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The value of flux involved m the e.m.f. equation of a transformer is
- a)average value
- b)r.m.s. value
- c)maximum value
- d)instantaneous value
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The value of flux involved m the e.m.f. equation of a transformer isa)...
The value of flux involved in the e.m.f. equation of a transformer is the maximum value. Here's why:
Explanation:
- The e.m.f. equation of a transformer is given by E = 4.44fφN, where E is the induced e.m.f., f is the frequency of the alternating current, φ is the maximum value of the flux, and N is the number of turns in the winding.
- The maximum value of the flux is the peak value of the sinusoidal waveform of the flux. This is because the e.m.f. induced in the winding of the transformer is proportional to the rate of change of flux, and the maximum rate of change occurs when the flux is changing from its maximum to its minimum value.
- The average value of the flux is zero, since the flux waveform is symmetrical about the zero axis.
- The r.m.s. value of the flux is given by the square root of the mean square value of the waveform, which is √(1/2φ²). This value is not relevant to the e.m.f. equation of a transformer.
- The instantaneous value of the flux is constantly changing, and is not a useful value to consider for the e.m.f. equation of a transformer.
Conclusion:
Therefore, the value of flux involved in the e.m.f. equation of a transformer is the maximum value.
Explanation:
- The e.m.f. equation of a transformer is given by E = 4.44fφN, where E is the induced e.m.f., f is the frequency of the alternating current, φ is the maximum value of the flux, and N is the number of turns in the winding.
- The maximum value of the flux is the peak value of the sinusoidal waveform of the flux. This is because the e.m.f. induced in the winding of the transformer is proportional to the rate of change of flux, and the maximum rate of change occurs when the flux is changing from its maximum to its minimum value.
- The average value of the flux is zero, since the flux waveform is symmetrical about the zero axis.
- The r.m.s. value of the flux is given by the square root of the mean square value of the waveform, which is √(1/2φ²). This value is not relevant to the e.m.f. equation of a transformer.
- The instantaneous value of the flux is constantly changing, and is not a useful value to consider for the e.m.f. equation of a transformer.
Conclusion:
Therefore, the value of flux involved in the e.m.f. equation of a transformer is the maximum value.
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The value of flux involved m the e.m.f. equation of a transformer isa)...
Answer is C
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