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Magnetic Circuit

Magnetic Circuit
Conductance is analogous to

Inductance
Flux
Reluctance
Permeance

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Magnetic Circuit
Reciprocal of reluctance is

Permeability
Reluctivity
Permeance
Susceptibility

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Magnetic Circuit
When both the inductance and resistance of a coil are doubled the value of

Time constant remains unchanged
Time constant is halved
Initial rate of rise of current is doubled
Final steady current is doubled

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

Conductivity
Resistance
Conductance
Resistivity

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Magnetic Circuit
Relative permeability of vacuum is

1
3
5
6

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Magnetic Circuit
Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it

Leads to their increased weight
Lowers their power efficiency
Increases their cost of manufacture
Produces fringing

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