Exam (elaborations)
JATC YEAR 1 FINAL EXAM QUESTIONS & ANSWERS
JATC YEAR 1 FINAL EXAM QUESTIONS & ANSWERS
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JATC YEAR 1 FINAL EXAM QUESTIONS & ANSWERSWhich of the following items should be read first on every lesson? - Answers-
Introductory Information
A competent electrician is one who has ___ , __ , and a positive ___ for his or her trade.
- Answers- skill / knowledge / attitude
The nucleus of what was to become the IBEW was formed in ? in the city of ? . -
Answers- 1890 / St. Louis
The ? Act of 1935 is more commonly referred to as the Wagner Act. - Answers-
National Labor Relations
Worker ? on the job is a major reason that job tasks cannot be performed in a timely
manner. - Answers- Absenteeism
? and ? are critically important to jobsite safety.
a. - Answers- Awareness / common sense
The term ? is used to identify the reference point or angle. - Answers- theta
The side next to the reference angle is called the ? side. - Answers- Adjacent
Since the ratios for sides of triangles are the same, when the angles are the same, ?
have been developed which show these ratios for every angle encountered in a triangle.
- Answers- trigonometric tables
The sine of θ is equal to the ? divided by the ? . - Answers- opposite / hypotenuse
The cos θ is equal to the ? side divided by the ? . - Answers- adjacent / hypotenuse
The tan θ is equal to the ? side divided by the ? side. - Answers- opposite / adjacent
What will happen if the time is not taken to properly measure and lay out a job before
trying to bend conduit? - Answers- I. Additional labor to re-bend
II. Conduit may need to be bent multiple times as a result of inaccurate measurements
IV. Increased amount of scrapped conduit
The only viable method to reduce the material cost itself is to reduce waste, and the
only practical way of doing that is to be skilled in measuring, calculating, and laying out
the conduit bends. - Answers- True
, What tool can be used to prevent an off-axis between bends in an offset (dog-legs)? -
Answers- No-dog level
A lightweight metallic raceway without threads is called ? in the National Electrical
Code. - Answers- Electrical Metallic Tubing
PVC is a form of what type of conduit? - Answers- rigid non-metallic conduit
Match the conduit/size with the appropriate protective cap. - Answers- 1/2" Rigid Metal
Conduit (RMC) → Black
3/4" Rigid Metal Conduit (RMC) → Red
1" Rigid Metal Conduit (RMC) → Blue
According to NEC Section ? , ? shall not be threaded. - Answers- 358.28(B) / EMT
Which types of conduit are typically threaded in order to couple them together or
connect them to boxes or fittings? - Answers- I. IMC
II. RMC
A "plumb 30" or a "plumb 45" bender will reliably produce an approximate 30°- or 45°-
bend when the conduit is horizontal and the handle is pulled up so that the handle is
vertical or plumb. - Answers- True
Note: There are too many variables to rely solely upon the position of the bender handle
to determine the angle of bend. Each bender should be checked initially to verify the
accuracy of the bender markings and the take-up value.
The recommended way to mark a conduit for bending is to place a short pencil or
marker marking where the bend will occur. - Answers- False
When fabricating a 90°-bend, the distance to the bending mark is equal to? - Answers-
The stub-up minus the take-up
Calculate the distance to the reference mark for a 12 3/4-inch stub-up length and match
it to the conduit size. - Answers- 1/2 " → 7 3/4"
3/4" → 6 3/4"
1" → 4 3/4"
1 1/4" → N/A
Choose the value that most closely equals the stub-up length needed for the 1/2-inch
EMT in the photo. Keep in mind that if the measurement is being taken to the side of the
box, instead of the inside of the connector, it will be necessary to subtract a slight
amount (1/16 to1/8 inch) to compensate for the ridge at the bottom of the connector. A
temporarily inserted conduit has been installed for a measurement. - Answers- Even
though it appears that the actual value required is 17 15/16", it is best to shorten the
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