BSNL EMPLOYEES UNION Telecom Mechanic Examination 2013

Mathematics

1 If 40% of 40% of x=40, then value of x is

(A) 100 (B) 400 (C) 250 (D) 1000

2. 75% of a number when added to 75 becomes the number itself. The

number is

(A) 150 (B) 200 (C) 225 (D) 300

3. In an examination 93% of students passed and 259 failed. The total

number of students is

(A) 3700 (B) 500 (C) 3950 (D) None of these

4. The value of machinery depreciates 10% annually. What will be its value

after 2 years, hence if the present value is Rs. 15 000/-.

(A) 12105 (B) 12530 (C) 12150 (D) 12125

5. The population of a town increases by 5% annually. If it is 66150 now, its

population 2 years ago is

(A) 65000 (B) 62000 (C) 61000 (D) 60000

6. In an election between two candidates the candidate who gets 30% of the

votes polled is defeated by 15000 votes. The number of votes polled by

the winning candidate is

(A) 11250 (B) 15000 (C) 26250 (D) 37500

7. The average of 3 numbers is 17 and that of the first two is 16. The third

number is

(A) 1 (B) 16 (C) 17 (D) 19

8. The average of 50 numbers is 38. If two numbers namely 45 and 55 are

discarded the average of remaining numbers is

(A) 36.50 (B) 37 (C) 37.50 (D) 37.80

9. The average consumption of petrol for a car for seven months is 110 litres

and for next five months it is 86 litres. The average monthly consumption

is

(A) 98 litres (B) 100 litres (C) 102 litres (D) 96 litres

10. If one half of a number is 8 more than 1/3 of that number, the number is

(A) 36 (B) 48 (C) 52 (D) 60

11. The ratio of monthly income to the savings of a family is 9:2. If the monthly

income of the family is Rs.2700, What is monthly expenditure

(A) Rs.600 (B) Rs.1800 (C) Rs.2100 (D) None of these

12. In an examination 65% of the total examinees passed. If the number of

failure was 420, What was the total number of examinees?

(A) 1200 (B) 685 (C) 690 (D) 1000

13. Dr. Sharma bought a car and got 15% of its original price on dealer‟s discount.

He then sold it with 20% profit on his purchase price. What percentage

profit did he got on the original price?

(A) 2% (B) 12% (C) 5% (D) 17%

14. 10% of a number is 30% of 600. Which is the number?

(A) 1000 (B) 1200 (C) 1800 (D) 500

15. Salary of an Officer increases every year by 10%. His salary in the year

2004 was Rs. 21,780/- What was his salary in 2002.

(A) 15000 (B) 18000 (C) 17424 (D) 16000

16. A certain amount of money doubles in 10 years at Simple interest. What is

the rate of interest?

(A) 10% (B) 12% (C) 20% (D) 5%

17. 3x+7 = 16, the value of “x”

(A) 3 (B) 4 (C) 2 (D) 5

18. One person took a loan of Rs.5000/- for 3 years on Simple Interest. After 3

years he paid back Rs.6200/- including the principle and the interest accrued.

Calculate the rate of interest.

(A) 65 (B) 7% (C) 8% (D) 7.5%

19. The Value of Sin 600

A. 1/2 B.√3/2 C. 1/√2 D.1

20. A man buys a cycle for Rs.1400/- and sells at a loss of 15%. What is the

selling price of the cycle?

(A) Rs.1090/- (B) Rs.1160/- (C) Rs.1190/- (D) Rs.1202/-

21. If 18 is 15% of 30% of a certain number, then what is the number

(A) 250 (B) 450 (C) 300 (D)400

22. Simply the Expression X =3+X

2 3

A. 16 (B) 17 (C) 18 (D) 19

23. In what time would a sum double itself at 5% Simple Interest.

(A) 20 years (B) 40 years (C) 15 years (D) None of these

24. An article is sold for Rs.480/- Find its cost price, if it is sold at 20% loss

(A) Rs.700/- (B) Rs.500/- (C) Rs.600/- (D) Rs.800/-

25. If Sin A = 5/13, then the value of tan A is

(A)5/12 (B) 12/5 (C) 13/5 (D) None of these

26. A vendor bought 6 toffees for a rupee. How many for a rupee must he sell to

gain 20% profit

(A) 3 (B) 4 (C) 5 (D) 6

27. In the first ten overs of cricket game, the run rate was only 3.2 What should

be the run rate in the remaining 40 overs to reach the target 272 runs?

