Question 1 of 69

1. What is a die stock set used for?

Cut external threads on square pipe

Cut internal threads on cylindrical pipe

Cut internal threads on rectangular pipe

Cut external threads on cylindrical pipe

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Question 2 of 69

2. Which accessories operate portable appliances?

Outlet accessories

Safety accessories

Holding accessories

Controlling accessories

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Question 3 of 69

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

Avoid electrical fire

Maintain constant voltage level

Avoid electrical interference

Reduce power loss

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Question 4 of 69

4. What type of diagram is this?

Layout diagram

Wiring diagram

Circuit diagram

Installation plan

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Question 5 of 69

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

Geyser

Air conditioner

Hand tools

Motors

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Question 6 of 69

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

Physical breaking contact at abnormal condition

Breaking automatically at abnormal condition

Making contact at normal condition

Making contact at abnormal condition

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Question 7 of 69

7. Which tool is used to bend conduits?

Hickey

Bench vice

Coupler

Pipe vice

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Question 8 of 69

8. What is the name of the conduit accessory?

Inspection elbow

Solid elbow

Inspection Bend

Solid bend

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Question 9 of 69

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

Reinforced insulation

Supplementary insulation

Double insulation

Functional insulation

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Question 10 of 69

10. What is this type of wiring called?

Tunnel wiring

Hostel wiring

Godown wiring

Staircase wiring

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Question 11 of 69

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

50 mm

12 mm

25 mm

19 mm

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Question 12 of 69

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

Large industrial installations

Three phase power circuit installations

Single phase domestic installations

Control main or branch circuits

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Question 13 of 69

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

Number of wires run on the limb

Number of switches to be connected

Number of battern (or) pipe to be fixed

Number of clamps (or) clips to be fixed

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Question 14 of 69

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

Protection from leakage current

Protection from short circuit

Protection from over load

Protection from shock

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Question 15 of 69

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

Ferred relay

Dry reed relay

Thermal relay

Impulse relay

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Question 16 of 69

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

Flexible non-metallic conduits

Rigid non-metallic conduits

Rigid steel conduits

Flexible conduits

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Question 17 of 69

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

No separate joints needed

More tappings possible

Easy fault identification

More sub-circuits possible

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Question 18 of 69

18. What is this electrical appliance accessory called?

Flat connector with side entry

Three pin plug

2 Pin plug

Iron connector with direct entry

Question 18 of 69

Question 19 of 69

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

Run cable through ceiling holes

Permanent connection

Connection for transportable appliances

Concealed wiring

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Question 20 of 69

20. How are ceiling roses classified?

Holding accessories

Safety accessories

General accessories

Outlet accessories

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Question 21 of 69

21. What is the advantage of concealed wiring?

Easy to maintain

Protection against moisture

High insulation resistance

Less voltage drop

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Question 22 of 69

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

Distribution box

Junction box

Socket connection

Switch box

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Question 23 of 69

23. What is this wiring method called?

Joint box method

Looping back method

Loop in method using 3 plate ceiling rose

Loop in method using 2 plate ceiling rose

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Question 24 of 69

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

75 clips

50 clips

150 clips

100 clips

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Question 25 of 69

25. Why is copper fuse wire tin-coated?

Increase mechanical strength

Withstand high temperature

Prevent copper oxidation

Increase fusing factor

Question 25 of 69

Question 26 of 69

26. What does MCB stand for?

Maximum Current Breaker

Minute Control Breaker

Miniature Circuit Breaker

Minimum Current Breaker

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Question 27 of 69

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

9mm - 20mm

11mm - 27mm

15mm - 30mm

13mm - 25mm

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Question 28 of 69

28. Which electrical accessory belongs to general classification?

Fuse

Ceiling roses

Intermediate switch

Pendent lamp holder

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Question 29 of 69

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

'G' series MCBs

'DC' series MCBs

'L' series MCBs

'L' and 'G' series MCBs

Question 29 of 69

Question 30 of 69

30. What does AWG stand for?

American Wire Guard

American Wire Gauge

American Wire Grade

American Wire Group

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Question 31 of 69

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

Over load protection

Over voltage protection

Short circuit protection

Earth leakage protection

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Question 32 of 69

32. What does this symbol indicate?

Exhaust fan

Table fan

Ceiling fan

Bracket fan

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Question 33 of 69

