Hey!! As per your demand here I am providing you sample/ Practice paper of Basic Engineering BSNL TTA Exam Online paper


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


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 resistance?

(a) 4 A

(b) 0.4 A

(c) 10 A

(d) 1 A