inductor

(c) Resistance

(d) LC circuit.

31. A short bar of magnet placed with its axis at 300 with a uniform external magnetic field of 0.16 T experiences a torque of magnitude 0.032 J. What is the magnetic moment of the magnet?

(a) 0.40 JT-1

(b) 4.0 JT-1

(c) 0.04 JT-1

(d) 0.2 JT-1

32. The total force on a charge 'q' with velocity "V" in an electric field 'E' and magnetic field 'B' will be

(a) q (E + V x B)

(b) q(E + V.B)

(c) qE + VxB

(d) q(B + V x E)

33. The magnetic field B at the centre of a circular current loop of radius 'a' is given by

(a) B =µ0 I/2a

(b) B = µ0 I/a

(c) B = 2µ0 I/a

(d)B = µ0 a/2I

34. If f = x2 + 4xy + y2 + 9, then which of the following is not true:

(a) ?f/?x = 2x + 4y

(b) ?f/?y = 4x + 2y

(c) ?2f/?x2 = 2

(d) ?2f/?x?y = 4

35. A hollow metal ball 8 cm in diameter is given a charge of - 4 x 10-8 C. The potential on the surface of the ball is

(a) - 9000 V

(b) - 900 V

(c) - 90 V

(d) Zero.

36. The effective capacitance between X and Y is

<image>

(a) 8/3 µF

(b) 7/6 µF

(c) 5/6 µF

(d) 2 µF.

37. The amount of work done is joules in carrying a charge + Q alongwith path ABCD and back to A between two oppositely charged plates is:

<image>

(a) Q

(b) 4Q

(c)Q/2

(d) Zero.

38. How many electrons are contained in 1C?

(a) 6.25 x 1018

(b) 6.25 x 1019

(c) 6.25 x 1020

(d) 6.25 x 1021

39. The phase angle between voltage and current in an a. c. circuit through a pure capacitance is

(a) 180°

(b) 90°

(c) 60°

(d) 0°

40. The permeability of a material is 0.998. It is:

(a) Diamagnetic

(b) Paramagnetic

(c) Ferromagnetic

(d) Anti ferromagnetic.

41. The ratio of the specific charge of an electron to that of a positron is

(a) 1:1

(b) 1:2

(c) 2:1

(d) 4:1.

42. With increase in temperature, the electrical conductivity of intrinsic semiconductor

(a) Increases

(b) Decreases

(c) First increases then decreases

(d) First decreases then increases.

43. In a common collector circuit, input resistance is:

(a) Very high

(b) Very low

(c) Zero

(d) Moderate.

44. A electron jumps from the 4th orbit to the 2nd orbit of hydrogen atom. If R = 107/m, the frequency of emitted radiations will be

(a) 3/16 x 105 Hz

(b) 3/16 x 1015 Hz

(c) 9/16 x 1015 Hz

(d) 3/4 x 1015 Hz.

45. I amu. equals

(a) 1.67 x 10-27 g

(b) 1.67 x 10-28 g

(c) 1.67 x 10-29 g

(d) 1.67 x 10-27 kg

46. A tuning fork produces 4 beats/sec both with 50 and 40 cms of a stretched wire of a sonometer. The frequency of the tuning fork is

(a) 36 Hz

(b) 50 Hz

(c) 90Hz

(d) 110 Hz

47. A particle is executing SHM with an amplitude 4 cm. At what displacement its energy is half kinetic and half potential

(a) 2v2cm

(b) v2 cm

(c) 2 cm

(d) 1 cm.

48. An electron moves with a constant velocity V parallel to the direction of uniform magnetic field 'B'. The force experienced by the electron is

(a) BeV

(b) eV/B

(c)B/eV

(d) Zero.

49.A charged particle is moving along the axis of X. If an electric field is applied along the axis of Y, the motion of the particle in Y-Y plane will be

(a) Elliptical

(b) Parabolic

(c) Circular

(d) Linear

50. An electric or magnetic field cannot accelerate

(a) Electrons

(b) Protons

(c) Neutrons

(d) Alpha particles

20 Comments

  1. I Need BSNL TTA Sample papers please send me the sample papers

    Reply
  2. tta exam papers

    Reply
  3. I need bsnl gujarat tta sample paper on my mail,

    Reply
  4. hi guys,
    i need BSNL PUNJAB TTA sample model paper please send me

    Reply
  5. hi friends plz send me tips how to prepares for corporation bank PO post.iam an electronic student, so will they ask anything related to tat.If so plz guide me how to prepare.

    Reply
  6. can u help me with BSNL TTA sample model papers

    Reply
  7. i want a model questions with answer

    Reply
  8. Can anyone send me such more sample papers along with their keys. I also need sample question papers of the written test conducted by ISRO for scientist/Engineers - SC (Electronics & Telecommunication. Please help me with this.
    Thank you.....

    Reply
  9. Please send me the sample paper for Technical Assistant or Assistant Engineer - Computer Science for Punjab and Centre government jobs

    Reply
  10. Please send me the computer part of the tta exam for J&k circle

    Reply
  11. hai,
    can u help me with sample question papers of (BSNL-TTA)

    Reply
  12. Please send me sample paper of TTA exams especially for Computer part

    Reply
  13. THANKS ......GJTUTORIAL IT HELPS ME LOT.............IF ANY BODY HAS MORE MODEL PAPERS ABOUT BSNL TTA EXAM THEN PLEASE UPLOAD HERE....I BELONGS FROM COMPUTER SCIENCE STREAM.......

    Reply
  14. i want many bsnl tta model questions paper with answer.

    Reply
  15. SEND ME PREVIOUS YEARS QUESTION PAPER OF TTA OF CACUTTA TELEPHONE FOR ELECTRICAL ENGINEERING TRADE

    Reply
  16. PLEASE SEND ME PREVIOUS YEARS QUESTION PAPER OF TTA OF CACUTTA TELEPHONE FOR ELECTRICAL ENGINEERING TRADE

    Reply
  17. I want 2 find samle test papers of BSNL TTA Exam plz infrm me if u find 1

    Reply
  18. I want 2 find samle test papers of BSNL TTA Exam plz infrm me if u find 1...........

    Reply
  19. I Need BSNL PUNJAB TTA Sample papers please send me the sample papers

    Reply
  20. hai guys,
    can u help me with sample model papers(BSNL TTA)...

    Reply

Leave a Reply

Share This

Share this post with your friends!