MAGNETIC CIRCUIT QUIZ

If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be

Zero

Small

None of the listed here

Large

TRUE ANSWER : ?
YOUR ANSWER : ?

A material for good magnetic memory should have

High retentivity

Low retentivity

High permeability

Low hysteresis loss

TRUE ANSWER : ?
YOUR ANSWER : ?

Hysteresis loss least depends on

Volume of material

Frequency

Steinmetz’s coefficient of material

Ambient temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Conductance is analogous to

Permeance

Flux

Reluctance

Inductance

TRUE ANSWER : ?
YOUR ANSWER : ?

Conductivity is analogous to

Permeability

Resistivity

Retentivity

Inductance

TRUE ANSWER : ?
YOUR ANSWER : ?

Silicon steel is used in electrical machines because it has

Low hysteresis loss

Low retentivity

High coercivity

Low coercivity

TRUE ANSWER : ?
YOUR ANSWER : ?

Ferrites have high hysteresis

Ferrites have low permeability

None of the listed here

Ferrites have high resistance

Ferrites have high resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

Laminated cores, in electrical machines, are used to reduce

Hysteresis loss

All of the listed here

Eddy current loss

Copper loss

TRUE ANSWER : ?
YOUR ANSWER : ?

Permeability in a magnetic circuit corresponds to_________ in an electric circuit.

Resistance

Resistivity

Conductance

Conductivity

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of reluctance is

Henry/meter

1/Henry

Henry

Meter/Henry

TRUE ANSWER : ?
YOUR ANSWER : ?

↑