BSNL TTA Last Year Question Papers

Can you give me question paper for BSNL Telecom Technical Assistants (TTA) examination in a PDF file Format ?

[Quick Sam]

Here I am giving you question paper for BSNL Telecom Technical Assistants (TTA) examination ....................

1. The probability of hitting a target from one gun 9/10, from another gun is 7/10. If both gun are fired at the same time, the probability of hitting the target is

(A) 2/20 (B) 63/100
(C) 16/20 (D) 63/20

2. If the three vectors a, b and c are coplanar , then the missed product a x b. c is

(A) Zero (B) Non-Zero
(C) Unity (D) Non of these

3. Limit sin x/x is x?0

(A) not defined (B) 1
(c) zero (D) -1

4. When a body hits an obstacle, the force with which it hits the obstacle depends upon its

(A) average velocity
(B) velocity at the instant of collision
(C) initial velocity
(D) all of these

5. The wavelength of visible light is of the order of

(A) 1µm (B) 100 µm
(C) 1mm (D) 1 Å

6. Whenever a source of sound moves towards an observer

(A) the frequency heard by the observer is less than that of the source
(B) the frequency heard by the observer is greater than that of the source
(C) the frequency heard by the observer is unchanged
(D) the wavelength of sound heard is greater than that of the sound emitted

7. Moving electric charges will interact with

(A) electric field only
(B) magnetic field only
(C) both of these
(D) none of these

8. Gamma radiation is most similar to

(A) sound waves (B) X-ray
(C) Alpha particles (D) neutrons

9. The fundamental particle responsible for keeping the nucleus together is

(A) meson (B) anti proton
(C) positron (D) muon

10. Air contains 21% oxygen by volume and the rest nitrogen. If the barometer pressure is 740 mm of Hg the partial pressure of oxygen is close to

(A) 155 mm of Hg
(B) 310 mm of Hg
(C) 465 mm of Hg
(D) 162 mm of Hg

11. In the electrolytic cell

(A) electrical energy is converted into chemical energy
(B) chemical energy is converted into electrical energy
(C) mechanical energy is converted into potential energy
(D) potential energy is converted into kinetic energy

12. The force required to maintain a body at constant speed in free space is equal to

(A) the mass of the body
(B) zero
(C) the weight of the body
(D) the force required to stop it

13. If the length of a spring is halved, the spring constant becomes

(A) half (B) 1/4th
(C) double (D) four times

14. The coefficient of static friction depends on

(A) the material of the bodies in contact
(B) the quality of surface finish of the bodies
(C) the presence of foreign matter between the surface
(D) all of these

15. The units of angular impulse in SI system are

(A) Nms (B) Ns
(C) Nm/s (D) Ns/m

16. Stainless steel contains iron and

(A) Chromium and nickel
(B) Chromium and carbon
(C) Nickel and carbon
(D) Chromium and manganese

17. The property of material by which it offers resistance to scratching or indentation is called

(A) Brittleness
(B) Hardness
(C) Toughness
(D) Resilience

18. The failure of a material due to repeated stressing is known as

(A) Creep
(B) Fracture
(C) Fatigue
(D) Brittle Fracture

19. The electric device which blocks DC but allows AC is called

(A) Capacitor
(B) Inductor
(C) Amplifier
(D) Transducer

20. When a charge is moved from one point to another in an electric field, the work done is

(A) independent of the path
(B) zero along the direction of the field
(C) measured in Joules per metre
(D) measure in Volt per metre

21. A capacitor with lowest leakage is

(A) Paper (B) Ceramic
(C) Polyester (D) Mica

22. A zener diode operates

(A) In an extremely high forward bias
(B) In an extremely low reverse bias
(C) In an extremely low forward bias
(D) In a reverse bias higher than laid down voltage

23. The specific gravity of a lead acid cell is often used as a measure of its

(A) Rate of discharge
(B) Operating temperature
(C) State of charge
(D) Life expectancy

24. An uniformly distributed load is one which

(A) Acts at a point on a beam
(B) Spreads uniformly over the whole length of a beam
(C) Varies uniformly over the whole length of a beam
(D) loads the beam from one end only

25. A steam engine device which keeps the speed of the engine, all loads, constant is known as

(A) Flywheel
(B) Eccentric
(C) Connecting rod
(D) Governor

26. The refrigerant hiving the lowest freezing point is

(A) Ammonia
(B) Carbon dioxide
(C) Freon – 11
(D) Freon – 22
BSNL TTA Question Papers
1. If the following numbers are rewritten by interchanging the digits in ten’s place and hundred’s place and then arranging them in the descending order. What will be the second digit of the newly formed fifth number from your right ?
479, 736, 895, 978, 389, 675
(A) 3
(B) 4
(C) 5
(D) 6
Ans : (C)

2. P is 60 m South-East of Q. R is 60 m North-East of Q. Then R is in which direction of P ?
(A) North
(B) North-East
(C) South
(D) South-East
Ans : (A)

Directions—(Q. 3–5) Read the following information for answering the questions that follow—
On a playing ground A, B, C, D and E are standing as described below facing the North.
(i) B is 50 metres to the right of D.
(ii) A is 60 metres to the South of B
(iii) C is 40 metres to the West of D.
(iv) E is 80 metres to the North of A.

