INDUSTRIAL MODULE C

ELECTRICAL EQUIPMENT

QUIZ PART 2

Page 1 of 20

1. The identified conductor of a single phase ac circuit is what colour?

[Get Hints]

A. Green

B.Green with yellow stripe

C.Green or yellow

D.White or grey

2. An automobile manufacturing plant will be installing several 120v HID lighting circuits, what is the maximum over current device you can use for this installation?

[Get Hints]

A.20A

B.40A

C.15A

D.50A

3. A high voltage supply feeds a neon tube, what is the maximum length of high voltage cable from the high voltage supply terminals to the first neon tube if installed in a metal raceway?

[Get Hints]

A.12m

B.4m

C.6m

D.2m

4. What can happen to aluminum armoured cables that are embedded in concrete that contains chloride additives?

[Get Hints]

A.Galvanic corrosion of the aluminum

B.Increase resistance of conductors

C.Corrosion of copper conductors

D.Increases 2nd harmonics on the cable

5. When replacing a meter device that uses a current transformer with a 10:1 ratio what should be done on the secondary of the current transformer?

[Get Hints]

A.Short the secondary of the CT

B.Put secondary to ground

C.Replace the current transformer with a new one

D.Put a load resistor between the secondary terminals

Page 2 of 20

6. A voltmeter is reading 120v, what is the peak voltage and peak to peak voltage?

[Get Hints]

A.120v, 240v

B.169v, 339v

C.220v, 234v

D. 347v, 600v

7. You have installed a 600v, 3 phase, 50 HP motor with a service factor of 1.15, what value will you set the overloads at?

[Get Hints]

A.65A

B.50A

C.60A

D.70A

8. When would a 2 step 3 speed wound rotor motor be at top speed?

[Get Hints]

A. When the first bank of resistors are added into the circuit

B. When all the resistors are added into the circuit

C.When the controller adds a higher voltage to the rotor

D.When the resistors banks are totally bypassed

9. What is the purpose of bumping a motor?

[Get Hints]

A.Determine if the motor is rotating in the right direction

B.Verify that the motor has satisfactory insulation resistance

C.To rule out any grounds on the motor conductors

D.To allow for tweaks of the supply voltage

10. What is one application you can use an auxiliary contact off of a motor starter?

[Get Hints]

A.As a seal in contact

B.To cut power to the motor starter coil

C.To sense motor inrush current and send it to protective relaying

D.Allow the motor contactor to pick up

Page 3 of 20

11. What are the purpose of blow out coils?

[Get Hints]

A.Blow out coils rupture on an over pressurized condition in a junction box

B.As the name implies blow open on an over current condition

C.Used to disconnect an electric circuit

D.Used to extinguish an electric arc

12. What is the relationship between slip and torque for a 3 phase SCIM at operating speed?

[Get Hints]

A.Inversely proportional

B.Directly proportional

C.No significant change

D.Slip goes up, torque stays the same

13. Loose laminations on a contactor would cause what to happen?

[Get Hints]

A.Short circuit

B.Excessive humming

C.Fluctuating voltage supply

D.Excessive current in the circuit

14. You are asked to look up the tightening torque in Newton/meters for a wire binding screw that will have a #12AWG installed under it, what table would you refer to?

[Get Hints]

A.Table D4

B.Table 44

C.Table 10A

D.Table D6

15. In a capacitor start/run motor where is the centrifugal switch located?

[Get Hints]

A.On the start winding

B. At the power supply

C.On the shaft of the motor

D.On the motor casing

Page 4 of 20

16. In a capacitor start/run motor the centrifugal switch operates at 75% rated speed and disconnects which device from the motor circuit?

