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A step up transformer operates on a 200 volt line and supplies to a load of 2 amp. The ratio of primary to secondary windings is 1 : 25. Determine the primary current?
  • a)
    8.8 amp
  • b)
    0.08 amp
  • c)
    12.5 amp
  • d)
    50 amp
Correct answer is option 'D'. Can you explain this answer?
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A step up transformer operates on a 200 volt line and supplies to a lo...
Given:

Input Power = Output Power
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A step up transformer operates on a 200 volt line and supplies to a lo...

Given data:
- Primary voltage (Vp) = 200 V
- Load current (Ip) = 2 A
- Ratio of primary to secondary windings (Np:Ns) = 1:25

Calculating secondary current:
- Since the transformer is ideal, power in the primary side is equal to power in the secondary side.
- Power = Voltage * Current
- Therefore, Vp * Ip = Vs * Is
- Is = (Vp * Ip) / Vs
- Is = (200 * 2) / 25
- Is = 16 A

Calculating primary current:
- The primary current (Ip) can be calculated using the formula:
- Np/Ns = Ip/Is
- 1/25 = Ip/16
- Ip = 16/25
- Ip = 0.64 * 25
- Ip = 16 A

Therefore, the primary current is 16 A, which corresponds to option D.
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A step up transformer operates on a 200 volt line and supplies to a load of 2 amp. The ratio of primary to secondary windings is 1 : 25. Determine the primary current?a)8.8 ampb)0.08 ampc)12.5 ampd)50 ampCorrect answer is option 'D'. Can you explain this answer?
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