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A coupling magnetic field inside a rotating machine or static machine like transformers must involve with
I. electrical system to extract energy from electrical system.
II. mechanical system to extract energy from electrical system.
- a)Only I is true
- b)Only II is true
- c)I and II are true
- d)I and II are false
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A coupling magnetic field inside a rotating machine or static machine ...
The energy conversion which involves both electrical as well as mechanical systems must have mutual field.
Most Upvoted Answer
A coupling magnetic field inside a rotating machine or static machine ...
**Explanation:**
In a rotating machine or static machine like transformers, the coupling magnetic field does not involve with the mechanical system to extract energy from the electrical system. Instead, it is the other way around - the mechanical system (rotor or core) interacts with the magnetic field to generate electrical energy.
**I. Electrical system to extract energy from electrical system:**
- This statement is incorrect because the electrical system does not extract energy from itself. Instead, it provides the necessary input electrical energy to the machine.
- In a transformer, the primary winding is connected to an electrical source, which supplies electrical energy. The magnetic field created by the primary winding induces a voltage in the secondary winding, allowing energy to be transferred from the primary side to the secondary side.
- In a rotating machine like an electric generator, mechanical energy is converted into electrical energy. The rotor (mechanical system) interacts with the magnetic field created by the stator windings (electrical system), inducing a voltage and generating electrical energy.
**II. Mechanical system to extract energy from electrical system:**
- This statement is true. In a rotating machine or static machine like transformers, the mechanical system does not extract energy from the electrical system but rather interacts with the magnetic field to convert mechanical energy into electrical energy.
- In a rotating machine like an electric generator, the mechanical system (rotor) rotates within the magnetic field created by the stator windings (electrical system). This rotation induces a voltage and generates electrical energy.
- In a transformer, the magnetic field created by the primary winding induces a voltage in the secondary winding, allowing energy to be transferred from the primary side to the secondary side. However, the mechanical system does not extract energy from this electrical system.
Therefore, only statement II is true, and the correct answer is option B.
In a rotating machine or static machine like transformers, the coupling magnetic field does not involve with the mechanical system to extract energy from the electrical system. Instead, it is the other way around - the mechanical system (rotor or core) interacts with the magnetic field to generate electrical energy.
**I. Electrical system to extract energy from electrical system:**
- This statement is incorrect because the electrical system does not extract energy from itself. Instead, it provides the necessary input electrical energy to the machine.
- In a transformer, the primary winding is connected to an electrical source, which supplies electrical energy. The magnetic field created by the primary winding induces a voltage in the secondary winding, allowing energy to be transferred from the primary side to the secondary side.
- In a rotating machine like an electric generator, mechanical energy is converted into electrical energy. The rotor (mechanical system) interacts with the magnetic field created by the stator windings (electrical system), inducing a voltage and generating electrical energy.
**II. Mechanical system to extract energy from electrical system:**
- This statement is true. In a rotating machine or static machine like transformers, the mechanical system does not extract energy from the electrical system but rather interacts with the magnetic field to convert mechanical energy into electrical energy.
- In a rotating machine like an electric generator, the mechanical system (rotor) rotates within the magnetic field created by the stator windings (electrical system). This rotation induces a voltage and generates electrical energy.
- In a transformer, the magnetic field created by the primary winding induces a voltage in the secondary winding, allowing energy to be transferred from the primary side to the secondary side. However, the mechanical system does not extract energy from this electrical system.
Therefore, only statement II is true, and the correct answer is option B.
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Community Answer
A coupling magnetic field inside a rotating machine or static machine ...
The energy convertion is which involves both electrical as well as mechanical system must have mutual field
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A coupling magnetic field inside a rotating machine or static machine like transformers must involve withI. electrical system to extract energy from electrical system.II. mechanical system to extract energy from electrical system.a)Only I is trueb)Only II is truec)I and II are trued)I and II are falseCorrect answer is option 'B'. Can you explain this answer?
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