[Get Hints]

A.Run capacitor

B.Start capacitor

C.Run and start capacitor

D.Run capacitor and run winding

17. What type of DC motor should never be started without load?

[Get Hints]

A.Series

B.Compound

C.Shunt

D.SCIM

18. What type of DC motor would require you to install a field loss relay?

[Get Hints]

A.Series

B.Compound

C.Shunt

D.SCIM

19. What operating characteristics will a DC start/run capacitor motor have?

[Get Hints]

A.High starting torque, good running torque

B.Low starting torque, low running current

C.High starting torque, low power factor

D.Low starting torque and dynamic braking

20. A 3 phase, 600v, 10hp motor has overcurrent in the form of a circuit breaker and overload protection as per the CEC, what is the arrangement of the devices located in a MCC cell?

[Get Hints]

A.Arrangement does not matter so long as you have both

B.Overloads first, Circuit breaker second

C.Circuit breaker first, then overloads closest to the motor

D.Circuit breaker in parallel with overloads

Page 5 of 20

21. An electrician is determining what size of overload to use for a motor that conforms with CSA C22.2 No 77 and has the markings of "ZP" and "TP" on it?

[Get Hints]

A.4A

B.7.36A

C.5A

D.No overload is needed for this motor

22. what is the largest conductor that can be fastened under a wire binding screw terminal?

[Get Hints]

A.8 awg

B.10 awg

C.12 awg

D.14 awg

23. How many duplex receptacles at a minimum are needed in a utility room?

[Get Hints]

A.2

B.3

C.0

D.1

24. On taking possession of a new home it is observed that there is only one duplex receptacle installed in the unfinished basement, is this acceptable?

[Get Hints]

A.Yes, at least one is required

B.No there should be a minimum 3 receptacles installed

C.Only if the owner will finish the basement themselves

D.None of the above

25. In a dwelling unit, a free standing electric range has a calculated demand of 50A what type of CSA receptacle should supply this range?

[Get Hints]

A.L8-20R As shown in Diagram 23

B.5-20R As shown in Appendix R

C.14-50R As shown in Diagram 1

D.5-50R

Page 6 of 20

26. Direct buried conductors should be installed so they run?

[Get Hints]

A.Adjacent to each other but can cross each other anytime

B.Adjacent to each other and do not cross

C.Can criss cross anytime as long as there is a bed of screened sand

D.Can be ty-wrapped together and crossed with other cables

27. A motorized valve that can operate fully open or closed requires how many contactors and overloads?

[Get Hints]

A.1 contactor and set of overloads

B.2 contactors and 2 sets of overloads for fwd and rev

C.2 contactors and 1 set of overloads

D.3 contactors and 2 sets of overloads

28. When a magnetic instantaneous trip circuit breaker is used for an AC motor branch circuit protection, the breaker maximum setting will be?

[Get Hints]

A.1300% FLC or 215% locked rotor current

B.1200% FLC or 200% locked rotor current

C.125% FLC

D.65% LRC

29. What information do you need to calculate speed regulation of a motor?

[Get Hints]

A.How much the speed varies between no load and full load

B.How much the voltage varies between no load and full load

C.How much power is consumed by the motor when on and off

D.How much speed varies between ½ load and full load

30. A 600v, 60hz motor rotates at 2200 rpm at no load and 2155 rpm at full load, what is the speed regulation of this motor?

[Get Hints]

A.3.59%

B.2.09%

C.7.22%

D.3.25%

Page 7 of 20

31. If a DC shunt motor was to lose its shunt field what would happen to the motor?

[Get Hints]

A.Motor speed would slightly decrease

B.Motor would maintain speed

C. Motor run away condition

D.Motor would stop

32. What is the maximum installation height for a stove receptacle?

[Get Hints]

A.150mm

B.130mm

C.120mm

D.1m

33. What can be used to reduce chatter or bounce of ac magnetic switches?

[Get Hints]

A.Shading coil

B.Diode

C.Resistor

D.Interpole

34. A cartridge fuse is marked with the letter “P”, what does this mean?

[Get Hints]

A.Practical melting point

B.Medium melting point

C.Low melting point

D.High melting point

35. ENT is best described by which of the following below?

[Get Hints]

A.Flex conduit

B.Rigid metal conduit

C.Rigid non-metallic tubing

D.Teck 90

Page 8 of 20

36. A street light is mounted in a new subdivision, it is to be controlled by a photocell, how should the photocell be installed?