(A) 6 (B) 6.25 (C) 5.75 (D) 6.5

28. The value of” X” in the equation 3X-1 = 5

5X-3 8

(A) 6 (B) 7 (C) 8 (D) 9

29. Find the principle which amounts to Rs.1200 at 8% per annum, Simple interest

after 9 months

(A) 1032.08 (B) Rs.1123.80 (C) Rs.1132.08 (D) Rs.1323/-

30. The sum of two consecutive odd numbers is 32, the highest number is

(A) 17 (B) 15 (C) 14 (D) 18

31. The value of Sin 600. Cos 300 – Cos 600 Sin300

(A). √3/2 (B). ¼ (C) 1/√2 (D) ½

32. Krishnan is three times as old as his son. After ten years the sum of their

ages will be 80 years. The present age of the son is

(A )10 (B) 20 C. 15 (D) 25

33 Sin (A+B) = 1, Cos (A-B) =1, the value of A & B

(A) (900 ,300) (B) (600 300) (C)(600 450) (D) (450,450)

34. Two numbers are in the ratio 3:5. If 8 is added to each number, the ratio

becomes 2:3. The numbers are

(A) 6:10 (B) 24:40 (C) 12: 20 (D) 15: 25

35. If Cos A = ½, the value of „A‟

(A) 300 (B) 450 (C ) 600 (D) 900

36. If 8 men can do a piece of work in 15 days, in how many days can the same

work be done by 4 men?

(A) 30 days (B) 45 days (C) 25 days (D) 35 days

37. The value of „d‟ if 5-(2d-7) =0 is

9

(A) 6 (B) 14 (C) 9 (D) 7

38. If the total of four consecutive odd numbers is 40, then smallest number is

(A) 9 (B) 7 (C) 11 (D) 13

39. A man will get Rs.87/- as Simple Interest on Rs.725/- at 4% per annum is

(A) 3 yrs (B) 3 ½ years (C) 4 yrs (D) 5 yrs

40. The value of 7 Sin 300 Cos 600 is

(A) 3/2 (B) 6 (C) 7/4 (D) 9

41. If a piece of work could be completed in 24 days by 98 men, how many men

would it take to complete in 21 days?

(A) 122 (B) 112 (C) 132 (D) 102

42. The average of 25 results is 18, that of first 12 is 14 and of the last 12 is 17.

Thirteenth result is

(A) 78 (B) 85 (C) 28 (D) 72

43 In a class 50 children 40% play only cricket, 50% play only football and the

remaining play both games. How many children, in all, play football?

(A) 25 (B) 30 (C) 35 (D) 40

44. Three partners A, B & C invest Rs.13,000/-, Rs.17,000/- and Rs.5000/-

respectively. They have a profit of Rs.1750/- B‟s share of profit is

(A) Rs.650/- (B) Rs.850/- (C) Rs.250/- (D) Rs.750/-

45. A discount series of 10%, 20% & 40% is equal to a single discount of

(A) 50% (B) 56.80% (C) 70% (D) 70.28%

46. The average age of 12 students is 20 years. If one student is added the

average decreased by 1. Find the new age of the student.

