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24 IEC First Year, Second Semester mid term 1.One, two, or three circuit track lighting is available.ANS True 2.Each 10' section of lighting track is rated for 15 amps at 125 volts. The circuit supplying this track can be connected to a - amp, single pole breaker in a 120/240-volt, 1 phase, 3 wire panel.ANS 15 amp only.
3.When dimming fluorescent lighting, can mixed ballasts or lamps from dif- ferent manufacturers be controlled from the same dimmer?
ANS NOO!
4.What is the rated wattage of the most commonly used dimmer that fits in a single-gang box in a residence?ANS 600 Watts 5.Generally, to dim fluorescent lamps, special and are need- ed.ANS Ballasts and dimmer switches.
6.Electronic dimmers are used in some installations. 1 / 3
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24 ANS Trueeeee 7.The maximum current carrying capacity of a 600 watt, 120-volt dimmer is amps.ANS 5 amps 8.The maximum current carrying capacity of a 2000 watt, 120 volt dimmer is amps.ANS 16.7 amps 9.the maximum current carrying capacity of a 1,000 watt, 120 volt dimmer is amps.ANS 8.3 amps 10.The only dimmer sizes available are ANS 600, 1000, 2000 watt 11.The minimum rating of a dimmer used to control 120-volt track lighting is watts. The track has twelve luminaires installed. Each luminaire has a lamp with a rating of 120 watts at 120 volts.ANS 1500 watts 12.If the aluminum "fins" of a 120-volt, 1000 watt dimmer are broken off, the dimmer can now carry current than its original rating. 2 / 3
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24
ANS LESS CURRENT
13.What is the rule for ground wires in a box fill calculation?ANS 1 X the size of the largest conductor.
14.What is the rule for internal clamps in a box fill calculation?ANS 1 X size of the largest conductor 15.What is the rule for devices in a box fill calculation?ANS 2 X the size of the largest conductor 16.All electrical outlets in residential bedrooms shall be protected by ANS Arc-fault circuit interrupters.
17.As measured along the floor line, make sure that a receptacle is not more than feet from the next receptacle when laying out the wall receptacle locations in a bedroom of a house.ANS 12 feet 18.The supplied to the connected load increases when batteries are connected in series.
ANS VOLTAGE
19.The supplied to the connected load increases when batteries are connected in parallel.
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