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While conducting testing on the single phase transformer, one of the student tries to measure the resistance by putting an ammeter across one terminal of primary and other to secondary, the reading obtained will be
- a)infinite
- b)zero
- c)finite
- d)negative finite
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
While conducting testing on the single phase transformer, one of the s...
As the primary and secondary are physically isolated, the impedance will be infinite for not electrically connected circuit.
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While conducting testing on the single phase transformer, one of the s...
Measuring Resistance of Single Phase Transformer
When measuring the resistance of a single phase transformer, it is important to follow the correct procedure in order to obtain accurate readings. In this question, the student tries to measure the resistance by putting an ammeter across one terminal of primary and other to secondary. However, this method is incorrect and will not give a valid resistance reading.
Why the Reading is Infinite
The reason why the reading obtained in this scenario will be infinite is because a transformer is designed to work on alternating current (AC) only. When DC is applied to the transformer, it will not work as intended and will act as an open circuit. This means that the ammeter will not detect any current flowing through the transformer and will display an infinite resistance reading.
Correct Method for Measuring Resistance
To measure the resistance of a single phase transformer, the correct method is to use an ohmmeter or a multimeter. The transformer should be disconnected from the power source and the primary and secondary windings should be isolated from each other. The ohmmeter or multimeter should then be connected across the primary winding and the resistance reading should be noted. The same procedure should be repeated across the secondary winding.
Conclusion
In conclusion, when measuring the resistance of a single phase transformer, it is important to use the correct method in order to obtain accurate readings. Using an ammeter to measure the resistance by putting it across one terminal of primary and other to secondary will not give a valid reading as the transformer is designed to work on AC only. The correct method is to use an ohmmeter or multimeter and to disconnect the transformer from the power source and isolate the primary and secondary windings from each other.
When measuring the resistance of a single phase transformer, it is important to follow the correct procedure in order to obtain accurate readings. In this question, the student tries to measure the resistance by putting an ammeter across one terminal of primary and other to secondary. However, this method is incorrect and will not give a valid resistance reading.
Why the Reading is Infinite
The reason why the reading obtained in this scenario will be infinite is because a transformer is designed to work on alternating current (AC) only. When DC is applied to the transformer, it will not work as intended and will act as an open circuit. This means that the ammeter will not detect any current flowing through the transformer and will display an infinite resistance reading.
Correct Method for Measuring Resistance
To measure the resistance of a single phase transformer, the correct method is to use an ohmmeter or a multimeter. The transformer should be disconnected from the power source and the primary and secondary windings should be isolated from each other. The ohmmeter or multimeter should then be connected across the primary winding and the resistance reading should be noted. The same procedure should be repeated across the secondary winding.
Conclusion
In conclusion, when measuring the resistance of a single phase transformer, it is important to use the correct method in order to obtain accurate readings. Using an ammeter to measure the resistance by putting it across one terminal of primary and other to secondary will not give a valid reading as the transformer is designed to work on AC only. The correct method is to use an ohmmeter or multimeter and to disconnect the transformer from the power source and isolate the primary and secondary windings from each other.
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While conducting testing on the single phase transformer, one of the s...
Because each winding means primary winding and secondary winding are isolated or seperate from each other
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While conducting testing on the single phase transformer, one of the student tries to measure the resistance by putting an ammeter across one terminal of primary and other to secondary, the reading obtained will bea)infiniteb)zeroc)finited)negative finiteCorrect answer is option 'A'. Can you explain this answer?
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