(A) 19 yrs (B) 8 yrs (C) 7 yrs (D) 11 yrs

47. If A‟s income is 25% more than that of B, how much percent B‟s income is

less than that of A

(A) 15% (B) 25% (C) 20% (D) 18%

48. In an election one of the two candidates gets 42% of total votes still loses

by 368 votes. The total number of votes is

(A) 1800 (B) 2300 (C) 2000 (D) 2100

49. 13 chairs and 5 tables were bought for Rs.8280. If the average price of a

table be Rs.1227, average price of a chair is

(A) Rs.160 (B) Rs.163 (C) Rs.165 (D) Rs.170

50. A profit of Rs.1581 is to be divided among three partners A, B & C in the

ratio 1: 1: 1 The share of C will be

3 2 5

(A) Rs.255 (B) Rs.306 (C) Rs. 408 (D) None of these

51. If 36 men can do a certain piece of work in 25 days, in how many days will 15

men do it

(A) 60 days (B) 45 days (C) 50 days (D) 55 days

52. By selling an article for Rs.100, one gains Rs.10 Then the gain percent is

(A) 10% (B) 9% (C) 11 1 % (D) None of these

9

53. If I purchased 11 books for Rs.10 and sold all the books at the rate of 10

books for Rs.11, the profit percent is

(A) 10% (B) 11% (C) 21% (D) 100%

54. The ratio between two numbers is 3:4 and their sum is 420. The greater

number is

(A) 175 (B) 200 (C) 240 (D) 315

55. The present population of a town is 75,000. The population increases by 10%

in the first year and decreases by 10% in the second year. The population

after 2 years is

(A) 73,000 (B) 73,500 (C) 74,000 (D) 74,250

56. In an exam the pass percentage is 30. A student gets 175 marks and declared

failed by 5 marks .What is the total marks ?

(A) 600 (B) 1000 (C) 500 (D) 200

57. In what time will the interest on Rs.650 be Rs.312 at 6 percent

(A) 4 yrs (B) 6 yrs (C) 8 yrs (D) 10 yrs

58. 45% of _______+ 30% of 90 = 30% of 210

(A) 120 (B) 80 (C) 60 (D) 90

59. The average of three numbers is 77. The first number is twice the second

and the second is twice the third. Find the first number

(A) 13 (B) 13 (C) 12 (D) None of these

60. If Rs.200 doubles in 10 years at simple rate of interest, what is the rate of

interest.

(A) 5% (B) 10% (C) 8% (D) None of these

61. Rs.700 divided into three parts proportional to the fraction 1 : 1 : 3 then the

second part is 2 5 10

(A) Rs.360 (B) Rs.240 (C) Rs.140 (D) Rs.365

62. Two numbers are respectively 20% and 50% more than a third number. The

percentage that is first of the second is

(A) 20% (B) 50% (C) 70% (D) 80%

63. Of the three numbers, first is twice the second and second is twice the

third. The average of three numbers is 21. Find the largest number of

three

(A) 12 (B) 8 (C) 7

(D) 21

64. The value of 1-Sin2 A is

(A) Cos2 A (B) tan A (C)Sec2 A (D) Cos A

65. Raman is 7 times as old as his son. 10 years hence he will be 3 times as old as

his son .What are their present ages in years.

