Alternating CurrentMedium
Question
A 220 V input is supplied to a transformer. The output circuit draws a current of 2.0 amp at 440 volts. If the efficiency of the transformer is 80 %, the current drawn by the primary windings of the transformer is
Options
A.3.6 amp
B.2.8 amp
C.2.5 amp
D.5.0 amp
Solution
Here,
Input voltage, Vp = 220 V
Output voltage, Vs = 440 V
Input current, Ip = ?
output current, Is = 2A
Efficiency of the transformenr, η = 80%
Efficiency of the transformenr, η =
or Ip =
= 5 A
Input voltage, Vp = 220 V
Output voltage, Vs = 440 V
Input current, Ip = ?
output current, Is = 2A
Efficiency of the transformenr, η = 80%
Efficiency of the transformenr, η =
or Ip =
= 5 ACreate a free account to view solution
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