Lesson 106 - Applied Math, Ohm's Law, Electrical Symbols, Boxes, and Box Fill Reading Worksheet
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Course
FT 106.
Institution
FT 106.
Lesson 106 - Applied Math, Ohm's Law, Electrical Symbols, Boxes, and Box Fill Reading Worksheet
Legend or notations - correct answer Where will the explanation for non-standard symbols usually be found?
10-32 - correct answer The tapped holes in the back of all the boxes in Figure 107.36 ...
Lesson 106 - Applied Math, Ohm's Law,
Electrical Symbols, Boxes, and Box Fill
Reading Worksheet
Legend or notations - correct answer ✔✔Where will the explanation for non-standard symbols usually
be found?
10-32 - correct answer ✔✔The tapped holes in the back of all the boxes in Figure 107.36 are tapped for
___ grounding screws.
Go up - correct answer ✔✔If the resistance is lowered in a simple circuit, what will the current do?
marked with its cubic-inch volume - correct answer ✔✔When it is ___, a raised plaster cover (often
called a plaster ring or mud ring) is permitted to increase the maximum number of conductors permitted
in an outlet box.
trade size 3/ 8 - correct answer ✔✔Common switch and outlet boxes are available with all the following
size knockouts, except for ___.
6 - correct answer ✔✔Branch-circuit conductors at outlet boxes are required to have at least ___ inches
of free conductor for making splices and connections. The length of conductor is measured from the
point in the box where it emerges from its raceway.
Go down - correct answer ✔✔If the voltage is lowered in a simple circuit, what will the current do?
Switch with pilot lamp - correct answer ✔✔What does the "S p" symbol represent?
inversely - correct answer ✔✔Referring to the Ohm's Law formula I = E ÷ R:
In a DC circuit, the current is directly proportional to the voltage and ___ proportional to the resistance.
, III only - correct answer ✔✔Which of the boxes shown in Figure 107.31 can be "ganged" together to
form a 3-gang box?
III - correct answer ✔✔As shown in Figure 107.31, ___ is referred to as a "brick" box.
3:4 - correct answer ✔✔There are 31 students in a class. Eight (8) students are over 6 feet tall.
Seventeen (17) students are 5'-6" to 6'-0" in height. Six (6) students are under 5'-2". What is the ratio of
the number of students under 5'-2" to the number of students over 6' tall?
6.67 min. - correct answer ✔✔If a pump discharges 600 gallons of water in 2.5 minutes, how long will it
take to discharge 1,600 gallons of water?
60 - correct answer ✔✔A blueprint is drawn to a scale of 1 inch = 10 feet. The building width measures 6
inches on the blueprint. The building is ___ wide.
33.33 - correct answer ✔✔You need to final-tighten the mechanical lugs that connect your feeder
conductors to a 600-amp safety switch. You are going to use a torque wrench that is calibrated in
pound- feet (lb- ft.). The instruction label in the switch reads "400 lb- in." To satisfy the manufacturer's
specifications, you will set your torque wrench at ___ lb- ft.
6 hours 15 minutes - correct answer ✔✔You timed your helper and it took him 2 1/ 2 hours to dig a
trench 20 feet long. If you get another helper who will work at the same pace, how much time will it
take both of them to dig an additional 100 feet?
26 days - correct answer ✔✔If four electricians can install 200 feet of 2-inch conduit in two days, how
long will it take them to install 2,600 feet of the same conduit?
36 - correct answer ✔✔An electrician was making $13.50 per hour and worked 40 hours per week. He
had bought a new truck and needed to make more money but was turned down for a raise. He got mad
and quit and was out of work for two weeks. He is now working at a new job that pays $14.25 per hour.
Working 40 hours per week at the new job, how many weeks will he have to work to make up for the
pay he lost while out of work?
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