A. 6 and 42 B. 4 and 28 C. 3 and 21 D. 5 and 35

ANSWERS

1. C 8. C 15.B 22.C 29.C 36.A 43.B 50.B 57.C 64.A

2. D 9. B 16.A 23.A 30.A 37.A 44.B 51.A 58.B 65.D

3. A 10. B 17.A 24.C 31.D 38.B 45.B 52.C 59.D

4. C 11. C 18.C 25.A 32.C 39.A 46.C 53.C 60.B

5. D 12. A 19.B 26.C 33.D 40.C 47.C 54.C 61.C

6. C 13. A 20.C 27.A 34.B 41.B 48.B 55.D 62.D

7. D 14. C 21.D 28.B 35.C 42.A 49.C 56.A 63. A

BSNL EMPLOYEES UNION

TELECOM MECHANIC EXAMINATION 2013

General Science

1. Unit of Length

A. Square Meter B. Meter C. Kilogram D. Cubic Meter

2. Unit of Mass

A. Kilogram B. Newton C. Joule D. Kg/m3

3.Unit of Time

A. Meter/Second B. Ohm C. Second D. Hertz

4 . Mass is measured by

A. Beam Balance B. Spring Balance C. Screw Gauge D. Barometer

5. Weight is measured by

A. Screw Gauge B. Beam Balance C. Pendulam D. Spring Balance

6. The degree of hotness of an object is called its

A. Heat B. Temperature C. Celsius D. Kelvin

7. Normal body temperature of a healthy person

A. 370 F B. 98.40 C C. 9.840 F D. 370 C

8. Specific gravity of Mercury

A. 1 B. 0 C. 13.6 D. 1.36

9. Density of water is ………………kg m-3

A. 100 B. 10 C. 1 D. 1000

10. Unit of temperature

A. Fared B. Joule C. Ohm D. Degree Kelvin

11. Germanium and Silicon are examples of

A. Semi conductor B. Conductor C. Insulator D. None of three

12. In electric circuit, electrons flow from the …………………….terminal of the

battery through the wire

A. Positive B. Negative C. None of these

13. A …………………. Switch protects the house from electrical fires by

breaking a circuit

A. Switch B. Conductor C. Fuse D. Regulator

14. Unit of electric current

A. Volt B. Ohm C. Watts D. Ampere

15. Unit of Resistance

A. Ohm B. Ampere C. Volt D. Coulomb

16. Resistance of metal wire is directly proportional to

A. Thickness of the wire B. Breadth of wire

C. Length of wire D. Radius of wire

17. In a vacuum type lamp, the tungsten filament is arranged in

A. Straight B. Circular C. Rectangular D. Zig Zag

18. The life of an electric bulb is about

A. 10 hours B. 1000 hours C. 500 hours D. 100 hours

19. In electrical heaters the heating coil are made up of strip by

A. Carbon B. Nichrome C. Tungsten D. Iron

20. Multimeter is used to measure

A. Voltage B. Current C. Resistance D. All the above

21. Ohms law is valid when …………………….remains constant

A. Temperature B. Current C. Voltage D. Resistance

22. The device used to measure resistance of a circuit

A. Ohm meter B. Voltmeter C. Megges D. Ammeter

23. The gas used in fluorescent table light is

A. Carbon B. Argon C. Nitrogen D. Helium

24. The fuse wire is made of

A. Iron B. Aluminium C. Lead D. Copper

25. The modified form of a moving coil galvanometer is

A. Voltmeter B. Ammeter C. Ohmmeter D. Multimeter

26. The resistance of a thick wire is ………………. than of a thin wire

A. Lesser than B. Equal to C. More than D. None of these

27. The instrument used to measure potential difference between the two

points of the circuit

A. Ohm meter B. Ammeter C. Voltmeter D. Barometer

28. A key used to break the circuit

A. Regulator B. Shunt C. Commutator D. Switch

29. A cell of potential difference 12V is connected to a bulb. The

resistance of filament of bulb when it glows, is 24Ω, the current drawn

from the cell is

A. 12A B. 0.5A C. 2A D. 8A

30. An appliance which is connected in the circuit

A. Load B. Shunt C. Switch D. Key

31. How are the potential difference (V) Current (I) and resistance ( R)

related

A. I= VxR B. I= R C. I= V D. None of these

V R

32. Unit of potential difference

A. Joule B. Volt C. Coulomb D. Ampere

33. Calculate the effective resistance between the points A and B in the

following circuit

A. 6Ω B. 12Ω C. 18Ω D. 4Ω

6Ω 6Ω

A B

6Ω

34. A Galvanometer can be converted into a voltmeter by connecting a high

resistance in …………………………….. with it

A. Series B. Parallel C. none of these

35. A temperature difference on 200C on the Fahrenheit scale is

A. 300F B. 680F C. 200F D. 720F

36. A switch is always connected to

A. Earth wire B. Neutral wire C. live wire D. none of these

37. Watt is the unit of

A. power B. energy C. force D. current

38. When a semi conductor is heated its resistance

A. remains same B. decreases C. increases D. may increase or decrease

39. Domestic electrical wiring is basically a

A. Combination of series and parallel connections

B. Parallel connections

C. Series connections

D. none of these

40. An electric current produces

A. Magnetic effect

B. Chemical effect

C. Heating effect

D. All the above.

41. Which of the following instrument is used for detecting electric