[Get Hints]

A.Under the light facing down

B.Above the light facing down

C.Above the light facing up and away from other light sources

D.Above the light facing up and facing other light sources

37. What is the maximum installation temperature for rigid PVC conduit?

[Get Hints]

A.200C

B.75 C

C.125C

D.30C

38. With what two pieces of information can you select a NEMA size contactor?

[Get Hints]

A. FLA and Service factor

B.Service factor and voltage

C.FLA and motor frame design

D.Voltage and horsepower

39. In what application is it most likely to find a capacitor start capacitor run motor?

[Get Hints]

A.In a cordless drill

B.A hoisting device

C.Fan assembly

D. Traction motor

40. EMT shall be fastened within what distance when leaving an electrical box?

[Get Hints]

A.2m

B.2.5m

C.3m

D.1m

Page 9 of 20

41. When installing ENT what also needs to be installed within it?

[Get Hints]

A.Separate bonding conductor

B.Thermal compound

C.Mechanical protection

D.Erickson coupling

42. What is the max spacing between supports for Electrical Non-metallic tubing?

[Get Hints]

A.2m

B.1.5m

C.1250mm

D.1m

43. What is the maximum size copper conductor that can be installed in a wireway?

[Get Hints]

A.4 awg

B.2/0 awg

C.750kcmil

D.500kcmil

44. If a cable tray doesn’t have good electrical contact with the grounded structural metal frame of a building, the cable tray must be bonded at intervals not exceeding?

[Get Hints]

A.20m

B.15m

C.5m

D.10m

45. What is to be done with unused openings in electrical boxes?

[Get Hints]

A.They can be left open if unused and box fill is less than 40%

B.Place a piece of electrical tape over them

C.Closed by means of plugs or plates

D.Left open to aid in cooling

Page 10 of 20

46. What is the max spacing of conduit supports for 41 trade size rigid metal conduit?

[Get Hints]

A.30m

B.2m

C.3m

D.5m

47. What is the maximum weight of a luminaire that can be supported by a ceiling outlet box attached directly to the building structure?

[Get Hints]

A.13 kg

B.27 kg

C.15 kg

D.23 kg

48. What condition would cause the inside glass of a plug fuse to become blackened?

[Get Hints]

A.Old fuse but still usable

B.This is a normal condition with plug fuses

C.Fault current was interrupted , this fuse needs to be replaced

D.This fuse was installed prior to 1992 and should be repaired

49. Where can armoured cable work rules be found in the CEC?

[Get Hints]

A.12-100

B.12-500

C.12-700

D.12-600

50. Underfloor raceways can’t be used where?

[Get Hints]

A.Exposed to corrosive vapours

B.In storage battery rooms

C.In commercial garages

D.All of the above

Page 11 of 20

51. When a wireway comes to a dead end it shall be?

[Get Hints]

A.Left open

B.Spray painted orange

C.Closed by appropriate fittings

D.Have a streamer attached to its dead end

52. When wireways are installed they must be supported every?

[Get Hints]

A.2 m

B.1.5m

C.1m

D.3m

53. A transformer must have a nameplate with which of the following markings?

[Get Hints]

A.Manufacturers name

B.Rating in KVA

C.Frequency in hz

D.All of the above

54. When luminaires are installed in a film vault, its switch must be located where?

[Get Hints]

A.Inside the film vault

B.Within 2m of the floor inside the film vault

C.Outside the film vault

D. Within the film vault but within 1m of the entrance

55. An unfinished basement is 150㎡, how many lights does it require?

[Get Hints]

A.5

B.1

C.4

D.2

Page 12 of 20

56. How is the rated primary current of a welder determined when using information off the nameplate?

[Get Hints]

A.(KVA x 1000)/ Rated primary voltage

B.(KVA/1000)/ Rated secondary current

C.KVA x 1.73

D.Rated primary current x primary voltage

57. Sauna heaters must be controlled by a timed cut off switch with a maximum time setting of?

[Get Hints]

A.20min

B.24 hrs

C.30min

D.1 hr

58. What is the minimum separation between conductors of a community antenna distribution circuit and lightning conductors?

