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After using for some time, big transformers get heated up. This is due to the fact that
1. Current produces heat in transformers
2. Hysteresis loss occurs in transformers
3. Liquid used for cooling gets heated
1. Current produces heat in transformers
2. Hysteresis loss occurs in transformers
3. Liquid used for cooling gets heated
Select the correct answer using the code given below.
- a)1 only
- b)2 and 3 only
- c)1 and 2 only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
After using for some time, big transformers get heated up. This is due...
Whenever Power Conversion occurs in any device or machine then there is an opposition to the energy conversion which is converted to power loss or the power loss may occurs during transmission of power either in mechanical or electrical.
- In a transformer energy is converted to magnetic field and back to electrical energy, thus there exists magnetic losses i.e. hysteresis loss and Eddy current loss and electrical loss i.e. Cooper loss.
- These energy losses are dissipated in the form of heat thus generating heat in transformer.
Most Upvoted Answer
After using for some time, big transformers get heated up. This is due...
Explanation:
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction. They consist of a primary coil and a secondary coil wound around a common magnetic core.
1. Current produces heat in transformers:
When current flows through a conductor, it encounters resistance. This resistance causes energy to be converted into heat. In transformers, the primary and secondary coils have resistance due to the wire used, and as current flows through these coils, heat is produced. This heat is dissipated into the surroundings, causing the transformer to heat up.
2. Hysteresis loss occurs in transformers:
Hysteresis loss is the energy loss that occurs when the magnetic domains in the core material of the transformer are repeatedly magnetized and demagnetized. This loss is caused by the inherent magnetic properties of the core material, and it results in the generation of heat. The heat produced due to hysteresis loss contributes to the heating up of the transformer.
3. Liquid used for cooling gets heated:
Large transformers are often immersed in a liquid coolant to help dissipate the heat generated. The liquid coolant absorbs the heat from the transformer and carries it away, preventing excessive heating. However, as the transformer operates and gets heated up, the liquid coolant itself absorbs heat and gets heated. This can reduce the efficiency of the cooling process and contribute to the overall heating of the transformer.
Therefore, all three factors mentioned in the options contribute to the heating up of big transformers. The current flowing through the coils produces heat, the hysteresis loss in the core material generates heat, and the liquid coolant used for cooling gets heated up, further increasing the overall temperature of the transformer.
Hence, the correct answer is option C) 1 and 2 only.
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction. They consist of a primary coil and a secondary coil wound around a common magnetic core.
1. Current produces heat in transformers:
When current flows through a conductor, it encounters resistance. This resistance causes energy to be converted into heat. In transformers, the primary and secondary coils have resistance due to the wire used, and as current flows through these coils, heat is produced. This heat is dissipated into the surroundings, causing the transformer to heat up.
2. Hysteresis loss occurs in transformers:
Hysteresis loss is the energy loss that occurs when the magnetic domains in the core material of the transformer are repeatedly magnetized and demagnetized. This loss is caused by the inherent magnetic properties of the core material, and it results in the generation of heat. The heat produced due to hysteresis loss contributes to the heating up of the transformer.
3. Liquid used for cooling gets heated:
Large transformers are often immersed in a liquid coolant to help dissipate the heat generated. The liquid coolant absorbs the heat from the transformer and carries it away, preventing excessive heating. However, as the transformer operates and gets heated up, the liquid coolant itself absorbs heat and gets heated. This can reduce the efficiency of the cooling process and contribute to the overall heating of the transformer.
Therefore, all three factors mentioned in the options contribute to the heating up of big transformers. The current flowing through the coils produces heat, the hysteresis loss in the core material generates heat, and the liquid coolant used for cooling gets heated up, further increasing the overall temperature of the transformer.
Hence, the correct answer is option C) 1 and 2 only.
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After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for After using for some time, big transformers get heated up. This is due to the fact that1. Current produces heat in transformers2. Hysteresis loss occurs in transformers3. Liquid used for cooling gets heatedSelect the correct answer using the code given below.a)1 onlyb)2 and 3 onlyc)1 and 2 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
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