True or False: An aircraft part may be demagnetized by subjecting it to a magnetizing force from direct current that is alternately reversed in direction and gradually reduced in strength.

True or False: An aircraft part may be demagnetized by subjecting it to a magnetizing force from direct current that is alternately reversed in direction and gradually reduced in strength.

• A. True.
• B. False.
• C. Only with high voltage.
• D. False, alternating current is necessary.

Answer: (A)

The statement is true because demagnetizing a material, specifically ferromagnetic materials used in aircraft parts, can effectively be achieved by applying a magnetizing force that is alternately reversed and gradually reduced. This method involves using direct current (DC) that is varied in direction, creating an alternating effect. As the current's strength is decreased, it reduces the alignment of magnetic domains within the material, allowing them to return to a non-magnetized state. For instance, if an aircraft part has become magnetized and is exhibiting unwanted magnetic properties, subjecting it to a decreasing alternating current field helps disrupt the existing magnetic domains which align favorably. This technique is a practical application in demagnetization processes, ensuring that sensitive components do not interfere with aircraft operations. The other choices involve misconceptions about either the needs for specific types of current or voltages that are not pertinent to the demagnetization of aircraft components under such conditions.

The statement is true because demagnetizing a material, specifically ferromagnetic materials used in aircraft parts, can effectively be achieved by applying a magnetizing force that is alternately reversed and gradually reduced. This method involves using direct current (DC) that is varied in direction, creating an alternating effect. As the current's strength is decreased, it reduces the alignment of magnetic domains within the material, allowing them to return to a non-magnetized state.

For instance, if an aircraft part has become magnetized and is exhibiting unwanted magnetic properties, subjecting it to a decreasing alternating current field helps disrupt the existing magnetic domains which align favorably. This technique is a practical application in demagnetization processes, ensuring that sensitive components do not interfere with aircraft operations.

The other choices involve misconceptions about either the needs for specific types of current or voltages that are not pertinent to the demagnetization of aircraft components under such conditions.