The Bharat Sanchar Nigam Limited (BSNL) is an authorized telecommunications company working under the Government of India.

The headquarters of BSNL is located in Delhi

BSNL conducts the recruitment for the post of TTA (Telecom Technical Assistant).

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.


Please find the below attached file for the BSNL TTA Placement Papers:



Exam pattern:

The TTA examination shall have a single paper. This paper will have a time period of 3 hours. The total marks that are carried by this paper are 200.

The test is classified into 3 parts. The divisions are:

General Ability Test – This part shall have 20 questions
Basic Engineering – This part shall have 90 questions
Specialization – This part shall have 90 questions

Books for BSNL TTA Exam preparation:

Guide to T.T.A (Telecom Training Assistant)
Author: Gkp

Gateway To TTA
Author: Ashish Dixit & Mayank Srivastava

Telecom Technical Asstt (TTA) Guide
Author: Rph Editorial Board

Practice Papers Bharat Sanchar Nigam Ltd Telecom Technical Assitants (TTA) Recruitment Exam
Author: G K P

Attached Files

BSNL TTA Placement Paper.doc (37.5 KB, 45 views)