Question 1 of 69

1. How many two-way switches are required in godown wiring to control four lamps?

2

3

4

5

Question 1 of 69

Question 2 of 69

2. Why is the tree system of wiring most suitable for multistoried buildings?

Offers minimum voltage drop

Easy load balancing

Constant voltage distribution

Easy fault finding with many fuses

Question 2 of 69

Question 3 of 69

3. What does MCB stand for?

Maximum Current Breaker

Minimum Current Breaker

Minute Control Breaker

Miniature Circuit Breaker

Question 3 of 69

Question 4 of 69

4. How many link clips are packed per BIS rules in cardboard boxes?

100 clips

50 clips

150 clips

75 clips

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Question 5 of 69

5. What is the purpose of underwriter's knot for pendent holder connection?

Prevent excessive cap cover pressure

Increase mechanical strength

Avoid loose connections

Reduce the strain from the terminals of accessories

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Question 6 of 69

6. Why shouldn't home theatre wiring run with power wiring?

Control temperature in home theatre wiring

Reduce power consumption in power supplies

Avoid electrical interference in audio/video system

Avoid leakage current in home theatre wiring

Question 6 of 69

Question 7 of 69

7. What is the name of this type of relay?

Electromagnetic relay

Dry reed relay

Mercury wetted contact relay

Impulse relay

Question 7 of 69

Question 8 of 69

8. How are ceiling roses classified?

General accessories

Safety accessories

Outlet accessories

Holding accessories

Question 8 of 69

Question 9 of 69

9. What is the application of DC series MCB?

Locomotives

AC motor

Air conditioners

DC motor

Question 9 of 69

Question 10 of 69

10. What is a die stock set used for?

Cut external threads on square pipe

Cut internal threads on rectangular pipe

Cut internal threads on cylindrical pipe

Cut external threads on cylindrical pipe

Question 10 of 69

Question 11 of 69

11. What is the purpose of a circuit diagram in wiring installation?

Estimate various accessories

Show physical position of accessories

Show schematic connections

Quickly inform circuit purpose

Question 11 of 69

Question 12 of 69

12. Which type of load is protected by the L-series MCB?

Hand tools

Air conditioner

Motors

Geyser

Question 12 of 69

Question 13 of 69

13. Which electrical accessory belongs to general classification?

Pendent lamp holder

Fuse

Ceiling roses

Intermediate switch

Question 13 of 69

Question 14 of 69

14. What type of relay is this?

Dry reed relay

Impulse relay

Electromagnetic relay

Latching relay

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Question 15 of 69

15. What is the fusing factor for rewireable fuse?

2.1

1.1

2.5

1.4

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Question 16 of 69

16. Which material is used as filler for fixing screw holes on ceilings?

Poly vinyl chloride

Cement

Paper

Nylon

Question 16 of 69

Question 17 of 69

17. What does ECC stand for?

Earth Continuity Conductor

Earth Conductor Continuity

Earth Carrying Conductor

Earth Continuity Cable

Question 17 of 69

Question 18 of 69

18. Which circuit breaker is used above 100A current?

Residual Current Circuit Breaker (RCCB)

Moulded Case Circuit Breaker (MCCB)

Miniature Circuit Breaker (MCB)

Earth Leakage Circuit Breaker (ELCB)