[Get Hints]

A.2m

B.1m

C.4cm

D.3mm

59. An insulated communication conductor can be installed over a pool if it has how much vertical clearance?

[Get Hints]

A.3m

B.2m

C.10m

D.5m

60. Receptacles located between 1.5 - 3m of the inside of a pool must be?

[Get Hints]

A.Duplex receptacle

B.Switched duplex receptacle

C.Be protected by a GFCI class “A type”

D. Be protected by a GFCI class “P type”

Page 13 of 20

61. What is the minimum distance a communication jack can be installed to the inside wall of a pool?

[Get Hints]

A.2m

B.30mm

C.3m

D.10m

62. What does a ground counterpoise in an airport series lighting system protect cables against?

[Get Hints]

A.Corrosion

B.Lightning strikes

C.Attenuation

D.Ground loops

63. Airport series lighting systems must be installed with?

[Get Hints]

A.Switched neutral conductor

B.Ground counterpoise

C.Min 6AWG for all ungrounded conductors

D.GFCI

64. Can temporary electrical installations be interconnected with permanent electrical installations?

[Get Hints]

A.Yes as long as they are safe

B.Yes as long as the temporary installation is taken down within 120 days

C.No, they can’t be connected together except if your manager approves

D.No they can’t be connected together except if you have obtained special permission

65. Receptacles used to supply shore power to boats shall?

[Get Hints]

A.Made of corrosion resistant materials

B.Installed above max normal water level

C.Both A and B

D.Receptacles can’t be used to supply shore power to boats

Page 14 of 20

66. Electrical supplies feeding vehicle charging systems must not exceed what AC voltage?

[Get Hints]

A.750

B.240

C.700

D.300

67. An electrician is installing lights in a dwelling, which circuit conductor should they connect to the light switch?

[Get Hints]

A.Identified conductor

B.Neutral conductor

C.Ungrounded conductor

D.Grounded conductor

68. Which raceway can be bent easily without the use of tools?

[Get Hints]

A.EMT

B.Flexible metal conduit

C.Rigid metal conduit

D.All of the above

69. What other device can be installed on a branch circuit that supplies a refrigerator?

[Get Hints]

A.Stove

B.Microwave

C.No other devices

D.Electric clock

70. How many branch circuits must be supplied to feed receptacles in a laundry room or in a space where complete plumbing is installed for a washing machine?

[Get Hints]

A.1

B.2

C.3

D.5

Page 15 of 20

71. Which of the devices below can be installed on the same branch circuit that feeds a microwave in a home?

[Get Hints]

A.Baseboard heaters

B.Recessed clock

C.Dishwasher

D.No other devices

72. What is the minimum number of duplex receptacles that must be installed for every car space in a garage of a single dwelling?

[Get Hints]

A.2

B.3

C.1

D.4

73. If a garage has a cord connected overhead garage door opener the receptacle feeding it must be located within?

[Get Hints]

A.2m

B.3m

C.0.8m

D.1m

74. Conductors #8AWG or larger that extend out of raceways must be protected by which means?

[Get Hints]

A.Insulating material fastened securely in place that separates conductors from raceway and provides adequate mechanical protection

B.Insulated type bushing

C.Using equipment that has a smoothly rounded throat

D.All of the above

75. When connecting a bonding conductor to equipment it is permissible to use a solder connection?

[Get Hints]

A.True

B.False

Page 16 of 20

76. When a induction motor is first started what type of current does it draw?

[Get Hints]

A.Inrush current

B.Full load current

C.Rated load current

D.Typically 125% full load current

77. When meggering a conductor to ground what are you testing?

[Get Hints]

A.Current

B.Voltage

C.Insulation integrity

D.Insulation capacitance

78. What unit is used for conductance?

[Get Hints]

