Electrical Engineering XYZ MCQs
Hysteresis loss depends on:
- f²
- f1.6
- f
- f³
Correct answer: 2. f1.6
Explanation: Hysteresis loss in a magnetic material depends on the frequency of the alternating magnetic field applied to it. Hysteresis loss occurs due to the repeated magnetization and demagnetization of the material, causing energy losses in the form of heat. The relationship between hysteresis loss and frequency (f) is typically represented by a power law. The correct answer to the multiple-choice question would be:
Hysteresis loss depends on: f1.6
The correct answer is “f^1.6”. Hysteresis loss is generally proportional to a power of the frequency, rather than simply being linearly or cubically dependent on the frequency.
The specific exponent of 1.6 represents the empirical relationship observed between hysteresis loss and frequency in certain materials and under certain conditions. This exponent may vary depending on the material and the specifics of the magnetic field.
It’s worth noting that the relationship between hysteresis loss and frequency is not straightforward and can be influenced by various factors such as the material properties, magnetic field strength, and temperature. However, in many practical cases, the relationship is approximately represented by a power law, with the exponent typically falling in the range of 1 to 2.