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If the reciprocal of transformation ratio of a transformer is 21. The ratio of current in the secondary to primary is:
- a)1/21
- b)11
- c)11/2
- d)21
Correct answer is option 'D'. Can you explain this answer?
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If the reciprocal of transformation ratio of a transformer is 21. The ...
In a transformer, the transformation ratio is given by
reciprocal of transformation ratio of a transformer is 21
The ratio of current in the secondary to primary
reciprocal of transformation ratio of a transformer is 21
The ratio of current in the secondary to primary
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If the reciprocal of transformation ratio of a transformer is 21. The ...
Reciprocal of Transformation Ratio:
The reciprocal of the transformation ratio of a transformer is the inverse of the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. It is denoted by 1/K, where K represents the transformation ratio.
If we assume the transformation ratio to be K, then the reciprocal of the transformation ratio can be expressed as:
1/K
Given that the reciprocal of the transformation ratio is 21, we can write:
1/K = 21
Finding the Current Ratio:
The current ratio between the secondary and primary windings of a transformer can be determined by the formula:
Secondary Current / Primary Current = Secondary Voltage / Primary Voltage
Since the voltage ratio is the inverse of the transformation ratio (K), we can write:
Secondary Voltage / Primary Voltage = 1/K
Substituting the given value of the reciprocal of the transformation ratio (1/K = 21), we have:
Secondary Voltage / Primary Voltage = 21
Now, we know that the current is directly proportional to the voltage in a transformer. Therefore, if the voltage ratio is 21, the current ratio will also be 21.
Therefore, the ratio of the current in the secondary winding to the primary winding is 21:1.
Answer:
The correct answer is option D) 21.
The reciprocal of the transformation ratio of a transformer is the inverse of the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. It is denoted by 1/K, where K represents the transformation ratio.
If we assume the transformation ratio to be K, then the reciprocal of the transformation ratio can be expressed as:
1/K
Given that the reciprocal of the transformation ratio is 21, we can write:
1/K = 21
Finding the Current Ratio:
The current ratio between the secondary and primary windings of a transformer can be determined by the formula:
Secondary Current / Primary Current = Secondary Voltage / Primary Voltage
Since the voltage ratio is the inverse of the transformation ratio (K), we can write:
Secondary Voltage / Primary Voltage = 1/K
Substituting the given value of the reciprocal of the transformation ratio (1/K = 21), we have:
Secondary Voltage / Primary Voltage = 21
Now, we know that the current is directly proportional to the voltage in a transformer. Therefore, if the voltage ratio is 21, the current ratio will also be 21.
Therefore, the ratio of the current in the secondary winding to the primary winding is 21:1.
Answer:
The correct answer is option D) 21.
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If the reciprocal of transformation ratio of a transformer is 21. The ratio of current in the secondary to primary is:a)1/21b)11c)11/2d)21Correct answer is option 'D'. Can you explain this answer?
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