3. If a boy walks from C, meets D followed by B, A and then E, how many metres has he walked if he has travelled the straight distance all through ?
(A) 120
(B) 150
(C) 170
(D) 230
Ans : (D)

4. What is the minimum distance (in metre approximately) between C and E ?
(A) 53
(B) 78
(C) 92
(D) 120
Ans : (C)

5. Who is to the South-East of the person who is to the left of D ?
(A) A
(B) B
(C) C
(D) E
Ans : (A)

6. A man was walking in the evening just before the sun set. His wife said that, his shadow fell on his right. If the wife was walking in the opposite direction of the man, then which direction the wife was facing ?
(A) North
(B) West
(C) South
(D) East
Ans : (C)

Directions—(Q. 7–11) In each of the following questions choose the set of numbers from the four alternative sets that is similar to the given set.

7. Given set : (4, 9, 18)
(A) (8, 14, 22)
(B) (10, 15, 25)
(C) (6, 12, 23)
(D) (12, 17, 26)
Ans : (D)

8. Given set : (10, 14, 17)
(A) (4, 11, 14)
(B) (9, 12, 15)
(C) (8, 13, 18)
(D) (6, 9, 12)
Ans : (A)

9. Given set : (7, 27, 55)
(A) (21, 35, 52)
(B) (18, 42, 65)
(C) (16, 40, 72)
(D) (13, 30, 58)
Ans : (C)

10. Given set : (39, 28, 19)
(A) (84, 67, 52)
(B) (52, 25, 17)
(C) (70, 49, 36)
(D) (65, 45, 21)
Ans : (A)

11. Given set : (246, 257, 358)
(A) (233, 343, 345)
(B) (273, 365, 367)
(C) (143, 226, 237)
(D) (145, 235, 325)
Ans : (A)

2. (A) January
(B) February
(C) July
(D) December
Ans. (B)

13. (A) Bible
(B) Panchsheel
(C) Geeta
(D) Quran
Ans. (B)

14. (A) Star
(B) Sun
(C) Sky
(D) Moon
Ans. (C)

Directions—(Q. 15 to 17): based on alphabets.
15. If the sequence of the alphabets is reversed which of the following would be the 14th letter from your left?
(A) N
(B) L
(C) O
(D) None of these
Ans. (D)

16. Which letter is the 8th letter to the right of the letter, which is 12th from the left?
(A) V
(B) T
(C) W
(D) Y
Ans. (B)
17. Which letter is the 8th letter to the right of the letter which is 10th to the left of the last but one letter from the right?
(A) V
(B) X
(C) W
(D) I
Ans. (C)

Directions—(Q. 18 to 23) Three of the following four are alike in a certain way and so form a group. Which is the one that does not belong to that group?
18. (A) Green
(B) Red
(C) Colour
(D) Orange
Ans. (C)

19. (A) Rabbit
(B) Crocodile
(C) Earthworm
(D) Snail
Ans. (A)

20. (A) Polo
(B) Chess
(C) Ludo
(D) Carrom
Ans. (A)

21. (A) Sun
(B) Universe
(C) Moon
(D) Star
Ans. (B)

22.35%of ?=242
(A)729
(B)652
(C)693
(D)759
(E) None of these

23. 1256+4813+765=?
(A)5642
(B) 5876
(C)6788
(D) 6878
(E) None of these

24. 22 x4+(?)2=(13)2

(A) 81
(C) 27
(B) 9
(D) 64
(E) None of these

25. 432+2170+35=?
(A)494
(B) 475
(C)481
(D) 469
(E) None of these

26. Three numbers are in the ratio of 3: 4 :5 respectively. If the sum of the first and third numbers is more than the second number by 52, then which will be the largest number?
(A) 65
(B) 52
(C) 79
(D) 63
(E) None of these

27. The compound interest on a certain amount for 2 years at the rate of 8 p.c.p.a. is Rs.312. What will be the simple interest on the same amount and at the same rate and same time?
(A)Rs. 349.92
(B) Rs. 300
(C)Rs. 358.92
(D) Rs. 400
(E) None of these