Question 18 of 69

Question 19 of 69

19. What protection does a residual current circuit breaker offer?

Protection from short circuit

Protection from over load

Protection from leakage current

Protection from shock

Question 19 of 69

Question 20 of 69

20. Where is the Iron Clad Double Pole (ICDP) main switch typically used?

Single phase domestic installations

Control main or branch circuits

Large industrial installations

Three phase power circuit installations

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Question 21 of 69

21. What is the term for the time taken by a fuse to interrupt a faulty circuit?

Cut-off factor

Fusing factor

Fusing current

Time factor

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Question 22 of 69

22. What does the symbol marked 'X' indicate?

Number of battern (or) pipe to be fixed

Number of clamps (or) clips to be fixed

Number of switches to be connected

Number of wires run on the limb

Question 22 of 69

Question 23 of 69

23. What is the name of the conduit accessory?

Inspection Bend

Solid elbow

Inspection elbow

Solid bend

Question 23 of 69

Question 24 of 69

24. Which tool is used to bend conduits?

Coupler

Pipe vice

Hickey

Bench vice

Question 24 of 69

Question 25 of 69

25. Where is the phase conductor looped in a looping wiring system?

Junction box

Socket connection

Distribution box

Switch box

Question 25 of 69

Question 26 of 69

26. Which lamp holder is used for lamps above 300 watts?

Goliath screw holder

Angle holder

Edison screw holder

Bracket holder

Question 26 of 69

Question 27 of 69

27. What is this diagram called?

Wiring diagram

Schematic diagram

Layout plan

Installation plan

Question 27 of 69

Question 28 of 69

28. Why is separate wiring recommended for home theatre and power wiring?

Avoid electrical interference

Maintain constant voltage level

Avoid electrical fire

Reduce power loss

Question 28 of 69

Question 29 of 69

29. Why is copper fuse wire tin-coated?

Increase mechanical strength

Prevent copper oxidation

Withstand high temperature

Increase fusing factor

Question 29 of 69

Question 30 of 69

30. What is this type of wiring called?

Tunnel wiring

Godown wiring

Staircase wiring

Hostel wiring

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Question 31 of 69

31. How many two-way switches with intermediate switch are needed to control one lamp from three places?

4

1

2

3

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Question 32 of 69

32. What is the maximum PVC conduit size for safe cold bending?

19 mm

12 mm

50 mm

25 mm

Question 32 of 69

Question 33 of 69

33. Which relay type works with both AC and DC?

Ferred relay

Dry reed relay

Thermal relay

Impulse relay

Question 33 of 69

Question 34 of 69

34. Which equipment uses 'L' series MCB?

Halogen lamp

Air conditioner

Motors

General lighting

Question 34 of 69

Question 35 of 69

35. What is the purpose of an ELCB?

Protects from overload

Detects circuit faults

Protects from short circuit

Monitors residual current

Question 35 of 69

Question 36 of 69

36. What is the fusing factor for high rupturing capacity fuses (HRC)?

1.0

1.4

1.1

1.7

Question 36 of 69

Question 37 of 69

37. What is the function of bimetallic strip in MCB?

Over voltage protection

Over load protection

Earth leakage protection

Short circuit protection

Question 37 of 69

Question 38 of 69

38. What is this lighting circuit called?

Corridor lighting wiring

Staircase lighting wiring

Godown lighting wiring

Tunnel lighting wiring

Question 38 of 69

Question 39 of 69

39. What is this wiring circuit application?

Two lamps controlled by two switches

Two lamps controlled by one switch

One lamp bright and two lamps dim operation

Two lamps dim operation only

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Question 40 of 69

40. Why is loop-in method preferred in domestic wiring?

No separate joints needed

Easy fault identification

More sub-circuits possible

More tappings possible

Question 40 of 69

Question 41 of 69

41. What is the purpose of flexible cords in domestic wiring?

Permanent connection

Concealed wiring

Connection for transportable appliances

Run cable through ceiling holes

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Question 42 of 69

42. Which type of MCB is suitable for halogen lamps?

'L' and 'G' series MCBs

'DC' series MCBs

'L' series MCBs

'G' series MCBs

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Question 43 of 69

43. Which insulation is needed for proper function and basic protection?

Supplementary insulation