33. What is the fusing factor for rewireable fuse?

2.5

1.1

2.1

1.4

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Question 34 of 69

34. What is this diagram called?

Installation plan

Wiring diagram

Schematic diagram

Layout plan

Question 34 of 69

Question 35 of 69

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

Time factor

Cut-off factor

Fusing current

Fusing factor

Question 35 of 69

Question 36 of 69

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

Paper

Poly vinyl chloride

Nylon

Cement

Question 36 of 69

Question 37 of 69

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

Bracket holder

Angle holder

Edison screw holder

Goliath screw holder

Question 37 of 69

Question 38 of 69

38. What is the application of DC series MCB?

AC motor

Air conditioners

Locomotives

DC motor

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Question 39 of 69

39. What is this lighting circuit called?

Corridor lighting wiring

Tunnel lighting wiring

Staircase lighting wiring

Godown lighting wiring

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Question 40 of 69

40. What is this accessory symbol called?

One way switch two poles

Multi position switch single pole

Bell push switch

Two way switch

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Question 41 of 69

41. What type of relay is this?

Latching relay

Electromagnetic relay

Dry reed relay

Impulse relay

Question 41 of 69

Question 42 of 69

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

Avoid leakage current in home theatre wiring

Control temperature in home theatre wiring

Avoid electrical interference in audio/video system

Reduce power consumption in power supplies

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Question 43 of 69

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

Miniature Circuit Breaker (MCB)

Moulded Case Circuit Breaker (MCCB)

Residual Current Circuit Breaker (RCCB)

Earth Leakage Circuit Breaker (ELCB)

Question 43 of 69

Question 44 of 69

44. Which category does fuse accessories belong to?

Safety accessories

Outlet accessories

Controlling accessories

Holding accessories

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Question 45 of 69

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

1.1

1.0

1.4

1.7

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Question 46 of 69

46. What is the name of this electrical accessory?

Angle swivel lamp holder

Goliath Edison screw lamp holder

Edison screw type holder

Bracket holder

Question 46 of 69

Question 47 of 69

47. What is this BIS symbol called?

Intermediate switch

Multi-position switch

Two way switch

Lamp

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Question 48 of 69

48. Which equipment uses 'L' series MCB?

General lighting

Motors

Halogen lamp

Air conditioner

Question 48 of 69

Question 49 of 69

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

4

1

2

3

Question 49 of 69

Question 50 of 69

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

3

4

2

5

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Question 51 of 69

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

Show schematic connections

Quickly inform circuit purpose

Show physical position of accessories

Estimate various accessories

Question 51 of 69

Question 52 of 69

52. What is this wiring circuit application?

Two lamps controlled by one switch

Two lamps controlled by two switches

Two lamps dim operation only

One lamp bright and two lamps dim operation

Question 52 of 69

Question 53 of 69

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

Easy load balancing

Easy fault finding with many fuses

Offers minimum voltage drop

Constant voltage distribution

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Question 54 of 69

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

16.66 Ω

1666 Ω

16666 Ω

166 Ω

Question 54 of 69

Question 55 of 69

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

Electromagnetic relay

Impulse relay

Mercury wetted contact relay

Dry reed relay

Question 55 of 69

Question 56 of 69

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

Two way switch

One way switch

Multiposition switch

Intermediate switch

Question 56 of 69

Question 57 of 69

57. What is the purpose of an ELCB?

Monitors residual current

Protects from overload

Protects from short circuit

Detects circuit faults

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Question 58 of 69

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

Pull switch

Fuse

Link

Plug and socket

Question 58 of 69

Question 59 of 69

59. Which wiring is suitable for temporary installations?

PVC conduit wiring

Metal conduit wiring

Concealed wiring

Cleat wiring

Question 59 of 69

Question 60 of 69

60. What type of fuse is this?

Ferrule contact cartridge fuse

Diazed screw type cartridge fuse

Knife edge cartridge fuse

High rupturing capacity fuse

Question 60 of 69

Question 61 of 69

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

Avoid loose connections

Prevent excessive cap cover pressure

Reduce the strain from the terminals of accessories

Increase mechanical strength

Question 61 of 69

Question 62 of 69

62. How are conduit pipes specified?

Outer diameter in mm

Length in metre

Wall thickness in mm

Inner diameter in mm

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Question 63 of 69

63. What does ECC stand for?

Earth Continuity Conductor

Earth Conductor Continuity

Earth Carrying Conductor

Earth Continuity Cable

Question 63 of 69

Question 64 of 69

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

Maintain stable voltage

Prevent line overloading

Prevent electric shock

Protect from leakage current

Question 64 of 69

Question 65 of 69

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

Voltage drop increases

Cable damage due to heat

Load current increases

Voltage drop decreases

Question 65 of 69

Question 66 of 69

66. What type of wiring is this?

CTS wiring

Cleat wiring

PVC conduit wiring

PVC casing and capping wiring

Question 66 of 69

Question 67 of 69

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

Godown wiring

Multi-storied building

Domestic wiring

Industrial wiring

Question 67 of 69

Question 68 of 69

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

Core

Pair

Quad

Layer

Question 68 of 69

Question 69 of 69

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

Decreases

Infinity

Increases

Remains same

Question 69 of 69