Sifat dan Kinerja Material P5

Which type of magnetic material is characterized by strong magnetic alignment?

• Diamagnetic

• Paramagnetic

• Ferromagnetic

• Antiferromagnetic

What does the area within a hysteresis loop represent?

• Electrical resistivity

• Magnetic permeability

• Energy loss per cycle

• Thermal conductivity

Which magnetic property is lost when a material is heated above its Curie temperature?

• Electrical conductivity

• Magnetic susceptibility

• Ferromagnetism

• Diamagnetism

What kind of magnetic material is commonly used for transformer cores?

• Hard magnetic materials

• Soft magnetic materials

• Antiferromagnetic materials

• Superconductors

Which alloy is commonly used for transformer cores due to its magnetic properties?

• Copper-Nickel

• Iron-Silicon

• Aluminum-Cobalt

• Nickel-Titanium

What is the main factor determining the saturation magnetization of a material?

• Crystal structure

• Composition

• Temperature

• External magnetic field

Which material is known for its high-energy product and is used in strong permanent magnets?

• Iron

• SmCo5

• Copper

• Silicon

How are data bits represented on a Hard Disk Drive (HDD)?

• Magnetic orientation of particles

• Electrical pulses

• Chemical etching

• Optical marks

Which process is used to enhance the hysteresis characteristics of soft magnetic materials?

• Annealing

• Rapid cooling

• Powder metallurgy

• Heat treatment with a magnetic field

Which of the following is a property of soft magnetic materials?

• High coercivity

• High remanence

• Low coercivity

• High energy loss