Exam (elaborations)
JOURNEYMAN LINEMAN(OIL BURNER) EXAM SOLVED #23.
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- Journeyman Oil burner
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- Journeyman Oil Burner
JOURNEYMAN LINEMAN(OIL BURNER) EXAM SOLVED #23.
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JOURNEYMAN LINEMAN(OIL BURNER) EXAM SOLVED #23What fahrenheit tempature would a transformer have to be 55% centigrade above
ambrient of 98* F? - correct answer 55x1.8=99 + 32 = 131*F
131 + 98= 229*
A conductor is pulled to what tension? - correct answer 50%
To dead end three 2/0 HD conductors which have a breaking strength of 5,927 lbs each
A. How many
B. What size
C. What lead should the down guys have? - correct answer A. 2
B. 3/8" steel
C. 1-1 leads
Pole steps should be spaced what distance apart? - correct answer 18"
At what angle does a lifting sling have the same weight stress as the load being lifted? -
correct answer 30*
At what angle is the weight stress reduced approximately 1/2 of the load being lifted? -
correct answer 60*
How do you tell how much pull will be needed to lift a known weight with a double to
double block and tackle? - correct answer Divide the weight by the number of running
lines over moveable sheaves.
1000/4=250 or 25% per line.
Can transformers of different polarity be parallel?
How do you test polarity? - correct answer Yes
H1. H2
/
VM
\
X1. X2
Make drawings of 3 single phase transformers connected delta wye. - correct answer
Draw
If a guy lead has a ratio of 1 to 1 on a 50 ft pole, what is the guy lead distance? - correct
answer 50 ft
A. Define load factor.
B. Define KVA
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