28. The length of a rectangle exceeds its breadth by 7 ems. If the length is decreased by 4 cm. and the breadth is increased by 3 cms., then the area of the new rectangle will be the same as the area of the original rectangle. What will be the perimeter of the original rectangle?
(A)45 cms.
(B)40 cems.
(C)50 cms.
(D)55 cms.
(E)None of these

29. The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number?
(A)28
(B) 48
(C)39
(D) 93
(E) None of these

30. In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction ?
(A)5/18
(B)6/13
(C)13/6
(D)7/12
(E) None of these

31. Four-fifth of a number is 10 more than two-third of the same number. What is the number?
(A) 70
(B) 75
(C) 69
(D) 85
(E) None of these

Hello sir, i am Rajat Sharma. I am form Delhi. I am preparing for BSNL TTA exam. Can you provide me some information regarding the BSNL TTA Last Year Question Papers? Can you provide me the paper?

[Kiran Chandar]

As you have asked about the BSNL TTA paper, I am providing you with that

(1) Instrument is a device for determining
(a) the magnitude of a quantity
(b) the physics of a variable
(c) either of the above
(d) both (a) and (b)
(2) Electronic instruments are preferred because they have
(a) no indicating part
(b) low resistance in parallel circuit
(c) very fast response
(d) high resistance in series circuit
(e) no passive elements.
(3) A DC wattmeter essentially consist of
(a) two ammeters
(b) two voltmeters
(c) a voltmeter and an ammeter
(d) a current and potential transformer
(4) Decibel is a unit of
(a) power
(b) impedance
(c) frequency
(d) power ratio
(5) A dc voltmeter may be used directly to measure
(a) frequency
(b) polarity
(c) power factor
(d)power
(6) An accurate voltmeter must have an internal impedance of
(a) very low value
(b) low value
(c) medium value
(d) very high value
(7) The insulation resistance of a transformer winding can be easily measured with
(a) Wheatstone bridge
(b) megger
(c) Kelvin bridge
(d) voltmeter
(8) A 100 V voltmeter has full-scale accuracy of 5%. At its reading of 50 V it will give an error of
(a) 10%
(b) 5%
(c) 2.5%
(d) 1.25%
(9) You are required to check the p. f. of an electric load. No p.f. meter is available. You would
use:
(a) a wattmeter
(b) a ammeter, a voltmeter and a wattmeter
(c) a voltmeter and a ammeter
(d) a kWh meter
(10) The resistance of a field coil may be correctly measured by using
(a) a voltmeter and an ammeter
(b) Schering bridge
(c) a Kelvin double bridge
(d) a Maxwell bridge
(11) An analog instrument has output
(a) Pulsating in nature
(b) Sinusoidal in nature
(c) Which is continuous function of time and bears a constant relation to its input
(d) Independent of the input quantity
(12) Basic charge measuring instrument is
(a) Duddel's oscillograph
(b) Cathode ray oscillograph
(c) Vibration Galvanometer
(d) Bailastic Galvanometer
(e) Battery Charging equipment

