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A step up transformer has transformation ratio of 3:2. What is the voltage in secondary if voltage in primary is 30 V
  • a)
    45 V
  • b)
    15 V
  • c)
    90 V
  • d)
    300 V
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A step up transformer has transformation ratio of 3:2. What is the vol...
Voltage of primary = 30V (Given)

Transformation ratio = 3:2 (Given)

The primary transformer will have less turns as compared to the secondary. Thus, ratio of number of turns -

primary : secondary - 3:2

Np/Ns = Vp/Vs

2/3 = 30/Vs

2Vs = 90

Vs = 90/2

Vs = 45

Thus, the voltage in secondary transformer is 45v.....
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Community Answer
A step up transformer has transformation ratio of 3:2. What is the vol...
Primary has less turns, Secondary has more turns. Therefore, the given ratio of no. of turns 3:2 is Secondary : Primary. Recall formula - Np/Ns = Vp/Vs ; 2/3 = 30/ Vs ; So calculating this we will get Vs = 45V. Hence, option A is correct.
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A step up transformer has transformation ratio of 3:2. What is the voltage in secondary if voltage in primary is 30 Va)45 Vb)15 Vc)90 Vd)300 VCorrect answer is option 'A'. Can you explain this answer?
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