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Magnetic Circuit

Magnetic Circuit
Reciprocal of reluctance is

Reluctivity
Permeance
Permeability
Susceptibility

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Magnetic Circuit
Energy stored by a coil is doubled when its current is increased by percent.

47.5
42.5
44.6
41.4

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Magnetic Circuit
Conductance is analogous to

Inductance
Reluctance
Permeance
Flux

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Magnetic Circuit
An air gap is usually inserted in magnetic circuits to

Prevent saturation
Increase m.m.f.
None of the listed here
Increase the flux

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Magnetic Circuit
Relative permeability of vacuum is

6
1
3
5

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

High, high
Low, high
High, low
Low, low

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