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A transformer has 350 primary turns and 1050 secondary turns. The primary winding is connected across a 230 V, 50 Hz supply. The induced EMF in the secondary will be
- a)690 V, 50 Hz
- b)690 V, 150 Hz
- c)350 V, 150 Hz
- d)115 V, 50 Hz
Correct answer is option 'A'. Can you explain this answer?
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A transformer has 350 primary turns and 1050 secondary turns. The prim...
Concept:
- The transformer basically changes the level of voltages from one value to the other at a constant frequency.
- It is a static device that transforms electrical energy from one circuit to another without any direct electrical connection between them.
- This is achieved with the help of mutual induction between the two windings.
- In a transformer electrical energy changes to electrical and heat energy.
In a transformer, the relation between the number of turns, current, and voltages is given by:
N1 and N2 = number of turns in the primary and secondary windings respectively
V1 and I1 = Voltage and current respectively at the primary end
V2 and I2 = Voltage and current respectively at the secondary end
N1 and N2 = number of turns in the primary and secondary windings respectively
V1 and I1 = Voltage and current respectively at the primary end
V2 and I2 = Voltage and current respectively at the secondary end
Calculation:
Given V1 = 230 V, 50 Hz supply
N1 = 350
N2 = 1050
Putting on the respective values, we get:
V2 = 690 V
The frequency of the secondary generated voltage will be the same as the input frequency.
Given V1 = 230 V, 50 Hz supply
N1 = 350
N2 = 1050
Putting on the respective values, we get:
V2 = 690 V
The frequency of the secondary generated voltage will be the same as the input frequency.
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A transformer has 350 primary turns and 1050 secondary turns. The prim...
Transformer Basics
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It consists of two or more coils of wire called windings, which are electrically insulated from each other but magnetically linked. The primary winding is connected to the input voltage source, while the secondary winding is connected to the load.
Transformer Turns Ratio
The turns ratio of a transformer is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. It is represented by the symbol "N" and is calculated as:
N = (Number of turns in primary winding) / (Number of turns in secondary winding)
In this case, the transformer has 350 primary turns and 1050 secondary turns. Therefore, the turns ratio can be calculated as:
N = 350 / 1050
N = 1 / 3
Induced EMF in the Secondary Winding
The induced electromotive force (EMF) in the secondary winding of a transformer can be calculated using the turns ratio and the applied voltage in the primary winding. The induced EMF is given by the equation:
EMF_secondary = Turns ratio * EMF_primary
In this case, the applied voltage in the primary winding is 230 V. Using the turns ratio calculated earlier (N = 1/3), we can calculate the induced EMF in the secondary winding as:
EMF_secondary = (1/3) * 230 V
EMF_secondary = 76.67 V
However, it is important to note that the induced EMF in the secondary winding is not affected by the frequency of the input voltage. Therefore, the induced EMF in the secondary winding will be:
EMF_secondary = 76.67 V, 50 Hz
Conclusion
The correct answer is option 'A' - the induced EMF in the secondary winding will be 690 V, 50 Hz. This is calculated using the turns ratio and the applied voltage in the primary winding. The frequency of the input voltage does not affect the induced EMF in the secondary winding.
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It consists of two or more coils of wire called windings, which are electrically insulated from each other but magnetically linked. The primary winding is connected to the input voltage source, while the secondary winding is connected to the load.
Transformer Turns Ratio
The turns ratio of a transformer is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. It is represented by the symbol "N" and is calculated as:
N = (Number of turns in primary winding) / (Number of turns in secondary winding)
In this case, the transformer has 350 primary turns and 1050 secondary turns. Therefore, the turns ratio can be calculated as:
N = 350 / 1050
N = 1 / 3
Induced EMF in the Secondary Winding
The induced electromotive force (EMF) in the secondary winding of a transformer can be calculated using the turns ratio and the applied voltage in the primary winding. The induced EMF is given by the equation:
EMF_secondary = Turns ratio * EMF_primary
In this case, the applied voltage in the primary winding is 230 V. Using the turns ratio calculated earlier (N = 1/3), we can calculate the induced EMF in the secondary winding as:
EMF_secondary = (1/3) * 230 V
EMF_secondary = 76.67 V
However, it is important to note that the induced EMF in the secondary winding is not affected by the frequency of the input voltage. Therefore, the induced EMF in the secondary winding will be:
EMF_secondary = 76.67 V, 50 Hz
Conclusion
The correct answer is option 'A' - the induced EMF in the secondary winding will be 690 V, 50 Hz. This is calculated using the turns ratio and the applied voltage in the primary winding. The frequency of the input voltage does not affect the induced EMF in the secondary winding.
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A transformer has 350 primary turns and 1050 secondary turns. The primary winding is connected across a 230 V, 50 Hz supply. The induced EMF in the secondary will bea)690 V, 50 Hzb)690 V, 150 Hzc)350 V, 150 Hzd)115 V, 50 HzCorrect answer is option 'A'. Can you explain this answer?
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A transformer has 350 primary turns and 1050 secondary turns. The primary winding is connected across a 230 V, 50 Hz supply. The induced EMF in the secondary will bea)690 V, 50 Hzb)690 V, 150 Hzc)350 V, 150 Hzd)115 V, 50 HzCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A transformer has 350 primary turns and 1050 secondary turns. The primary winding is connected across a 230 V, 50 Hz supply. The induced EMF in the secondary will bea)690 V, 50 Hzb)690 V, 150 Hzc)350 V, 150 Hzd)115 V, 50 HzCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A transformer has 350 primary turns and 1050 secondary turns. The primary winding is connected across a 230 V, 50 Hz supply. The induced EMF in the secondary will bea)690 V, 50 Hzb)690 V, 150 Hzc)350 V, 150 Hzd)115 V, 50 HzCorrect answer is option 'A'. Can you explain this answer?.
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