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JOURNEYMAN LINEMAN EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM COMPLETE 130 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+$16.99
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JOURNEYMAN LINEMAN EXAM AND PRACTICE
EXAM NEWEST ACTUAL EXAM COMPLETE 130
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
trans position - ANSWERits . the process of moving one Phase to another side the Pole
Impedance the total opposition to current flow in an AC circuit . The letter symbol is Z
and it is measured in ohms . It is made up of - ANSWERd . resistance , inductive
reactance and capacitive reactance
The RMS voltage value of a line is 480 volts . This means that the voltage is 480 . -
ANSWER✓a . effective
... A copper atom has an atomic number of 29. This means there are 29 -
ANSWERprotons / electrons in the shells
What is the reason for grounding the center bushing on a - volt transformer
secondary ? - ANSWERobtain the 120v
What degree of phase shift occurs between a wye and a delta transformer connection ?
- ANSWER30 and 210 degrees
The line voltage is equal to the phase voltage in a? - ANSWERDelta circuit
An open - wye , open delta has a total KVA rating of 100 KVA . The actual KVA
available is? - ANSWER86.6%
A circuit uses vectors from head to tail .
a delta
b short
C. wyc
d . balanced open - ANSWERDelta
, An open - wye , open - wye bank must have the primary neutral - ANSWERGrounded or
tied
List four things that should always be checked on the transformer nameplates . -
ANSWERa . Voltage ratings
b . Impedence
C. Polarity
d . Taps
If two transformer leads are reversed the result will be : - ANSWERReversed rotation
Phase separation generated either wye or delta is - ANSWER120 degrees
Transformers rated to 8660 volts and below 200 KVA and below are - ANSWERAdditive
The ratio of turns between the primary windings and the secondary windings is called -
ANSWERTurns ratio
The voltage is stepped ??? . when the primary has more turns than the secondary . -
ANSWERDown
A transformer with a turns ratio of 30 to 1 is a step - ANSWERdown transformer
Transformers 100 KVA and above have how mamy bushings - ANSWER3
Transformers with one primary bushing must always be - ANSWERcase grounded .
The most important feature on any transformer is the - ANSWERname plate
One in the USA is generally wye or delta - ANSWERWye
Voltage is defined as what???___ The letter E , which stands for EMF represents
voltage in ohms law - ANSWERElectromotive force
What is resistance measured in and what is the symbol - ANSWEROhms, R
Power is measured in what - ANSWERWatts P
Current is measured in what - ANSWERAmps
A light bulb is rated at 120 volts and 60 watts , how many amps will flow through this
bulb ? - ANSWER.5 amps I=60/120
the opposition to current flow in an Circuit . It is represented by the letter -
ANSWERImpedence, Z
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