charge

A. Ammeter B. Galvanometer C. Electroscope D. none of these

42. Safety fuse wire used in electrical circuit is made of a material having

A. high melting point B. low melting point

C. high resistance D. low specific heat

43. Vapour used in tube light is

A. Neon B. Freon C. Oxygen D. Mercury

44. If the temperature of a semi conductor is increased the conductivity

A. increase B. decrease C. remains same

D. depends on whether it is silicon or germanium

45. The device used for producing electric current is called

A. Generator B. Galvanometer C. Ammeter D. Motor

46. In a Fluorescent tube light, choke acts as

A. Starter B. power factor improving device

C. Source of heat D. Current limiting device

47. What is the commercial unit of energy

A. Kilowatt B.Kilo joule C. Kilowatt hour D. Megawatt.

48. A lamp consumes 1000J of electrical energy in 10s.What is its power

A. 10W B. 100W C. 230W D. 120W

49 The Normal life span of Fluorescent lamp is

A. 500 hrs B. 1000 hrs C. 1500 hrs D. 7500 hrs.

50. Two resistance 12 Ω and 6 Ω are connected in parallel, then equivalent

resistance is

A 18 Ω B. 4 Ω C. 12 Ω D. 18 Ω

ANSWERS

1. B 11. A 21. A 31. C 41. C

2. A 12. B 22. A 32. B 42. B

3. C 13. C 23. B 33. D 43. D

4. A 14. D 24. C 34. A 44. A

5. D 15. A 25. D 35. B 45. A

6. B 16. C 26. A 36. C 46. D

7. D 17. D 27. C 37. A 47. D

8. C 18. B 28. D 38. B 48. B

9. D 19. B 29. B 39. B 49. D

10. D 20. D 30. D 40. D 50. B

BSNL EMPLOYEES UNION Telecom Mechanic Examination 2013

Questions on Departmental Practice

1. PIJF Stands for …………..Polythene Insulated Jelly filled cable

2. ADSL-Asymmetric Digital Subscriber Line

3. DSLAM-Digital Subscriber Line Access Multiplexer

4. CMD- Chairman and Managing Director

5. CMD of BSNL - Mr. Rakesh Kumar Upadhyay

6. DP- Distribution Point

7. Primary Cable- Cable from Exchange up to Cabinet

8. Secondary Cable- Cable from Cabinet up to Pillar

9. Distribution Cable – Cable from Pillar to DP

10. Post Used For External DP - A4BC Post

11. Height of A4BC Post – 20 feet

12. TSF Kit- Thermo Shrink filled

13. GSM- Global system for Mobile Communication

14. CDMA- Code Division Multiple Access

15. FDMA –Frequency Division Multiple Access

16. CM-Consumer Mobility

17. CFA-Consumer Fixed Access

18. EB- Enterprise Business

19. ISP-Internet Service Provider

20. NIB-National Internet Backbone

21. EPBT-Electronic Push Button Telephone

22. PCMCIA - Personal Computer Memory Card International Association,

23. www- World wide Web

24. VAS- Value Added Service

25. PRBT- Premium Ring Back Tone

26. HDPE- High Density Polyethylene

27. Splitter in broad band is used for splitting ...........(Signals)

28. For wireless connectivity ..............type modem is used (Type -2)

29. Lead generation means- Generating Customer requests.

30. FOS- Feet on Street

31. OFC- Optical Fibre Cable

32. The Optical Fibre Cable is pulled through 50mm outer diameter

......................(HDPE Pipes)

33. The length of HDPE pipe used in OFC laying is .................(5 meters length)

34. The colour of OFC route Indicator- (The route indicators are painted yellow)

35. The joint indicators in OFC joints are painted ................(red)

36. Depth of OFC trench is ................( The depth of the trench from top of the

surface shall not be less than 165 cms )

37. The beam width in a highway BTS for GSM Mobile compared to city BTS

is...........(is less than )[ Beam width 33 for High way, 65 for city, and 90 for

rural ]

38. ISDN- Integarted Services Digital Network

39. FWT-Fixed Wireless Terminal

40. MDF-Main Distribution Frame

41. IDF- intermediate distribution frame

42. DWDM- Dense wavelength division multiplexing

43. DWDM technique enables bidirectional communications over one strand of

fiber, as well as multiplication of capacity.

44. Project Vijay is for - Sales in Mobile

45. Project Udan is for - Sales in Land Line and Broad band.

46. .................Plan facilitates use of the same telephone connection from four

different telephone connections provided in parallel within the same room.(

Plan 101)

47. In plan 102 maximum ..............sockets are used.(4)

48. Internal wiring is restricted to 50 meters in ................Plan (102)

49. This plan consists of one main and one external extension (Plan 104)

50. This type is possible only when the two instruments are within the same

building. Either of the two telephones can make or receive a call and transfer

the call to the other by buzzing. No inter-communication facility is available.

