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119 IEC (STUDY GUIDE) ACTUAL TEST QUESTIONS
WITH DETAILED VERIFIED ANSWERS &
RATIONALES ALREADY GRADED A.
- PICTURE Refer to Figure 119.105. When correctly connected, the luminaires are connected in with each other. Select one: a. series b. parallel: b. parallel
- PICTURE Refer to Figure 119.105. Schematic Diagram (below) shows the dimmer and the lamps correctly connected. Select one: a. b. c. d. none of these: c.
- PICTURE If you install a 90 watt lamp in each of the luminaires shown in Figure 119.101, you will have to install a dimmer with a rating of at least watts. Select one: a. 600 b. 1, c. 1, d. 1, e. none of these: d. 1,
- PICTURE The luminaires shown in Figure 119.101 are connected to circuit. Select one: a. 2 b. 4: b. 4
- PIC Refer to Figure 119.106. When correctly connected, the dimmer is con- nected in with the luminaires. Select one:
Select one: a. I only b. II only c. both I & II d. neither I nor II: c. both I & II
- Instructions for most dimmers state that they should not be used to control . Select one: a. incandescent lighting b. track lighting c. valence lighting d. receptacle outlets: d. receptacle outlets
- By U.L. Standard 153, portable light tracks must have a cord not less than
feet in length. Select one: a. 3 b. 8 c. 6 d. 5 e. 4: d. 5
- Electronic dimmers are used in some installations. Select one: a. True b. False: a. True
- The supplied to the connected load increases when batteries are connect- ed in series.I. voltage II. current Select one:
c. both I & II d. neither I nor II: a. I only
- Dimmers that can be used to control inductive loads such as low-voltage lighting transformers are rated in. Select one: a. W b. VA: b. VA
- The maximum current-carrying capacity of a 2,000 watt, 120 - volt dimmer is amps. Select one: a. 13. b. 16. c. 20 d. none of these: b. 16.
- One, two, or three circuit lighting track is available. Select one: a. True b. False: a. True
- circuit lighting track will have five metal strips running the length of the track. Three metal strips will be on one side of the track for connection to one or two circuit neutrals and the ground. Two metal strips will be on the opposite side of the track for connection to the two circuit "hot" or ungrounded conductors. Select one: a. Two b. Three: a. Two
- Lighting track permitted to be installed within a zone extending 3 feet (900 mm) horizontally and 8 feet (2.5 m) vertically from the top of the bathtub rim.
a. is b. is not: b. is not
- Track lighting is not permitted to be installed less than above the floor unless it has an open-circuit voltage of less that 30 volts RMS. Select one: a. 7.5 feet (2.3 m) b. 6 feet (1.8 m) c. 6 feet 7 inches (2.0 m) d. 5 feet (1.5 m): d. 5 feet (1.5 m)
- If more than 4 feet of track is needed, at least one additional support must be installed for every extension of feet or less. Select one: a. 6 b. 8
c. 3 d. 4 e. 2: d. 4
- Each 10' section of lighting track is rated for 20 amps at 125 volts. The circuit supplying this track can be connected to a - amp, single-pole breaker in a 120/240-volt, 1Ø, 3-wire panel.I. 15 II. 20 Select one: a. I only b. II only c. either I or II d. neither I nor II: c. either I or II
- A room is to be illuminated with track lighting. Twenty track heads (fixtures) will be installed in the track. A 75 W PAR38 lamp will be installed in each head. The lighting is to be controlled by a dimmer. The smallest dimmer that can be
b. 2, c. 1, d. 1,500: d. 1,
- Lighting track shall be grounded in accordance with Article 250, and the track sections shall be securely coupled to maintain continuity of the throughout. Select one: a. circuitry b. polarization c. grounding d. all of these e. none of these: d. all of these
- A 3-gang switch box is to be constructed using metal device (switch) boxes. The box assembly will contain two three-ways and one dimmer switch. External connectors will be used on the AC cables entering the box. The AC does NOT
contain a ground. Three 14 - 3 cables plus one 14 - 2 enter the box assembly. The shallowest boxes you can use are " deep. Select one: a. 2 3/ b. 2 c. 2 1/ d. 3 1/ e. 2 1/4: c. 2 1/
- Some types of dimmers require that a neutral (grounded conductor) be connected to the switch in addition to a "hot" and a "switch leg." Select one: a. True b. False: a. True
- A 120-volt, 1,000 watt dimmer is rated to carry a maximum of amps.
c. 11. d. 6. e. 14.4: b. 8.
- A 120-volt, watt dimmer is the smallest that can be installed to control a lighting load that consists of 13 luminaires. Each luminaire has a 135 watt lamp installed. Select one: a. 1, b. 1, c. 600 d. 1, e. none of these is large enough: e. none of these is large enough
- When the aluminum "fins" on a dimmer are broken off (removed), there will be no effect on the capacity or rating of the dimmer switch.
Select one: a. True b. False: b. False
- The purpose of the "fins" on a dimmer is to. Select one: a. hold the special cover that is provided with this switch b. cover the two-gang box required for these larger switches c. ensure proper alignment of multi-switch installations d. sink away heat generated within the switch: d. sink away heat generated within the switch
- An dimmer is a type used in some installations. Select one: a. electronic b. autotransformer c. both a and b
ungrounded conductor is connected before connecting the switch leg Select one: a. I only b. II only c. either I or II d. neither I nor II: d. neither I nor II
- PIC The dimmer shown in Figure 119.104 is connected in with the lumi- naires (lighting fixtures). Select one: a. series b. parallel: a. series
- When laying out the wall receptacle locations in a bedroom in a house, a receptacle is required to be installed in a wall space that is 1'-10" wide. Select one:
a. True b. False: b. False
- Refer to Figure 119.103 for the plan view of a bedroom in a new house. Any receptacles installed in spaces1 ,2 , 3, 4 or 5 must be protected by an arc-fault circuit interrupter. Select one: a. True b. False: a. True
- Any receptacles installed in spaces 7,8 ,9 or 10 must be AFCI protected. Refer to Figure 119.103 for the plan view of a bedroom in a new house. Select one: a. True b. False: a. True
- Refer to Figure 119.103 for the plan view of a bedroom in a new house. A