(13) A.C. voltage can be measured (using a d.c. instrument) as a value obtained
(a) by subtracting the d.c. reading from it's a.c. reading.
(b) Using the output function of the multimeter
(c) By using a suitable inductor in series with it
(d) By using a parallel capacitor with it
(e) None of the above
(14) A moving coil permanent magnet ammeter can be used to measure
(a) D. C. current only
(b) A. C. current only
(c) A. C. and D. C. currents
(d) voltage by incorporating a shunt resistance
(e) none of these
(15) Select the wrong statement
(a) the internal resistance of the voltmeter must be high
(b) the internal resistance of ammeter must be low
(c) the poor overload capacity is the main disadvantage of hot wires instrument
(d) the check continuity with multimeter, the highest range should be used.
(e) In moving iron voltmeter, frequency compensation is achieved by connecting a capacitor across its
fixed coil.
(16) Which of the following instrument is suitable for measuring both a.c. and d.c.
quantities.
(a) permanent magnet moving coil ammeter.
(b) Induction type ammeter.
(c) Quadrant electrometer.
(d) Moving iron repulsion type ammeter.
(e) Moving iron attraction type voltmeter.
(17) Swamping resistance is used in moving coil instruments to reduce error due to
(a) thermal EMF
(b) temperature
(c) power taken by the instrument
(d) galvanometer sensitivity.
(18) A power factor meter is based on the principle of
(a) electrostatic instrument
(b) Electrodynamometer instrument
(c) Electro thermo type instrument
(d) Rectifier type instrument.
(19) A potentiometer recorder is used for
(a) AC singles
(b) DC signals
(c) both (a) and (b)
(d) time varying signals
(e) none of these.
(20) Transformers used in conjunction with measuring instruments for measuring purposes are
called
(a) Measuring transformers
(b) transformer meters
(c) power transformers
(d) instrument transformers
(e) pulse transformers.
(21) Leakage flux in an electrical machine is measure by
(a) Ballistic galvanometer
(b) Flux meter
(c) Either (a) or (b)
(d) Vibration galvanometer
(e) CRO
(22) A C.R.O. is used to indicate
(a) supply waveform
(b) magnitude of the applied voltage
(c) B.H. loop
(d) all of these
(e) Magnitude of the current flowing in it.
(23) An oscillator is a
(a) an amplifier having feedback network
(b) a high gain amplifier
(c) a wide band amplifier
(d) a untuned amplifier
(e) None of these
(24) Distortion can be measured by
(a) Wave meter
(b) Digital filters
(c) Wein bridge circuit
(d) Bridge T filter circuit
(25) Series connected Q- meter is preferable for measurement of components having
(a) high impedance
(b) low impedance
(c) both (a) and (b)
(d) high frequency
(e) low capacitance
(26) A potentiometer is
(a) an active transducer
(b) a passive transducer
(c) a secondary transducer
(d) a digital transducer
(e) a current sensing transducer
(27) The basic components of a digital voltmeter are:
(a) A/D converter and a counter
(b) A/D converted and a rectifier
(c) D/A converter and a counter
(d) Ramp generator and counter
(e) Comparator
(28) Which of the following electrical equipment cannot convert ac into dc
(a) diode
(b) converter
(c) transformer
(d) mercury arc rectifier
(29) Voltage measurement are often taken by using either a voltmeter or
(a) an ammeter
(b) an ohmmeter
(c) an oscillator
(d) a watt-meter
(30)The electric device which blocks DC but allows AC is called:
(a) capacitance
(b) inductor
(c) an oscilloscope
(d) a watt-meter
(31 ) The range of an ammeter can be extended by using a
(a) shunt in series
(b) shunt in parallel
(c) multiplier in series
(d) multiplier in parallel
(32)A device that changes one form of energy to another is called
(a) rheostat
(b) oscillator
(c) transducer
(d) varicap
(33) Aquadag is used in CRO to collect
(a) primary electron
(b) secondary electron
(c) both primary and secondary
(d) none of above
(34) A vertical amplifier for CRO can be designed for
(a) only a high gain
(b) only a broad bandwidth
(c) a constant gain time bandwidth product
(d)all of the above
(35) One of the following is active transducer
(a) Strain gauge
(b) Selsyn
(c) Photovoltic cell
(d) Photo emissive cell
(36) The dynamic characteristics of capacitive transducer are similar to those of
(a) low pass filter
(b) high pass filter
(c) band pass filter
(d) band stop filter
(37) Thermocouples are
(a) passive transducers
(b) active transducers
(c) both active and passive transducers
(d) output transducers
(38) The size of air cored transducers as compare to iron core counter part are
(a) bigger
(b) smaller
(c) same
(39) From the point of view of safety, the resistance of earthing electrode should be:
(a) low
(b) high
(c) medium
(d) the value of resistance of electrode does not effect the safety
(40) In CRT the focusing anode is located
(a) between pre accelerating and accelerating anodes
(b) after accelerating anodes
(c) before pre accelerating anodes
(d) none of above
(41) Which transducer converts heat energy into electrical energy
(a) I. V. D. T.
(b) thermocouple
(c) photoconductor
(d) none of the above
(42) Which of photoelectric transducer is used for production of electric energy by converting
solar energy
(a) photo emission cell
(b) photo diode
(c) photo transistor
(d) both (b) and (c)
(43) Which of the following instruments consumes maximum power during measurement?
(a) induction instruments
(b) hot wire instruments
(c) thermocouple instruments
(d) electrodynamometer instruments
(44) Which of the following meters has the best accurancy
(a) moving iron meter
(b) moving coil meter
(c) rectifier type meter
(d) thermocouple meter
(45) The function of the safety resistor in ohm meter is to
(a) limit the current in the coil
(b) increase the voltage drop across the coil
(c) increase the current in the coil
(d) protect the battery
(46) Which of the following instruments is free from hysteresis and eddy current losses?
(a) M.l. instrument
(b) electrostatic instrument
(c) electrodynamometer type instrument
(d)all of these
(47) The dielectric loss of a capacitance can be measured by
(a) Wien bridge
(b) Owen bridge
(c) Schering bridge
(d) Maxwell bridge
(48) Reed frequency meter is essentially a
(a) recording system
(b) deflection measuring system
(c) vibration measuring system
(d) oscillatory measuring system
(49) In measurements made using a Q meter, high impedance elements should preferably be
connected in
(a) star
(b) delta
(c) series
(d) parallel
(50) A digital voltmeter measures
(a) peak value
(b) peak-to-peak value
(c) rms value
(d) average value