(Plan 105)

51. To have more than one telephone instrument, working on the same

telephone line.(Plan 101)

52. One portable telephone to be used at different locations in the same

building. (Plan 102)

53. More than one telephone with intercommunication facility in the same

building(Plan 103)

54. Two telephones fitted in different buildings with intercommunication facility

(Plan 104)

55. Two telephones with a change over switch with signaling facility, but

without intercommunication facility.(Plan 105)

56. Decadic dialing is also known as

....................................................dialing(Pulse)

57. DTMF dialing is also known as .............(Tone Dialing)

58. After restructuring Mobile services are attached to ...............(CM)

59. ................. is used for making the core of OFC (Silica)

60. Generally the ................secondary cells are used in our Department. (lead acid

type)

61. The Lead Acid cells have electrodes of .....................immersed in an electrolyte

of ................ in a suitable container. (lead, dilute H2S04)

62. In Lead Acid cell, Under fully charged condition the active materials on +ive

plate is..............., whilst that on –ive plate is.......................( PbO2, spongy lead)

63. In Lead Acid cell, on discharge, an increasing proportion of the active materials

of both +ve and –ve plate is converted to.................... (lead sulphate (PbSO4).)

64. The theory of secondary cell is based on the ..............................(double

sulphation theory)

65. VRLA Stands for .....................(valve regulated lead acid)

66. VRLA Batteries work on the ........................... principle (oxygen re combination)

67. Recommended Float Voltage of a cell is ................(2.25 Vpc At 270c)

68. Recommended Boost Voltage of a cell is ................( 2.30 Vpc At 270c

69. The voltage and S.G. go down during discharge and increase during charge.

70. This evolution of oxygen and hydrogen which takes place is known as “

GASSING “ and indicates that the cell is nearing fully charged condition

71. VPC stands for ..........( volts per cell)

72. SMPS stands for ....................( Switch Mode Power Supply)

73. The capacity of a battery is measured in ................(AH-Ampere Hour)

74. To check the specific gravity of electrolyte ............... is used (Hydrometer)

75. DTMF-Stands for Dual Tone Multi Frequency

76. In a PIJF Cable the mate colours are (White,Red,Black,Yellow)

77. 0012 represents a DP working in ................(Inner Zone)

78. 4303 is a DP working in.............. Pillar (Pillar-43)

79. Instrument used to measure current – Ammeter

80. Instrument used to measure Voltage – Voltmeter

81. Multimeter is used to measure ..............(Current,voltage and Resistance)

82. The circuit between two exchanges in a local network is called …..… ……..

.( . Junction circuit)

83. ……………. is the last cable termination point from where subscriber line is

Connected. (Distribution point (D.P)

84. The cable connecting Pillar and DP is called ……………………(

Distribution cable)

85. In ducted cable system ……………………….. cables are used.

(Unarmoured cables)

86. Entry of moisture into the core of cable is prevented by filling

………………… in PIJF cables. (Jelly compound)

87. In Telecommunication cable network cables are required to be protected

from ………….prevent damages from external sources. (Mechanical protection)

88. PCM cables are designed with a conductor diameter of ………..mm.( 0.63

mm)

89. Paper Insulated cables are prone to more faults due to entry of ………(

moisture or water)

90. Overlay of conductors in a pair is done during manufacture of telecom

cable to prevent effect of ………………………. (cross talk)

91. A 400 pair cable consist of ……………. No of super units of

…………..……………… size. . (8, 50 pairs)

92. While crossing power cables the telecom cables should be laid at

...............to power cables. (Right Angle)

93. Indicator kept at 200 m apart in the route of the cable is

called......................

94. When underground cable is led directly to customer’s premises, the

distribution point (DP) becomes the terminating point and is known as

......................( Internal DP).

95. The first Stroke in a four stroke engine is .......................(Suction Stroke)

96. Fuel is injected during ...........stroke (Power Stroke)

97. The colour of pair 3 in a switch board cable (Green-White)

98. Protective device in LJU (GD Tube- Gas Discharge Tube)

99. In CDOT MBM –L .............BMs are there (16) [ BM –Base Module, SBM-

Single Base Module, MBM-Multi Base Module]

100. In CDOT In MBM XL ..........BMs are there –(32)