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NCII EIM reviewer

1. INTRUCTIONS Read the direction carefully. DO NOT WRITE ANYTHING ON THE TEST BOOKLET. Write your answers on the answer sheet provided. You may use the back page on your answer sheet for scratch work. You have 30 minutes to complete this test. Choose the correct or the best answer and encircle only the letter that corresponds to your choice on the sheet answer provided.

2. EXAMPLE 1. If the potential across a circuit is 40 volts and the current is 5 amperes, what is the resistance? A. 10 ohms B. 8 ohms C. 6 ohms D. 4 ohms The correct answer is 8 ohms so encircle the letter “B” on the answer sheet provided.

3. EXAMPLE 2. You use a bump cap to protect one’s head from – A. falling objects B. head-on collision C. accidental tripping D. hitting stationary objects while working The correct answer is falling objects, so encircle the letter “A” on the answer sheet provided. IMPORTANT: DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO.

4. What should you do first when you arrive to troubleshoot a defective machine? A . Open the controller enclosure and make a visual check B. Press the Start pushbutton switch C. Press the over load relay reset button D. Talk and inquire from the operator of the machine

5. D. Talk and inquire from the operator of the machine

6. Noisy operation of a motor is caused by: A . Too much lubrication B. Defective controller C. Two line are open D. Rotor rubbing the stator

7. D. Rotor rubbing the stator

8. As a safety measure, it is best not to use water to extinguish electrical equipment under fire A. Will turn to steam B. Will not put out the fire C. May damage the equipment D. May transmit shock to the user

9. D. May transmit shock to the user

10. What rating shall have a feeder conductor in relation to its protective device when used for general purpose? A . No relation at all B. Lower than protective device C. Equal or greater than Protection Rating D. All of the above

11. C. Equal or greater than Protection Rating

12. Static capacitor are used to improve the power factor because they A . Are not variable B. Are almost lost free C. Can charge electricity D. Provide continuous change of power factor

13. D. Provide continuous change of power factor

14. The actual power consumed in electrical system is expressed in A . Kilovar ( kVar ) B. Kilowatt (kW) C. Power factor (PF) D. Kilowatt-ampere ( kWA

15. B. Kilowatt (kW)

16. One of the objectives of preventive maintenance is A . To evaluate the production B. To prolong the life of the personnel C. To keep the machines in good condition D. To avoid normally function of the machine

17. C. To keep the machines in good condition

18. Personal Protective Equipment (PPE) helps A . To prevent accident B. To reduce injuries C. Eliminate hazards D. A and c

19. D. A and c

20. The most important reason for not fusing the neutral in a 120/240 volt, 3-wire system is A . The additional fuse protection is unnecessary B. The increased cost of 3-fuse outlet is important C. The blowing of neutral fuse may produce serious voltage unbalance in the circuit D. A neutral fuse increases the hazard of shock

21. C. The blowing of neutral fuse may produce serious voltage unbalance in the circuit

22. What is the practical unit of electrical energy? A . Watt B. Power C. kWHr D. None of these

23. C. kWHr

24. The main reason why blown fuse should no be bridged temporarily by a copper wire is because- A . The wire may be disrupted violently when short circuit occurs B. The circuit may not be protected adequately against overload C. The wire will maintain an arc when it blows D. There is danger of electric shock by coming in contact with the wire

25. B. The circuit may not be protected adequately against overload

26. What device is user for testing an armature for short-circuited coils? A . Ohmmeter B. Growler C. Test lamp D. Megger

27. B. Growler

28. What is device designed to open a current carrying circuit without injury to itself under abnormal conditions? – A . Contactor B. Circuit breaker C. Magnetic switch D. Ground relay

29. B. Circuit breaker

30. A device used to improve sharp burns or rough edges is a A . Bender B. Reamer C. Hickey D. Threader

31. B. Reamer

32. One identifying feature of a squirrel-cage induction motor is that it has no- A . Winding on the stationary part B. Commutator or slip rings C. Air gap D. Iron core in the rotating part

33. B. Commutator or slip rings

34. The most important reason for using friction tape over a splice to A . Prevent damage to rubber tape B. Increase the insulation resistance C. Make the splice as small as possible D. Prevent the wire ends from separating should the wire be pulled

35. B. Increase the insulation resistance

36. An electrician has been assigned to a certain job and has been told that it is essential that it be finished by a certain time. If after working diligently for some time he realizes that he cannot finish the job in time, he should A . Notify his foreman B. Continue working and get as much done as possible C. Skip what he considers minor parts of the job D. Take it easy since the job cannot be done in time