Double insulation

Functional insulation

Reinforced insulation

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Question 44 of 69

44. What is this electrical appliance accessory called?

2 Pin plug

Three pin plug

Iron connector with direct entry

Flat connector with side entry

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Question 45 of 69

45. What type of wiring is this?

PVC conduit wiring

CTS wiring

PVC casing and capping wiring

Cleat wiring

Question 45 of 69

Question 46 of 69

46. Which accessories operate portable appliances?

Controlling accessories

Holding accessories

Outlet accessories

Safety accessories

Question 46 of 69

Question 47 of 69

47. What does this symbol indicate?

Ceiling fan

Table fan

Bracket fan

Exhaust fan

Question 47 of 69

Question 48 of 69

48. What does AWG stand for?

American Wire Guard

American Wire Gauge

American Wire Group

American Wire Grade

Question 48 of 69

Question 49 of 69

49. Which conduit type is used for gas-tight explosive installations?

Flexible conduits

Flexible non-metallic conduits

Rigid non-metallic conduits

Rigid steel conduits

Question 49 of 69

Question 50 of 69

50. Which wiring is suitable for temporary installations?

Metal conduit wiring

Concealed wiring

Cleat wiring

PVC conduit wiring

Question 50 of 69

Question 51 of 69

51. Which category does fuse accessories belong to?

Safety accessories

Outlet accessories

Controlling accessories

Holding accessories

Question 51 of 69

Question 52 of 69

52. What type of fuse is this?

Diazed screw type cartridge fuse

High rupturing capacity fuse

Ferrule contact cartridge fuse

Knife edge cartridge fuse

Question 52 of 69

Question 53 of 69

53. What is this BIS symbol called?

Lamp

Two way switch

Intermediate switch

Multi-position switch

Question 53 of 69

Question 54 of 69

54. What is this wiring method called?

Joint box method

Loop in method using 3 plate ceiling rose

Looping back method

Loop in method using 2 plate ceiling rose

Question 54 of 69

Question 55 of 69

55. Where is the Tree system of wiring most suitable?

Godown wiring

Domestic wiring

Multi-storied building

Industrial wiring

Question 55 of 69

Question 56 of 69

56. Calculate the earth fault loop impedance if ELCB tripping current is 30 mA?

1666 Ω

16666 Ω

16.66 Ω

166 Ω

Question 56 of 69

Question 57 of 69

57. What type of diagram is this?

Circuit diagram

Installation plan

Layout diagram

Wiring diagram

Question 57 of 69

Question 58 of 69

58. What is this accessory symbol called?

Bell push switch

Multi position switch single pole

Two way switch

One way switch two poles

Question 58 of 69

Question 59 of 69

59. What is the purpose of the fuse cut-out at incoming power supply?

Protect from leakage current

Prevent line overloading

Maintain stable voltage

Prevent electric shock

Question 59 of 69

Question 60 of 69

60. What is the advantage of concealed wiring?

Protection against moisture

High insulation resistance

Easy to maintain

Less voltage drop

Question 60 of 69

Question 61 of 69

61. What is the name of this electrical accessory?

Angle swivel lamp holder

Goliath Edison screw lamp holder

Bracket holder

Edison screw type holder

Question 61 of 69

Question 62 of 69

62. Which type of switch is used in the circuit?

Two way switch

Multiposition switch

Intermediate switch

One way switch

Question 62 of 69

Question 63 of 69

63. How are conduit pipes specified?

Outer diameter in mm

Wall thickness in mm

Inner diameter in mm

Length in metre

Question 63 of 69

Question 64 of 69

64. What is the primary function of a circuit breaker?

Physical breaking contact at abnormal condition

Making contact at abnormal condition

Breaking automatically at abnormal condition

Making contact at normal condition

Question 64 of 69

Question 65 of 69

65. What is the name of this wiring circuit symbol?

Fuse

Pull switch

Plug and socket

Link

Question 65 of 69

Question 66 of 69

66. What is the standard thread length on rigid conduits as per BIS?

13mm - 25mm

11mm - 27mm

9mm - 20mm

15mm - 30mm

Question 66 of 69

Question 67 of 69

67. What happens to earth resistance if earth pipe length increases?

Remains same

Infinity

Increases

Decreases

Question 67 of 69

Question 68 of 69

68. What happens when using low current rated cable for higher current loads?

Voltage drop increases

Voltage drop decreases

Cable damage due to heat

Load current increases

Question 68 of 69

Question 69 of 69

69. What is a group of four insulated conductors called?

Pair

Core

Quad

Layer

Question 69 of 69