MAGNETIC CIRCUIT QUIZ

The unit of magnetic flux is

Ampere-turn/weber

Ampere/metre

Weber

Henry

TRUE ANSWER : ?
YOUR ANSWER : ?

An air gap is usually inserted in magnetic circuits to

Increase m.m.f.

Increase the flux

Prevent saturation

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of reluctance is

Henry

1/Henry

Henry/meter

Meter/Henry

TRUE ANSWER : ?
YOUR ANSWER : ?

While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit?

E.M.F

Conductivity

Current density

Current

TRUE ANSWER : ?
YOUR ANSWER : ?

Conductivity is analogous to

Inductance

Resistivity

Permeability

Retentivity

TRUE ANSWER : ?
YOUR ANSWER : ?

Conductance is analogous to

Permeance

Inductance

Flux

Reluctance

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Conductivity

Resistivity

Resistance

Conductance

TRUE ANSWER : ?
YOUR ANSWER : ?

Those materials are well suited for making permanent magnets which have retentivity and coercivity.

High, low

Low, low

Low, high

High, high

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of rise of current through an inductive coil is maximum

After one time constant

At the start of the current flow

At 63.2% of its maximum steady value

Near the final maximum value of current

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 : ?

↑