37. A . Notify his foreman

38. Metal cabinets used for lighting circuits are grounded to- A . Eliminate electrolysis B. Assure that fuse in defective circuit will blow C. Reduce the shock hazard D. Simplify wiring

39. C. Reduce the shock hazard

40. How many marking should a rigid non-metallic conduit have? A. 1 B. 2 C. 3 D. 4

41. D. 4

42. What type of switch used to control one lamp from two locations? A . Toggle switch B. Three-way switch C. Single-pole switch D. Triplex switch

43. B. Three-way switch

44. 1.When the circuit breaker is always tripping, most likely – A. there is an overloading B. the supply lines are open C. there is an over current D. The load is removed

45. A. there is an overloading

46. 2. A capacitor used to operate the Capacitor Start Motor is a/ an – A. Electrolytic Capacitor B. Micro Farad Capacitor C. Oil Filled Capacitor C. Oil Filled Capacitor

47. A. Electrolytic Capacitor

48. 3. The reason for grounding the frame of a portable electric hand tool is to A. prevent the frame of the tool from becoming alive-to-ground B. prevent overheating of the tool C. reduce electric shock   D . prevent short electrical circuit

49. C. reduce electric shock

50. 4. What device/s is/are used to measure line current of 200 amperes and above? A. Current oil B. Current meter C. Current transformer D. All of the above

51. B. Current meter

52. 5. A utility company will not connect electrical service to a building unless the owner shows A. an electrical lay-out/drawing B. the cost of the electrical installation C. a certificate of approved electrical inspection D. the person who made the electrical installation

53. C. a certificate of approved electrical inspection

54. 6. Connecting the metal frame of frames of equipment-to-ground is called? A. system grounding B isolated grounding C. lightning grounding D. equipment grounding

55. D. equipment grounding

56. 7. what must be the primary concern of all personnel involved in the maintenance of the electrical system? A. Safety B. Previous maintenance C. Maintenance management D. breakdown maintenance

57. A. Safety

58. 8. What is the trouble when the motor expels lubricant? A. Defective bearing B. Rotor hub C. Misalignment D. Mechanical nose

59. A. Defective bearing

60. 9. The direction of a split-phase motor can be reversed by interchanging the connection of the supply of ? A. either main or starting winding B. Both main and starting winding C. rotor winding D. none of the above

61. A. either main or starting winding

62. 10. A 150W bulb is connected in series with a room heater of 2000W. what will happen if the bulb is replaced by a 200W bulb? A. glows brighter B. becomes darker C. nothing will change D. The load is removed

63. B. becomes darker

64. 11. A fuse puller is used in replacing? A. plug fuses B . link fuses C. ribbon fuses D. cartridge fuses

65. D. cartridge fuses

66. 12. For service drop conductor not exceeding 600 volts, the minimum clearance over commercial area and parking lots subjected to truck traffic is? A 2100 mm B. 4600 mm C. 3700mm D. 5500 mm

67. D. 5500 mm

68. 13. A weak link in a circuit whish will break when too much current flows through it is a? A relay B. fuse C. circuit breaker D. control switch

69. B. fuse

70. 14. The overhead service conductor from the last pole of the utility company to the first point of attachment to the building is the? A . service entrance B. service equipment C. service drop D. compound motor

71. C. service drop

72. 15. A motor will not operate on DC is the? A. series motor B. shunt motor C. induction motor D. compound motor

73. C. induction motor

74. 16. The electrician’s tapered reamer is used for? A. reaming the ends of rigid conduit after it is cut B. reaming the treads on coupling C. making holes on panel boxes D. reaming the holes in bushings

75. A. reaming the ends of rigid conduit after it is cut

76. 17. An electrician should always make sure that his tools are kept in good condition because A . a good job can never be the done without perfect tools B. defensive tools may cause accidents or damage C. tools that are in good condition require no care D. there is less possibility of the tools being lost

77. B. defensive tools may cause accidents or damage

78. 18. What is the safety value of insulation on electrical maintenance tools? A . insures the safety of the user B . the insulation provides very little protection C. important only to the new helper D . the insulation should not be used as the only protective measure

79. 19. What is the maximum height of a lighting switch? A . 1.5 meters B . 1.75 meters C. 2.0 meters D . 2.5 meters

80. A . 1.5 meters

81. 20. What is the maximum bending radius applied to ½”, ¾” and 1” conduit? A. 5 inches B. 6 inches C. 4 inches D. 3 inches

82. C. 4 inches