SOLUTION: A transformer has a primary voltage of 480 volts and a secondary voltage of 120 volts. If the primary windings have 700 turns, how many turns are in the secondary windings? (Voltag

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: A transformer has a primary voltage of 480 volts and a secondary voltage of 120 volts. If the primary windings have 700 turns, how many turns are in the secondary windings? (Voltag      Log On


   



Question 312218: A transformer has a primary voltage of 480 volts and a secondary voltage of 120 volts. If the primary windings have 700 turns, how many turns are in the secondary windings? (Voltage and number of turns are directly proportional.)
Found 2 solutions by nyc_function, Edwin McCravy:
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
Let t = number of turns in the secondary windings
480/120 = 700/t
Solve for t and you will have your answer.
HINT: Cross-multiply and then divide to find t.

Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
A transformer has a primary voltage of 480 volts and a secondary voltage of 120 volts. If the primary windings have 700 turns, how many turns are in the secondary windings? (Voltage and number of turns are directly proportional.)

V%5BS%5D%2FV%5BP%5D=N%5BS%5D%2FN%5BP%5D

120%2F480=N%5BS%5D%2F700

Cross multiply:

480N%5BS%5D=120%2A700

480N%5BS%5D=120%2A700

480N%5BS%5D=84000

N%5BS%5D=84000%2F480

N%5BS%5D=175

Edwin