A.Ohm

B.Amp

C.Mho

D.weber

79. When oil is used in a power transformer it acts as?

[Get Hints]

A.Insulating medium

B.Coolant

C.Lubrication

D. Both A and B

80. Which statement below is true of a single phase motor?

[Get Hints]

A.Single phase ac motors are self starting

B.Single phase ac motors can generate a rotating magnetic field

C.Single phase ac motors are not self starting

D.Single phase ac motors use brushes to distribute electricity

Page 17 of 20

81. What is the efficiency of a 8hp motor that draws 47A at 240v?

[Get Hints]

A.99%

B.100%

C.62%

D.53%

82. The secondary load of a current transformer is typically called?

[Get Hints]

A.alternative load

B.Effective dose

C.Burden

D.None of the above

83. The twisting effect produced by a turning motor shaft can be referred to as?

[Get Hints]

A.Universal effect

B.Potential energy

C.Centrifugal force

D.Torque

84. The SI unit of electric charge is?

[Get Hints]

A.Potential difference

B.Voltage

C.Amp

D.Coulomb

85. How many poles does a 60hz ac generator have that is spinning at 3600rpm?

[Get Hints]

A.2

B.6

C.3

D.4

Page 18 of 20

86. According to Ohm’s law what is the relationship between voltage and current?

[Get Hints]

A.Current is inversely proportional to voltage

B.Current is directly proportional to voltage and resistance

C.Current is directly proportional to voltage

D.None of the above

87. A 60hz motor is connected to a 50 hz system, what effect will it have on the speed of the motor?

[Get Hints]

A.No effect on speed

B.Speed will decrease

C.Speed will increase

D.Speed will double

88. GFCI can detect leakage current as low as?

[Get Hints]

A.5ma

B.20ma

C.100ma

D.50ma

89. What type of motors are widely used in industrial plants?

[Get Hints]

A.Induction motors

B.DC motors

C.Synchronous motors

D.Stepper motors

90. Magnetic flux is measure in what units?

[Get Hints]

A.Weber

B.Watts

C.Amps

D.Ohms

Page 19 of 20

91. Power factor is the ratio between which of the following?

[Get Hints]

A.Watts and VA

B.Vars and Watts

C.Vars and VA

D.Watts and Vars

92. 1 Watt is equal to which of the following?

[Get Hints]

A.10 joules per second

B.1 joule per second

C.500 webers per second

D.20 webers per minute

93. In a class 1 circuit, where should the over current device be installed?

[Get Hints]

A.At the point of supply

B.After the fuses

C.Upstream of the supply

D.At any point in the circuit

94. A class 2 power supply unit will bear which of the following permanent markings?

[Get Hints]

A.Installation date and time

B.Class of supply and installation date

C.Class of supply and electrical rating

D.Electrical rating and installers initial

95. What is the minimum horizontal separation between buried class 2 circuits and other underground systems?

[Get Hints]

A.250cm

B.1m

C.300mm

D.200mm

Page 20 of 20

96. When using concrete slabs as mechanical protection for an underground service installation, what is the minimum thickness of slab?

[Get Hints]

A.38mm

B.45mm

C.50mm

D.100cm

97. A junction box must be accessible with a minimum vertical clearance of how much?

[Get Hints]

A.900cm

B.900mm

C.1m

D.250mm

98. Where can the definition of “low voltage release” and “low voltage protection” be found in the CEC?

[Get Hints]

A.Section 2

B.Section 0

C.Preface

D.Appendix B

INDUSTRIAL MODULE C

ELECTRICAL EQUIPMENT

QUIZ PART 2

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D Page

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INDUSTRIAL MODULE C

ELECTRICAL EQUIPMENT

QUIZ PART 2

Back to Module C Quiz

Go to Module D Page

Take Module D Quiz

Back to Module C Quiz

Go to ModuleD Page

Take ModuleD Quiz

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Take Module D Quiz

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D Page

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D Quiz